Series
Series 51
Versatile. Attractive and compact.
51
https://eao.com/
Information about the Series
Key advantages
§Compact construction
§Various conguration options
§Reliable and proven
§Timeless and modern design
§Raised or ush mounting
§Low back panel depth (Stop Switch)
Typical application areas
§Food and beverages
§Special vehicles
§Buildings services and automation
§Public transportation
§Medical engineering
Functions
§Pushbutton
§Illuminated pushbutton
§Selector switch
§Keylock switch
§Indicator
§Stop switch
Design
§Flush
§Raised
IP front protection
§IP65
Raitings
§42 VAC (100 mA)
§250 VAC (5 A)
Mounting cut-outs
§Ø 16.2 mm
§Ø 22.3 mm
§21.2 mm x 21.2 mm
§21.2 mm x 27.2 mm
Terminal
§Soldering terminal
§Plug-in terminal
§Soldering/plug-in terminal
§PCB (with PCB plug-in base)
Lens Material
§Aluminium
§Plastic
Markings
§Engraving
§Laser marking
§Hot stamping
§Film insert/marking plate
§Pad printing
§Screen print
Approvals
§CB (IEC 61058)
§CSA
§CQC
§ENEC (EN 61058)
§DNV GL (vormals Germanischer Lloyd)
§UL
Conformities
§CE
§2014/30/EU (EMC)
§2014/35/EU (LVD)
§2011/65/EU (RoHS)
§2006/42/EU (MD)
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Flush design
Pushbutton round
Illuminated pushbutton square
Illuminated pushbutton rectangular
Illuminated pushbutton round
Selectorswitch2positionssquare
Selectorswitch2positionsround
Keylockswitch2 positions square
Keylockswitch2 positions rectangular
Keylockswitch2 positions round
Keylockswitch3 positions square
Keylockswitch3 positions rectangular
Keylockswitch3 positions round
Indicator square
Indicator rectangular
Indicator round
Raised design
Illuminated pushbutton square
Illuminated pushbutton rectangular
Illuminated pushbutton round
Mushroom-head pushbutton
Selectorswitch 2positions, round
Selectorswitch 3positions, round
Keylockswitch2positions square
Keylockswitch2positions rectangular
Keylockswitch2positions round
Keylockswitch3positions square
Keylockswitch3positions rectangular
Keylockswitch3positions round
Indicator square
Indicator rectangular
Indicator round
Stop switch
Components
Accessories
Technical data
Marking
Application guidelines
Index
574
577
580
583
586
589
592
595
598
601
603
605
607
609
611
613
616
619
622
624
628
630
633
636
639
641
643
645
647
649
651
653
662
669
674
675
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51
56
57
61
70
71
82
84
92
96
Pushbutton round, IP65
Equipment consisting of (schematic overview)
Lens Page 653
Actuator
Front bezel set Page 658
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension Ø 25 mm
Switching action Contacts Terminal Switching system Part No.
Wiring
diagram
Com-
ponent
Layout
Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 51-151.022F 247 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-151.0252F 247 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-152.0252F 251 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-153.0252F 253 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-154.0252F 255 27
Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 51-281.022F 250 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-281.0252F 250 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-282.0252F 252 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-283.0252F 254 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-284.0252F 256 27
Momentary 2 NO Universal terminal Low-level element 51-451.036F 245 27
2 NC Universal terminal Low-level element 51-452.036F 243 27
1 NC / 1 NO Universal terminal Low-level element 51-453.036F 239 27
1 NO Universal terminal Low-level element 51-455.036F 241 27
1 NC Universal terminal Low-level element 51-456.036F 237 27
Maintained 2 NO Universal terminal Low-level element 51-481.036F 246 27
2 NC Universal terminal Low-level element 51-482.036F 244 27
1 NC / 1 NO Universal terminal Low-level element 51-483.036F 240 27
1 NO Universal terminal Low-level element 51-485.036F 242 27
1 NC Universal terminal Low-level element 51-486.036F 238 27
Contacts: NC = Normally closed, NO = Normally open
Flush design
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92
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44
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36.5 ... 59
2
1.5 ... 4
C
B
A
L
NJO
NJO
±
Wiring diagrams
Wiring diagram 237 Wiring diagram 238 Wiring diagram 239 Wiring diagram 240 Wiring diagram 241 Wiring diagram 242 Wiring diagram 243
Wiring diagram 244 Wiring diagram 245 Wiring diagram 246 Wiring diagram 247 Wiring diagram 250 Wiring diagram 251
Wiring diagram 252 Wiring diagram 253 Wiring diagram 254
Wiring diagram 255 Wiring diagram 256
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1
2
1
2
13
4
2
13
4
2
1
2
1
2
1
2
3
4
1
2
3
4
13
4
2
13
4
2
31
24
I
31
24
I
31
24
I
31
24
II
31
2
4
I
31
2
4
II
31
2
4
I
31
2
4
II
31
2
4
III
31
2
4
I
31
2
4
II
31
2
4
III
31
24
I
31
24
II
31
24
III
31
24
IV
31
24
I
31
24
II
31
24
III
31
24
IV
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Flush design
www.eao.com
On our website you can download technical data, assembly instructions,
catalogs, brochures and much more.
EAO Downloads.
www.eao.com/downloads
EAO creates possibilities. Since 1947.
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10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Illuminated pushbutton square, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Front bezel set Page 658
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension 24 mm x 24 mm
Switching action Contacts Terminal Switching system Part No.
Wiring
diagram
Com-
ponent
Layout
Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 51-151.022F 18 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-151.0252F 18 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-152.0252F 24 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-153.0252F 26 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-154.0252F 28 27
Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 51-281.022F 19 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-281.0252F 19 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-282.0252F 25 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-283.0252F 27 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-284.0252F 29 27
Momentary 2 NO Universal terminal Low-level element 51-451.036F 11 27
2 NC Universal terminal Low-level element 51-452.036F 30 27
1 NC / 1 NO Universal terminal Low-level element 51-453.036F 7 27
1 NO Universal terminal Low-level element 51-455.036F 9 27
1 NC Universal terminal Low-level element 51-456.036F 11 27
Maintained 2 NO Universal terminal Low-level element 51-481.036F 12 27
2 NC Universal terminal Low-level element 51-482.036F 31 27
1 NC / 1 NO Universal terminal Low-level element 51-483.036F 8 27
1 NO Universal terminal Low-level element 51-485.036F 10 27
1 NC Universal terminal Low-level element 51-486.036F 6 27
Contacts: NC = Normally closed, NO = Normally open
Flush design
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44
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36.5 ... 59
2
1.5 ... 4
C
B
A
L
NJO
NJO
3NBY
Wiring diagrams
Flush design
Wiring diagram 6 Wiring diagram 7 Wiring diagram 8 Wiring diagram 9 Wiring diagram 10 Wiring diagram 11
Wiring diagram 12 Wiring diagram 18 Wiring diagram 19 Wiring diagram 24
Wiring diagram 26 Wiring diagram 27
Wiring diagram 28 Wiring diagram 29
Wiring diagram 30 Wiring diagram 31 Wiring diagram 252
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1b+
2
a-
13b+
4
2a-
13b+
4
2a-
1b+
2a-
1b+
2a-
13b+
4
2a-
13b+
4
2a-
31b+
24a-
I
31 x2+
24 x1-
I
31 x2+
24
x1-
I
31
24
II
31 x2+
2
4 x1-
I
31
2
4
II
31
2
4
III
31 x2+
2
4 x1-
I
31
2
4
II
31
2
4
III
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
1b+
2
3
4a-
1b+
2
3
4a-
31
24
I
31
24
II
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Flush design
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96
10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Illuminated pushbutton rectangular, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Front bezel set Page 658
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension 30 mm x 24 mm
Switching action Contacts Terminal Switching system Part No.
Wiring
diagram
Com-
ponent
Layout
Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 51-151.022F 18 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-151.0252F 18 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-152.0252F 24 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-153.0252F 26 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-154.0252F 28 27
Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 51-281.022F 19 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-281.0252F 19 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-282.0252F 25 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-283.0252F 27 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-284.0252F 29 27
Momentary 2 NO Universal terminal Low-level element 51-451.036F 11 27
2 NC Universal terminal Low-level element 51-452.036F 30 27
1 NC / 1 NO Universal terminal Low-level element 51-453.036F 7 27
1 NO Universal terminal Low-level element 51-455.036F 9 27
1 NC Universal terminal Low-level element 51-456.036F 11 27
Maintained 2 NO Universal terminal Low-level element 51-481.036F 12 27
2 NC Universal terminal Low-level element 51-482.036F 31 27
1 NC / 1 NO Universal terminal Low-level element 51-483.036F 8 27
1 NO Universal terminal Low-level element 51-485.036F 10 27
1 NC Universal terminal Low-level element 51-486.036F 6 27
Contacts: NC = Normally closed, NO = Normally open
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44
41 3
36.5 ... 59
2
1.5 ... 4
C
B
A
L
NJO
NJO
3 NBY
Wiring diagrams
Flush design
Wiring diagram 6 Wiring diagram 7 Wiring diagram 8 Wiring diagram 9 Wiring diagram 10 Wiring diagram 11
Wiring diagram 12 Wiring diagram 18 Wiring diagram 19 Wiring diagram 24
Wiring diagram 26 Wiring diagram 27
Wiring diagram 28 Wiring diagram 29
Wiring diagram 30 Wiring diagram 31 Wiring diagram 252
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1b+
2
a-
13b+
4
2a-
13b+
4
2a-
1b+
2a-
1b+
2a-
13b+
4
2a-
13b+
4
2a-
31b+
24a-
I
31 x2+
24 x1-
I
31 x2+
24 x1-
I
31
24
II
31 x2+
2
4 x1-
I
31
2
4
II
31
2
4
III
31 x2+
2
4 x1-
I
31
2
4
II
31
2
4
III
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
1b+
2
3
4a-
1b+
2
3
4a-
31
24
I
31
24
II
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
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96
10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Illuminated pushbutton round, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Front bezel set Page 658
Anti-twistring Page 659
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension Ø 25 mm
Switching action Contacts Terminal Switching system Part No.
Wiring
diagram
Com-
ponent
Layout
Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 51-151.022F 18 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-151.0252F 18 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-152.0252F 24 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-153.0252F 26 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-154.0252F 28 27
Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 51-281.022F 19 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-281.0252F 19 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-282.0252F 25 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-283.0252F 27 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-284.0252F 29 27
Momentary 2 NO Universal terminal Low-level element 51-451.036F 11 27
2 NC Universal terminal Low-level element 51-452.036F 30 27
1 NC / 1 NO Universal terminal Low-level element 51-453.036F 7 27
1 NO Universal terminal Low-level element 51-455.036F 9 27
1 NC Universal terminal Low-level element 51-456.036F 11 27
Maintained 2 NO Universal terminal Low-level element 51-481.036F 12 27
2 NC Universal terminal Low-level element 51-482.036F 31 27
1 NC / 1 NO Universal terminal Low-level element 51-483.036F 8 27
1 NO Universal terminal Low-level element 51-485.036F 10 27
1 NC Universal terminal Low-level element 51-486.036F 6 27
Contacts: NC = Normally closed, NO = Normally open
Flush design
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96
44
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36.5 ... 59
2
1.5 ... 4
C
B
A
L
NJO
NJO
±
Wiring diagrams
Flush design
Wiring diagram 6 Wiring diagram 7 Wiring diagram 8 Wiring diagram 9 Wiring diagram 10 Wiring diagram 11
Wiring diagram 12 Wiring diagram 18 Wiring diagram 19 Wiring diagram 24
Wiring diagram 26 Wiring diagram 27
Wiring diagram 28 Wiring diagram 29
Wiring diagram 30 Wiring diagram 31 Wiring diagram 252
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1b+
2
a-
13b+
4
2a-
13b+
4
2a-
1b+
2a-
1b+
2a-
13b+
4
2a-
13b+
4
2a-
31b+
24a-
I
31 x2+
24 x1-
I
31 x2+
24
x1-
I
31
24
II
31 x2+
2
4 x1-
I
31
2
4
II
31
2
4
III
31 x2+
2
4 x1-
I
31
2
4
II
31
2
4
III
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
1b+
2
3
4a-
1b+
2
3
4a-
31
24
I
31
24
II
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Flush design
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10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Selectorswitch2positionssquare, IP65
Equipment consisting of (schematic overview)
Lever Page 657
LED Page 660
Actuator
Front bezel set Page 658
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Solder terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Illuminative
Actuator, Front dimension 24 mm x 24 mm
Switching action Terminal Switching system Contacts Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest - Momentary Plug-interminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.022 272
Solderingterminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.0252 271
Solderingterminal Snap-action switching element 2 NC / 2 NO 42° right 52-132.0252 273
Solderingterminal Snap-action switching element 3 NC / 3 NO 42° right 52-133.0252 274
Solderingterminal Snap-action switching element 4 NC / 4 NO 42° right 52-134.0252 275
Rest - Maintained Plug-interminal Snap-action switching element 1 NC / 1 NO 90° right 52-271.022 277
Solderingterminal Snap-action switching element 1 NC / 1 NO 90° right 52-271.0252 276
Solderingterminal Snap-action switching element 2 NC / 2 NO 90° right 52-272.0252 278
Solderingterminal Snap-action switching element 3 NC / 3 NO 90° right 52-273.0252 279
Solderingterminal Snap-action switching element 4 NC / 4 NO 90° right 52-274.0252 280
Rest - Momentary Universal terminal Low-level element 1 NC / 1 NO 42° right 52-433.036 264 27
Universal terminal Low-level element 1 NO 42° right 52-435.036 265 27
Universal terminal Low-level element 1 NC 42° right 52-436.036 263 27
Rest - Maintained Universal terminal Low-level element 2 NO 90° right 52-471.036 270 27
Universal terminal Low-level element 2 NC 90° right 52-472.036 269 27
Universal terminal Low-level element 1 NC / 1 NO 90° right 52-473.036 267 27
Universal terminal Low-level element 1 NO 90° right 52-475.036 268 27
Universal terminal Low-level element 1 NC 90° right 52-476.036 266 27
Contacts: NC = Normally closed, NO = Normally open
Flush design
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48
41 … 63.5
9.5
2
45 3
1.5 ... 4
B
C
A
L
NJO
NJO
3NBY
0I
0
I
Wiring diagrams
Wiring diagram 263 Wiring diagram 264 Wiring diagram 265 Wiring diagram 266
Wiring diagram 267 Wiring diagram 268 Wiring diagram 269
Wiring diagram 270 Wiring diagram 271 Wiring diagram 272
Wiring diagram 273 Wiring diagram 274
Wiring diagram 275 Wiring diagram 276
Wiring diagram 277 Wiring diagram 278
Flush design
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84
92
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1b+
2
a-
13b+
4
2a-
1b+
2a-
1b+
2
a-
13b+
4
2a-
1b+
2a-
1b+
2
3
4a-
13b+
4
2a-
31x2+
2
4x1-
I
31b+
2
4a-
I
31x2+
24x1-
I
31
24
II
31x2+
24x1-
I
31
24
II
31
24
III
31x2+
24x1-
I
31
24
II
31
24
III
31
24
IV
31x2+
24x1-
I
31b+
24a-
I
31x2+
24x1-
I
31
24
II
Wiring diagrams
Wiring diagram 279 Wiring diagram 280
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Flush design
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31x2+
2
4x1-
I
31
2
4
II
31
2
4
III
31x2+
2
4x1-
I
31
2
4
II
31
2
4
III
31
2
4
IV
10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Selectorswitch2positionsround, IP65
Equipment consisting of (schematic overview)
Lever Page 657
LED Page 660
Actuator
Front bezel set Page 658
Anti-twistring Page 659
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Solder terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Illuminative
Actuator, Front dimension Ø 25 mm
Switching action Terminal Switching system Contacts Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest - Momentary Plug-interminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.022 272
Solderingterminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.0252 271
Solderingterminal Snap-action switching element 2 NC / 2 NO 42° right 52-132.0252 273
Solderingterminal Snap-action switching element 3 NC / 3 NO 42° right 52-133.0252 274
Solderingterminal Snap-action switching element 4 NC / 4 NO 42° right 52-134.0252 275
Rest - Maintained Plug-interminal Snap-action switching element 1 NC / 1 NO 90° right 52-271.022 277
Solderingterminal Snap-action switching element 1 NC / 1 NO 90° right 52-271.0252 276
Solderingterminal Snap-action switching element 2 NC / 2 NO 90° right 52-272.0252 278
Solderingterminal Snap-action switching element 3 NC / 3 NO 90° right 52-273.0252 279
Solderingterminal Snap-action switching element 4 NC / 4 NO 90° right 52-274.0252 280
Rest - Momentary Universal terminal Low-level element 1 NC / 1 NO 42° right 52-433.036 264 27
Universal terminal Low-level element 1 NO 42° right 52-435.036 265 27
Universal terminal Low-level element 1 NC 42° right 52-436.036 263 27
Rest - Maintained Universal terminal Low-level element 2 NO 90° right 52-471.036 270 27
Universal terminal Low-level element 2 NC 90° right 52-472.036 269 27
Universal terminal Low-level element 1 NC / 1 NO 90° right 52-473.036 267 27
Universal terminal Low-level element 1 NO 90° right 52-475.036 268 27
Universal terminal Low-level element 1 NC 90° right 52-476.036 266 27
Contacts: NC = Normally closed, NO = Normally open
Flush design
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41 … 63.5
9.5
2
45 3
1.5 ... 4
B
C
A
L
NJO
NJO
±
0I
0
I
Wiring diagrams
Wiring diagram 263 Wiring diagram 264 Wiring diagram 265 Wiring diagram 266
Wiring diagram 267 Wiring diagram 268 Wiring diagram 269
Wiring diagram 270 Wiring diagram 271 Wiring diagram 272
Wiring diagram 273 Wiring diagram 274
Wiring diagram 275 Wiring diagram 276
Wiring diagram 277 Wiring diagram 278
Flush design
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1b+
2
a-
13b+
4
2a-
1b+
2a-
1b+
2
a-
13b+
4
2a-
1b+
2a-
1b+
2
3
4a-
13b+
4
2a-
31x2+
2
4x1-
I
31b+
2
4a-
I
31x2+
24x1-
I
31
24
II
31x2+
24x1-
I
31
24
II
31
24
III
31x2+
24x1-
I
31
24
II
31
24
III
31
24
IV
31x2+
24x1-
I
31b+
24a-
I
31x2+
24x1-
I
31
24
II
Wiring diagrams
Wiring diagram 279 Wiring diagram 280
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Flush design
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92
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31x2+
2
4x1-
I
31
2
4
II
31
2
4
III
31x2+
2
4x1-
I
31
2
4
II
31
2
4
III
31
2
4
IV
10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Keylockswitch2 positions square, IP65
Equipment consisting of (schematic overview)
Actuator
Front bezel set Page 658
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Solder terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
Actuator, Front dimension 24 mm x 24 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 42° right 51-145.022DF 257 27
1 NC / 1 NO Solderingterminal Snap-action switching element 42° right 51-145.025D2F 257
2 NC / 2 NO Solderingterminal Snap-action switching element 42° right 51-146.025D2F 113
3 NC / 3 NO Solderingterminal Snap-action switching element 42° right 51-147.025D2F 114
4 NC / 4 NO Solderingterminal Snap-action switching element 42° right 51-148.025D2F 258
Rest (a) - Maintained (a) 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-155.022DF 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-155.025D2F 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-156.025D2F 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-157.025D2F 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-158.025D2F 116
Rest (a) - Maintained 1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-255.022DF 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-255.025D2F 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-256.025D2F 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-257.025D2F 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-258.025D2F 116
Rest - Maintained (a) 1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-355.022DF 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-355.025D2F 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-356.025D2F 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-357.025D2F 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-358.025D2F 116
Rest (a) - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-441.036DF 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-442.036DF 111 27
Contacts: NC = Normally closed, NO = Normally open
a = Key remove
Flush design
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35 … 57.5
3.5
1.5 ... 5
41.5 3
27
B
A
C
NJO
NJO
3NBY
0I
0
I
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Maintained 2 NO Universal terminal Low-level element 90° right 51-444.036DF 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-445.036DF 111 27
Rest - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-447.036DF 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-448.036DF 111 27
Rest (a) - Momentary 2 NO Universal terminal Low-level element 42° right 51-457.036DF 109 27
1 NC / 1 NO Universal terminal Low-level element 42° right 51-458.036DF 110 27
Contacts: NC = Normally closed, NO = Normally open
a = Key remove
Wiring diagrams
Wiring diagram 107 Wiring diagram 108 Wiring diagram 109
Wiring diagram 110 Wiring diagram 111 Wiring diagram 112
Wiring diagram 113 Wiring diagram 114
Wiring diagram 115 Wiring diagram 116
Wiring diagram 257 Wiring diagram 258
Flush design
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2
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I
31
2
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I
31
2
4
II
13
4
2
13
4
2
13
4
2
13
4
2
31
24
I
31
24
II
31
24
I
31
24
II
31
24
III
31
24
I
31
24
II
31
24
III
31
24
I
31
24
II
31
24
III
31
24
IV
31
24
I
31
24
I
31
24
II
31
24
III
31
24
IV
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Flush design
www.eao.com
As a successful company with production sites around the world, EAO is actively
committed to the e ective implementation of a sustainable environmental policy.
We act responsibly. In our environmental focus, we set benchmarks for ourselves, our pro-
ducts and our customers. Throughout our entire value chain, we think and work in a way
that is resource-ef cient and environmentally-friendly. When selecting our components and
raw materials, we ensure that we have partnerships in place with certi ed manufacturers
and that we adhere to EC guidelines on hazardous materials (RoHS).
Green Touch.
O ering sustainability.
EAO creates possibilities. Since 1947.
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10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Keylockswitch2 positions rectangular, IP65
Equipment consisting of (schematic overview)
Actuator
Front bezel set Page 658
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Solder terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
Actuator, Front dimension 30 mm x 24 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Maintained (a) 1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-195.022DF 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-195.025D2F 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-196.025D2F 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-197.025D2F 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-198.025D2F 116
Rest (a) - Maintained 1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-295.022DF 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-295.025D2F 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-296.025D2F 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-297.025D2F 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-298.025D2F 116
Rest - Maintained (a) 1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-395.022DF 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-395.025D2F 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-396.025D2F 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-397.025D2F 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-398.025D2F 116
Rest (a) - Momentary 1 NC / 1 NO Solderingterminal Snap-action switching element 42° right 51-495.022DF 257 27
Rest (a) - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-401.036DF 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-402.036DF 111 27
Rest (a) - Maintained 2 NO Universal terminal Low-level element 90° right 51-404.036DF 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-405.036DF 111 27
Rest - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-407.036DF 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-408.036DF 111 27
Contacts: NC = Normally closed, NO = Normally open
a = Key remove
Flush design
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44.5
35 … 57.5
3.5
1.5 ... 5
41.5 3
27
B
A
C
NJO
NJO
3 NBY
0
I
0I
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Momentary 2 NO Universal terminal Low-level element 42° right 51-427.036DF 109 27
1 NC / 1 NO Universal terminal Low-level element 42° right 51-428.036DF 116 27
1 NC / 1 NO Solderingterminal Snap-action switching element 42° right 51-495.025D2F 257
2 NC / 2 NO Solderingterminal Snap-action switching element 42° right 51-496.025D2F 113
3 NC / 3 NO Solderingterminal Snap-action switching element 42° right 51-497.025D2F 114
4 NC / 4 NO Solderingterminal Snap-action switching element 42° right 51-498.025D2F 258
Contacts: NC = Normally closed, NO = Normally open
a = Key remove
Wiring diagrams
Wiring diagram 107 Wiring diagram 108 Wiring diagram 109
Wiring diagram 111 Wiring diagram 112 Wiring diagram 113
Wiring diagram 114 Wiring diagram 115
Wiring diagram 116 Wiring diagram 257
Wiring diagram 258
Flush design
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96
31
2
4
I
31
2
4
I
31
2
4
II
13
4
2
13
4
2
13
4
2
31
24
I
31
24
II
31
24
I
31
24
II
31
24
III
31
24
I
31
24
II
31
24
III
31
24
I
31
24
II
31
24
III
31
24
IV
31
24
I
31
24
I
31
24
II
31
24
III
31
24
IV
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Flush design
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84
92
96
10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Keylockswitch2 positions round, IP65
Equipment consisting of (schematic overview)
Actuator
Front bezel set Page 658
Anti-twistring Page 659
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Solder terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
Actuator, Front dimension Ø 25 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Maintained (a) 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-135.022DF 107
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-135.025D2F 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-136.025D2F 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-137.025D2F 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-138.025D2F 116
Rest (a) - Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 42° right 51-141.022DF 257
1 NC / 1 NO Solderingterminal Snap-action switching element 42° right 51-141.025D2F 257
2 NC / 2 NO Solderingterminal Snap-action switching element 42° right 51-142.025D2F 113
3 NC / 3 NO Solderingterminal Snap-action switching element 42° right 51-143.025D2F 114
4 NC / 4 NO Solderingterminal Snap-action switching element 42° right 51-144.025D2F 258
Rest (a) - Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-235.022DF 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-236.025D2F 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-237.025D2F 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-238.025D2F 116
Rest - Maintained (a) 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-335.022DF 107
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-335.025D2F 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-336.025D2F 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-337.025D2F 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-338.025D2F 116
Rest (a) - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-411.036DF 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-412.036DF 111 27
Rest (a) - Maintained 2 NO Universal terminal Low-level element 90° right 51-414.036DF 112 27
Contacts: NC = Normally closed, NO = Normally open
a = Key remove
Flush design
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44.5
35 … 57.5
3.5
1.5 ... 5
41.5 3
27
B
A
C
NJO
NJO
±
0
I
0I
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Maintained 1 NC / 1 NO Universal terminal Low-level element 90° right 51-415.036DF 111 27
Rest - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-417.036DF 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-418.036DF 111 27
Rest (a) - Momentary 2 NO Universal terminal Low-level element 42° right 51-437.036DF 109 27
1 NC / 1 NO Universal terminal Low-level element 42° right 51-438.036DF 116 27
Contacts: NC = Normally closed, NO = Normally open
a = Key remove
Wiring diagrams
Wiring diagram 107 Wiring diagram 108 Wiring diagram 109
Wiring diagram 111 Wiring diagram 112 Wiring diagram 113
Wiring diagram 114 Wiring diagram 115
Wiring diagram 116 Wiring diagram 257
Wiring diagram 258
Flush design
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82
84
92
96
31
24
I
31
24
I
31
24
II
13
4
2
13
4
2
13
4
2
31
24
I
31
24
II
31
24
I
31
24
II
31
24
III
31
24
I
31
24
II
31
24
III
31
2
4
I
31
2
4
II
31
2
4
III
31
2
4
IV
31
2
4
I
31
24
I
31
24
II
31
24
III
31
24
IV
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Flush design
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82
84
92
96
10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Keylockswitch3 positions square, IP65
Equipment consisting of (schematic overview)
Actuator
Front bezel set Page 658
Fixing nut
Switching element
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
Actuator, Front dimension 24 mm x 24 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-381.F22DF 262
Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-382.F22DF 262
Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-383.F22DF 262
Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 42° right 51-384.F22DF 260
Momentary - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-385.F22DF 259
Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-386.F22DF 259
Maintained - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 42° right 51-387.F22DF 261
Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 42° right 51-388.F22DF 261
Contacts: NC = Normally closed, NO = Normally open
a = Key remove
Wiring diagrams
Wiring diagram 259 Wiring diagram 260
Flush design
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31
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51
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61
70
71
82
84
92
96
50
3.5
27
1.5 ... 5
NJO
NJO
3NBY
0
III
0III
0
I
II
0II
I
31
2
4
C
31
2
4
B
31
2
4
C
31
2
4
B
Wiring diagrams
Wiring diagram 261 Wiring diagram 262
Flush design
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92
96
31
2
4
C
31
2
4
B
31
2
4
C
31
2
4
B
Keylockswitch3 positions rectangular, IP65
Equipment consisting of (schematic overview)
Actuator
Front bezel set Page 658
Fixing nut
Switching element
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
Actuator, Front dimension 30 mm x 24 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-361.F22DF 262
Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-362.F22DF 262
Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-363.F22DF 262
Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 42° right 51-364.F22DF 260
Momentary - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-365.F22DF 259
Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-366.F22DF 259
Maintained - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 42° right 51-367.F22DF 261
Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 42° right 51-368.F22DF 261
Contacts: NC = Normally closed, NO = Normally open
a = Key remove
Wiring diagrams
Wiring diagram 259 Wiring diagram 260
Flush design
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31
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51
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57
61
70
71
82
84
92
96
50
3.5
27
1.5 ... 5
NJO
NJO
3 NBY
0
III
0III
0
I
II
0II
I
31
2
4
C
31
2
4
B
31
2
4
C
31
2
4
B
Wiring diagrams
Wiring diagram 261 Wiring diagram 262
Flush design
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92
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31
2
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C
31
2
4
B
31
2
4
C
31
2
4
B
Keylockswitch3 positions round, IP65
Equipment consisting of (schematic overview)
Actuator
Front bezel set Page 658
Anti-twistring Page 659
Fixing nut
Switching element
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
Actuator, Front dimension Ø 25 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-371.F22DF 262
Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-372.F22DF 262
Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-373.F22DF 262
Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 42° right 51-374.F22DF 260
Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-376.F22DF 259
Maintained - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 42° right 51-377.F22DF 261
Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 42° right 51-378.F22DF 261
Momentary - Rest - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-375.F22DF 259
Contacts: NC = Normally closed, NO = Normally open
a = Key remove
Flush design
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57
61
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71
82
84
92
96
50
3.5
27
1.5 ... 5
NJO
NJO
±
0
III
0III
0
I
II
0II
I
Wiring diagrams
Wiring diagram 259 Wiring diagram 260
Wiring diagrams
Wiring diagram 261 Wiring diagram 262
Flush design
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92
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31
2
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C
31
2
4
B
31
2
4
C
31
2
4
B
31
24
C
31
24
B
31
24
C
31
24
B
Indicator square, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Front bezel set Page 658
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension 24 mm x 24 mm
Terminal Part No.
Wiring
diagram
Com-
ponent
Layout
Plug-interminal 51-050.002F 4 105
Solderingterminal 51-050.005F 4 105
Universal terminal 51-051.006F 3 105
Wiring diagrams
Wiring diagram 3 Wiring diagram 4
Flush design
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19
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31
41
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51
56
57
61
70
71
82
84
92
96
31
2
34
1.5 ... 4
41 3
B
C
A
NJO
NJO
3NBY
b+
a-
x2+
x1-
Component layouts
Component layout 105
Dimensions [mm]
A = Terminals (rear side)
Flush design
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96
Ø18 mm
X1 X2
A
Indicator rectangular, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Front bezel set Page 658
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension 30 mm x 24 mm
Terminal Part No.
Wiring
diagram
Com-
ponent
Layout
Plug-interminal 51-050.002F 4 105
Solderingterminal 51-050.005F 4 105
Universal terminal 51-051.006F 3 105
Wiring diagrams
Wiring diagram 3 Wiring diagram 4
Flush design
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31
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57
61
70
71
82
84
92
96
31
2
34
1.5 ... 4
41 3
B
C
A
NJO
NJO
3 NBY
b+
a-
x2+
x1-
Component layouts
Component layout 105
Dimensions [mm]
A = Terminals (rear side)
Flush design
www.eao.com
On our website you can download technical data, assembly instructions,
catalogs, brochures and much more.
EAO Downloads.
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EAO creates possibilities. Since 1947.
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82
84
92
96
Ø18 mm
X1 X2
A
Indicator round, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Front bezel set Page 658
Anti-twistring Page 659
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension Ø 25 mm
Terminal Part No.
Wiring
diagram
Com-
ponent
Layout
Plug-interminal 51-050.002F 4 105
Solderingterminal 51-050.005F 4 105
Universal terminal 51-051.006F 3 105
Wiring diagrams
Wiring diagram 3 Wiring diagram 4
Flush design
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92
96
31
2
34
1.5 ... 4
41 3
B
C
A
NJO
NJO
±
b+
a-
x2+
x1-
Component layouts
Component layout 105
Dimensions [mm]
A = Terminals (rear side)
Flush design
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Ø18 mm
X1 X2
A
Illuminated pushbutton square, IP65
Equipment consisting of (schematic overview)
Lens Page {$l=Vorsatz}
LED Page 660
Actuator
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
D = Universal-Solder terminal
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension 18 mm x 18 mm
Switching action Contacts Terminal Switching system Diode 1N4007 Part No.
Wiring
diagram
Com-
ponent
Layout
Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 51-151.022 20 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-151.0252 17
2 NC / 2 NO Solderingterminal Snap-action switching element 51-152.0252 24
3 NC / 3 NO Solderingterminal Snap-action switching element 51-153.0252 26
4 NC / 4 NO Solderingterminal Snap-action switching element 51-154.0252 28
Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 51-281.022 18 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-281.0252 19
2 NC / 2 NO Solderingterminal Snap-action switching element 51-282.0252 25
3 NC / 3 NO Solderingterminal Snap-action switching element 51-283.0252 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-284.0252 29
Momentary 2 NO Universal terminal Low-level element 51-451.036 11 27
2 NC Universal terminal Low-level element 51-452.036 30 27
1 NC / 1 NO Universal terminal Low-level element 51-453.036 7 27
1 NO Universal terminal Low-level element 51-455.036 9 27
Maintained 2 NO Universal terminal Low-level element 51-481.036 12 27
1 NC / 1 NO Universal terminal Low-level element 51-483.036 8 27
1 NO Universal terminal Low-level element 51-485.036 10 27
1 NC Universal terminal Low-level element 51-486.036 6 27
Momentary 1 NC / 1 NO Universal soldering terminal Snap-action switching element 2 51-710.0292 15
2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-712.0292 23
Maintained 1 NC / 1 NO Universal soldering terminal Snap-action switching element 2 51-718.0292 16
2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-720.0292 32
Contacts: NC = Normally closed, NO = Normally open
Raised design
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92
96
1.5 … 6
28 … 50.5
10.5
36
43.5 / 51
32 3
B
D
A
C
18min.
24min.
18x24
18x18/Ø18
18min.
15+0.1
0
Ø16.2+0.2
0
Ø16.2+0.2
0
1.7 0
-
0.1
Wiring diagrams
Wiring diagram 6 Wiring diagram 7 Wiring diagram 8 Wiring diagram 9 Wiring diagram 10 Wiring diagram 11
Wiring diagram 12 Wiring diagram 15 Wiring diagram 16 Wiring diagram 17
Wiring diagram 18 Wiring diagram 19 Wiring diagram 20 Wiring diagram 23
Wiring diagram 24 Wiring diagram 25 Wiring diagram 26
Wiring diagram 27 Wiring diagram 28
Wiring diagram 29 Wiring diagram 30 Wiring diagram 32
Raised design
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92
96
1b+
2
a-
13b+
4
2a-
13b+
4
2a-
1b+
2a-
1b+
2a-
13b+
4
2a-
13b+
4
2a-
31b+
24a-
3
2
I
1
4
31b+
24a-
3
2
I
1
4
31 x2+
24 x1-
I
31b+
2
4a-
I
31 x2+
2
4 x1-
I
31b+
2
4a-
I
31b+
2
4a-
3
2
I
31
2
4
II
1
4
31 x2+
24 x1-
I
31
24
II
31 x2+
24 x1-
I
31
24
II
31 x2+
24 x1-
I
31
24
II
31
24
III
31 x2+
24 x1-
I
31
24
II
31
24
III
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
1b+
2
3
4a-
31b+
24a-
3
2
I
31
24
II
1
4
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Raised design
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57
61
70
71
82
84
92
96
10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Illuminated pushbutton rectangular, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
D = Universal-Solder terminal
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension 24 mm x 18 mm
Switching action Contacts Terminal Switching system Diode 1N4007 Part No.
Wiring
diagram
Com-
ponent
Layout
Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 51-121.022 20 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-121.0252 17
2 NC / 2 NO Solderingterminal Snap-action switching element 51-122.0252 24
3 NC / 3 NO Solderingterminal Snap-action switching element 51-123.0252 26
4 NC / 4 NO Solderingterminal Snap-action switching element 51-124.0252 28
Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 51-261.022 18 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-261.0252 19
2 NC / 2 NO Solderingterminal Snap-action switching element 51-262.0252 25
3 NC / 3 NO Solderingterminal Snap-action switching element 51-263.0252 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-264.0252 29
Momentary 2 NO Universal terminal Low-level element 51-421.036 11 27
2 NC Universal terminal Low-level element 51-422.036 30 27
1 NC / 1 NO Universal terminal Low-level element 51-423.036 7 27
1 NO Universal terminal Low-level element 51-425.036 9 27
1 NC Universal terminal Low-level element 51-426.036 5 27
Maintained 2 NO Universal terminal Low-level element 51-461.036 12 27
1 NC / 1 NO Universal terminal Low-level element 51-463.036 8 27
1 NO Universal terminal Low-level element 51-465.036 10 27
Momentary 1 NC / 1 NO Universal soldering terminal Snap-action switching element 1 51-705.0292 13
1 NC / 1 NO Universal soldering terminal Snap-action switching element 2 51-706.0292 15
2 NC / 2 NO Universal soldering terminal Snap-action switching element 1 51-707.0292 32
2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-708.0292 23
Maintained 1 NC / 1 NO Universal soldering terminal Snap-action switching element 2 51-714.0292 16
2 NC / 2 NO Universal soldering terminal Snap-action switching element 1 51-715.0292 22
2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-716.0292 32
Contacts: NC = Normally closed, NO = Normally open
Raised design
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1.5 … 6
28 … 50.5
10.5
36
43.5 / 51
32 3
B
D
A
C
18min.
24min.
18x24
18x18/Ø18
18min.
15+0.1
0
Ø16.2+0.2
0
Ø16.2+0.2
0
1.7 0
-
0.1
Wiring diagrams
Wiring diagram 5 Wiring diagram 7 Wiring diagram 8 Wiring diagram 9 Wiring diagram 10 Wiring diagram 11
Wiring diagram 12 Wiring diagram 13 Wiring diagram 15 Wiring diagram 16
Wiring diagram 17 Wiring diagram 18 Wiring diagram 19 Wiring diagram 20
Wiring diagram 22 Wiring diagram 23 Wiring diagram 24
Wiring diagram 25 Wiring diagram 26 Wiring diagram 27
Wiring diagram 28 Wiring diagram 29
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92
96
1b+
2
a-
13b+
4
2a-
13b+
4
2a-
1b+
2a-
1b+
2a-
13b+
4
2a-
13b+
4
2a-
31b+
24a-
3
2
I
31b+
24a-
3
2
I
1
4
31b+
24a-
3
2
I
1
4
31 x2+
2
4 x1-
I
31b+
2
4a-
I
31 x2+
2
4 x1-
I
31b+
2
4a-
I
31b+
24a-
3
2
I
31
24
II
31b+
24a-
3
2
I
31
24
II
1
4
31 x2+
24 x1-
I
31
24
II
31 x2+
24 x1-
I
31
24
II
31 x2+
24 x1-
I
31
24
II
31
24
III
31 x2+
24 x1-
I
31
24
II
31
24
III
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
Wiring diagrams
Wiring diagram 30 Wiring diagram 32
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
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92
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1b+
2
3
4
a-
31b+
2
4a-
3
2
I
31
2
4
II
1
4
10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Illuminated pushbutton round, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
D = Universal-Solder terminal
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension Ø 18 mm
Switching action Contacts Terminal Switching system Diode 1N4007 Part No.
Wiring
diagram
Com-
ponent
Layout
Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 51-131.022 20 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-131.0252 17
2 NC / 2 NO Solderingterminal Snap-action switching element 51-132.0252 24
3 NC / 3 NO Solderingterminal Snap-action switching element 51-133.0252 26
4 NC / 4 NO Solderingterminal Snap-action switching element 51-134.0252 28
Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 51-271.022 18 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-271.0252 19
2 NC / 2 NO Solderingterminal Snap-action switching element 51-272.0252 25
3 NC / 3 NO Solderingterminal Snap-action switching element 51-273.0252 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-274.0252 29
Momentary 2 NO Universal terminal Low-level element 51-431.036 11 27
1 NC / 1 NO Universal terminal Low-level element 51-433.036 7 27
1 NO Universal terminal Low-level element 51-435.036 9 27
1 NC Universal terminal Low-level element 51-436.036 5 27
Maintained 2 NO Universal terminal Low-level element 51-471.036 12 27
1 NC / 1 NO Universal terminal Low-level element 51-473.036 8 27
1 NO Universal terminal Low-level element 51-475.036 10 27
Momentary 2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-746.0292 23
Maintained 1 NC / 1 NO Universal soldering terminal Snap-action switching element 1 51-747.0292 14
2 NC / 2 NO Universal soldering terminal Snap-action switching element 1 51-749.0292 22
2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-750.0292 32
Contacts: NC = Normally closed, NO = Normally open
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10.5
36
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32 3
B
D
A
C
18min.
24min.
18x24
18x18/Ø18
18min.
15+0.1
0
Ø16.2+0.2
0
Ø16.2+0.2
0
1.7 0
-
0.1
Wiring diagrams
Wiring diagram 5 Wiring diagram 7 Wiring diagram 8 Wiring diagram 9 Wiring diagram 10 Wiring diagram 11
Wiring diagram 12 Wiring diagram 14 Wiring diagram 17 Wiring diagram 18 Wiring diagram 19
Wiring diagram 20 Wiring diagram 22 Wiring diagram 23
Wiring diagram 24 Wiring diagram 25 Wiring diagram 26
Wiring diagram 27 Wiring diagram 28
Wiring diagram 29 Wiring diagram 32
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84
92
96
1b+
2
a-
13b+
4
2a-
13b+
4
2a-
1b+
2a-
1b+
2a-
13b+
4
2a-
13b+
4
2a-
31b+
24a-
3
2
I
31 x2+
24 x1-
I
31b+
24a-
I
31 x2+
24 x1-
I
31b+
2
4a-
I
31b+
2
4a-
3
2
I
31
2
4
II
31b+
2
4a-
3
2
I
31
2
4
II
1
4
31 x2+
24 x1-
I
31
24
II
31 x2+
24 x1-
I
31
24
II
31 x2+
24 x1-
I
31
24
II
31
24
III
31 x2+
24 x1-
I
31
24
II
31
24
III
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
31 x2+
24 x1-
I
31
24
II
31
24
III
31
24
IV
31b+
24a-
3
2
I
31
24
II
1
4
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Raised design
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92
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10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Mushroom-head pushbutton, IP65
Equipment consisting of (schematic overview)
Actuator
Anti-twistring
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• If the anti-twist ring is not used the panel thick-
ness increases to 4 mm
Actuator, Front dimension Ø 24,5 mm
Contacts Terminal Lens colour Switching system Part No.
Wiring
diagram
2 NC Universal terminal Red Low-level element 51-152.0262 243
Universal terminal Yellow Low-level element 51-152.0264 243
Universal terminal Blue Low-level element 51-152.0266 243
1 NC / 1 NO Plug-interminal Red Snap-action switching element 51-153.0222 247
Plug-interminal Yellow Snap-action switching element 51-153.0224 247
Plug-interminal Blue Snap-action switching element 51-153.0226 247
Universal terminal Red Low-level element 51-153.0262 406
Universal terminal Yellow Low-level element 51-153.0264 406
Universal terminal Blue Low-level element 51-153.0266 406
Solderingterminal Red Snap-action switching element 51-156.0252 247
Solderingterminal Yellow Snap-action switching element 51-156.0254 247
Solderingterminal Blue Snap-action switching element 51-156.0256 247
1 NC Universal terminal Red Low-level element 51-156.0262 247
Universal terminal Yellow Low-level element 51-156.0264 404
Universal terminal Blue Low-level element 51-156.0266 404
2 NC / 2 NO Solderingterminal Red Snap-action switching element 51-159.0252 251
Solderingterminal Yellow Snap-action switching element 51-159.0254 251
Solderingterminal Blue Snap-action switching element 51-159.0256 251
Contacts: NC = Normally closed, NO = Normally open
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27.6
24 3
1 ... 3
18.8
26.3
19
B
A
C
NJO
NJO
±
Wiring diagrams
Wiring diagram 243 Wiring diagram 247 Wiring diagram 251 Wiring diagram 404 Wiring diagram 406
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3
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31
2
4
I
31
2
4
I
31
2
4
II
1
2
13
4
2
Selectorswitch 2positions, round, IP65
Equipment consisting of (schematic overview)
Lever Page 657
LED Page 660
Actuator
Anti-twistring
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
D = Universal-Solder terminal
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Illuminative
Actuator, Front dimension Ø 18 mm
Switching action Terminal Switching system Contacts
Switching
angle
Diode
1N4007 Part No.
Wiring
diagram
Com-
ponent
Layout
Rest - Momen-
tary
Plug-interminal Snap-action switching
element
1 NC / 1
NO
42° right 52-131.022 272
Solderingter-
minal
Snap-action switching
element
1 NC / 1
NO
42° right 52-131.0252 271
Solderingter-
minal
Snap-action switching
element
2 NC / 2
NO
42° right 52-132.0252 273
Solderingter-
minal
Snap-action switching
element
3 NC / 3
NO
42° right 52-133.0252 274
Solderingter-
minal
Snap-action switching
element
4 NC / 4
NO
42° right 52-134.0252 275
Rest - Maintained Plug-interminal Snap-action switching
element
1 NC / 1
NO
90° right 52-271.022 277
Solderingter-
minal
Snap-action switching
element
1 NC / 1
NO
90° right 52-271.0252 276
Solderingter-
minal
Snap-action switching
element
2 NC / 2
NO
90° right 52-272.0252 278
Solderingter-
minal
Snap-action switching
element
3 NC / 3
NO
90° right 52-273.0252 279
Solderingter-
minal
Snap-action switching
element
4 NC / 4
NO
90° right 52-274.0252 280
Rest - Momen-
tary
Universal terminal Low-level element 1 NC / 1
NO
42° right 52-433.036 264 27
Contacts: NC = Normally closed, NO = Normally open
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36
43.5 / 51
36 3
A
B
D
C
NJO
NJO
Y
Y±
NJO
±
0I
0
I
Switching
action Terminal Switching system Contacts
Switching
angle
Diode
1N4007 Part No.
Wiring
diagram
Com-
ponent
Layout
Rest - Momen-
tary
Universal terminal Low-level element 1 NO 42° right 52-435.036 265 27
Universal terminal Low-level element 1 NC 42° right 52-436.036 263 27
Rest - Main-
tained
Universal terminal Low-level element 2 NO 90° right 52-471.036 270 27
Universal terminal Low-level element 2 NC 90° right 52-472.036 269 27
Universal terminal Low-level element 1 NC / 1
NO
90° right 52-473.036 267 27
Universal terminal Low-level element 1 NO 90° right 52-475.036 268 27
Universal terminal Low-level element 1 NC 90° right 52-476.036 266 27
Rest - Momen-
tary
Universal soldering
terminal
Snap-action switching
element
2 NC / 2
NO
42° right 1 52-745.0292 281
Rest - Main-
tained
Universal soldering
terminal
Snap-action switching
element
1 NC / 1
NO
90° right 1 52-747.0292 282
Universal soldering
terminal
Snap-action switching
element
2 NC / 2
NO
90° right 1 52-749.0292 283
Universal soldering
terminal
Snap-action switching
element
2 NC / 2
NO
90° right 2 52-750.0292 284
Contacts: NC = Normally closed, NO = Normally open
Wiring diagrams
Wiring diagram 263 Wiring diagram 264 Wiring diagram 265 Wiring diagram 266
Wiring diagram 267 Wiring diagram 268 Wiring diagram 269
Wiring diagram 270 Wiring diagram 271 Wiring diagram 272
Wiring diagram 273 Wiring diagram 274
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1b+
2a-
13b+
4
2a-
1b+
2a-
1b+
2a-
13b+
4
2a
-
1b+
2a
-
1b+
2
3
4
a-
13b+
4
2a-
31x2+
24x1-
I
31b+
24a-
I
31x2+
2
4x1-
I
31
2
4
II
31x2+
2
4x1-
I
31
2
4
II
31
2
4
III
Wiring diagrams
Wiring diagram 275 Wiring diagram 276
Wiring diagram 277 Wiring diagram 278
Wiring diagram 279 Wiring diagram 280
Wiring diagram 281 Wiring diagram 282
Wiring diagram 283 Wiring diagram 284
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31x2+
2
4x1-
I
31
2
4
II
31
2
4
III
31
2
4
IV
31x2+
2
4x1-
I
31b+
24a-
I
31x2+
24x1-
I
31
24
II
31x2+
2
4x1-
I
31
2
4
II
31
2
4
III
31x2+
2
4x1-
I
31
2
4
II
31
2
4
III
31
2
4
IV
31b+
24a-
3
2
I
31
24
II
31b+
24a-
3
2
I
31b+
24a-
3
2
I
31
24
II
31b+
24a-
3
2
I
31
24
II
1
4
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
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10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Selectorswitch 3positions, round, IP65
Equipment consisting of (schematic overview)
Lever Page 657
LED Page 660
Actuator
Anti-twistring
Switching element
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Illuminative
Actuator, Front dimension Ø 18 mm
Switching action Terminal Switching system Contacts Switching angle Part No.
Wiring
diagram
Maintained - Rest - Maintained Plug-interminal Snap-action switching element 2 NC / 2 NO 90° left / 90° right 52-571.F22A 288
Momentary - Rest - Momentary Plug-interminal Snap-action switching element 2 NC / 2 NO 42° left / 42° right 52-572.F22A 285
Momentary - Rest - Maintained Plug-interminal Snap-action switching element 2 NC / 2 NO 42° left / 90° right 52-573.F22A 287
Maintained - Rest - Momentary Plug-interminal Snap-action switching element 2 NC / 2 NO 90° left / 42° right 52-574.F22A 286
Contacts: NC = Normally closed, NO = Normally open
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42
6
14
1.5 ... 6
NJO
NJO
Y
Y±
NJO
±
0
III
0III
0
I
II
0II
I
Wiring diagrams
Wiring diagram 285 Wiring diagram 286
Wiring diagram 287 Wiring diagram 288
Raised design
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2
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C
31
2
4
B
b+
a-
31
2
4
C
31
2
4
B
b+
a-
31
24
C
31
24
B
b+
a-
31
24
C
31
24
B
b+
a-
Keylockswitch2positions square, IP65
Equipment consisting of (schematic overview)
Actuator
Anti-twistring
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
• Front plastic black
Actuator, Front dimension 18 mm x 18 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 42° right 51-145.022D 257 27
1 NC / 1 NO Solderingterminal Snap-action switching element 42° right 51-145.025D2 257
2 NC / 2 NO Solderingterminal Snap-action switching element 42° right 51-146.025D2 113
4 NC / 4 NO Solderingterminal Snap-action switching element 42° right 51-148.025D2 258
Rest (a) - Maintained (a) 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-155.022D 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-155.025D2 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-156.025D2 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-157.025D2 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-158.025D2 116
Rest (a) - Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-255.022D 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-255.025D2 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-256.025D2 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-257.025D2 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-258.025D2 116
Rest - Maintained (a) 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-355.022D 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-355.025D2 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-356.025D2 108
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-358.025D2 116
Rest (a) - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-441.036D 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-442.036D 111 27
Rest (a) - Maintained 2 NO Universal terminal Low-level element 90° right 51-444.036D 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-445.036D 111 27
a = Key remove
Contacts: NC = Normally closed, NO = Normally open
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26.5 … 49
11.5
35
1.5 … 6
36
32.5 3
A
B
C
NJO
NJO
Y
Y±
NJO
±
0I
0
I
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest - Maintained (a) 1 NC / 1 NO Universal terminal Low-level element 90° right 51-448.036D 111 27
Rest (a) - Momentary 2 NO Universal terminal Low-level element 42° right 51-457.036D 109 27
1 NC / 1 NO Universal terminal Low-level element 42° right 51-458.036D 110 27
a = Key remove
Contacts: NC = Normally closed, NO = Normally open
Wiring diagrams
Wiring diagram 107 Wiring diagram 108 Wiring diagram 109
Wiring diagram 110 Wiring diagram 111 Wiring diagram 112
Wiring diagram 113 Wiring diagram 115
Wiring diagram 116 Wiring diagram 257
Wiring diagram 258
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92
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31
24
I
31
24
I
31
24
II
13
4
2
13
4
2
13
4
2
13
4
2
31
2
4
I
31
2
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II
31
2
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I
31
2
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II
31
2
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III
31
24
I
31
24
II
31
24
III
31
24
IV
31
24
I
31
2
4
I
31
2
4
II
31
2
4
III
31
2
4
IV
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
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92
96
10.16
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7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Keylockswitch2positions rectangular, IP65
Equipment consisting of (schematic overview)
Actuator
Anti-twistring
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
• Front plastic black
Actuator, Front dimension 24 mm x 18 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Maintained (a) 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-195.022D 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-195.025D2 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-196.025D2 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-197.025D2 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-198.025D2 116
Rest (a) - Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-295.022D 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-295.025D2 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-296.025D2 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-297.025D2 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-298.025D2 116
Rest - Maintained (a) 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-395.022D 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-395.025D2 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-396.025D2 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-397.025D2 115
Rest (a) - Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 42° right 51-495.022D 257 27
Rest (a) - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-401.036D 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-402.036D 111 27
Rest (a) - Maintained 2 NO Universal terminal Low-level element 90° right 51-404.036D 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-405.036D 111 27
Rest - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-407.036D 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-408.036D 111 27
Rest (a) - Momentary 2 NO Universal terminal Low-level element 42° right 51-427.036D 109 27
a = Key remove
Contacts: NC = Normally closed, NO = Normally open
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11.5
35
1.5 … 6
36
32.5 3
A
B
C
NJO
NJO
Y
Y±
NJO
±
0
I
0I
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Momentary 1 NC / 1 NO Universal terminal Low-level element 42° right 51-428.036D 110 27
1 NC / 1 NO Solderingterminal Snap-action switching element 42° right 51-495.025D2 257
2 NC / 2 NO Solderingterminal Snap-action switching element 42° right 51-496.025D2 113
3 NC / 3 NO Solderingterminal Snap-action switching element 42° right 51-497.025D2 114
4 NC / 4 NO Solderingterminal Snap-action switching element 42° right 51-498.025D2 258
a = Key remove
Contacts: NC = Normally closed, NO = Normally open
Wiring diagrams
Wiring diagram 107 Wiring diagram 108 Wiring diagram 109
Wiring diagram 110 Wiring diagram 111 Wiring diagram 112
Wiring diagram 113 Wiring diagram 114
Wiring diagram 115 Wiring diagram 116
Wiring diagram 257 Wiring diagram 258
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31
24
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13
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2
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4
2
13
4
2
13
4
2
31
24
I
31
24
II
31
24
I
31
24
II
31
24
III
31
2
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I
31
2
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II
31
2
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III
31
2
4
I
31
2
4
II
31
2
4
III
31
2
4
IV
31
24
I
31
24
I
31
24
II
31
24
III
31
24
IV
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
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10.16
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18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Keylockswitch2positions round, IP65
Equipment consisting of (schematic overview)
Actuator
Anti-twistring
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
• Front plastic black
Actuator, Front dimension Ø 18 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Maintained (a) 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-135.022D 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-135.025D2 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-136.025D2 108
3 NC / 3 NO Solderingterminal Snap-action switching element 90° right 51-137.025D2 115
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-138.025D2 116
Rest (a) - Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 42° right 51-141.022D 257 27
1 NC / 1 NO Solderingterminal Snap-action switching element 42° right 51-141.025D2 257
2 NC / 2 NO Solderingterminal Snap-action switching element 42° right 51-142.025D2 113
4 NC / 4 NO Solderingterminal Snap-action switching element 42° right 51-144.025D2 258
Rest (a) - Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-235.022D 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-235.025D2 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-236.025D2 108
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-238.025D2 116
Rest - Maintained (a) 1 NC / 1 NO Plug-interminal Snap-action switching element 90° right 51-335.022D 107 27
1 NC / 1 NO Solderingterminal Snap-action switching element 90° right 51-335.025D2 107
2 NC / 2 NO Solderingterminal Snap-action switching element 90° right 51-336.025D2 108
4 NC / 4 NO Solderingterminal Snap-action switching element 90° right 51-338.025D2 116
Rest (a) - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-411.036D 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-412.036D 111 27
Rest (a) - Maintained 2 NO Universal terminal Low-level element 90° right 51-414.036D 112 27
1 NC / 1 NO Universal terminal Low-level element 90° right 51-415.036D 111 27
Rest - Maintained (a) 1 NC / 1 NO Universal terminal Low-level element 90° right 51-418.036D 111 27
a = Key remove
Contacts: NC = Normally closed, NO = Normally open
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26.5 … 49
11.5
35
1.5 … 6
36
32.5 3
A
B
C
NJO
NJO
Y
Y±
NJO
±
0
I
0I
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Com-
ponent
Layout
Rest (a) - Momentary 1 NC / 1 NO Universal terminal Low-level element 42° right 51-438.036D 110 27
a = Key remove
Contacts: NC = Normally closed, NO = Normally open
Wiring diagrams
Wiring diagram 107 Wiring diagram 108 Wiring diagram 110
Wiring diagram 111 Wiring diagram 112 Wiring diagram 113
Wiring diagram 115 Wiring diagram 116
Wiring diagram 257 Wiring diagram 258
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31
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II
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2
13
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2
31
2
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I
31
2
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II
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I
31
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II
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III
31
24
I
31
24
II
31
24
III
31
24
IV
31
2
4
I
31
2
4
I
31
2
4
II
31
2
4
III
31
2
4
IV
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Raised design
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EAO provides outstanding design – based almost exclusively
on functional and technological considerations.
EAO's products and solutions have won numerous
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EAO.
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EAO creates possibilities. Since 1947.
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10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Keylockswitch3positions square, IP65
Equipment consisting of (schematic overview)
Actuator
Anti-twistring
Fixing nut
Switching element
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
Dimensions [mm]
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
• Front plastic black
Actuator, Front dimension 18 mm x 18 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-381.F22D 262
Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-382.F22D 262
Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 42° right 51-384.F22D 260
Momentary - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-385.F22D 259
Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 42° right 51-388.F22D 261
a = Key remove
Contacts: NC = Normally closed, NO = Normally open
Wiring diagrams
Wiring diagram 259 Wiring diagram 260
Raised design
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61
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71
82
84
92
96
42
11.5
35
1.5 ... 6
NJO
NJO
Y
Y±
NJO
±
0
III
0III
0
I
II
0II
I
31
2
4
C
31
2
4
B
31
2
4
C
31
2
4
B
Wiring diagrams
Wiring diagram 261 Wiring diagram 262
Raised design
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31
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C
31
2
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B
Keylockswitch3positions rectangular, IP65
Equipment consisting of (schematic overview)
Actuator
Anti-twistring
Fixing nut
Switching element
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
Dimensions [mm]
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
• Front plastic black
Actuator, Front dimension 24 mm x 18 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-361.F22D 262
Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-362.F22D 262
Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-363.F22D 262
Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 42° right 51-364.F22D 260
Momentary - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-365.F22D 259
Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-366.F22D 259
a = Key remove
Contacts: NC = Normally closed, NO = Normally open
Wiring diagrams
Wiring diagram 259 Wiring diagram 260
Raised design
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51
56
57
61
70
71
82
84
92
96
42
11.5
35
1.5 ... 6
NJO
NJO
Y
Y±
NJO
±
0
III
0III
0
I
II
31
24
C
31
24
B
31
24
C
31
24
B
Wiring diagrams
Wiring diagram 262
Raised design
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B
Keylockswitch3positions round, IP65
Equipment consisting of (schematic overview)
Actuator
Anti-twistring
Fixing nut
Switching element
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
Dimensions [mm]
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Standard lock: DOM 311
• Front plastic black
Actuator, Front dimension Ø 18 mm
Switching action Contacts Terminal Switching system Switching angle Part No.
Wiring
diagram
Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-371.F22D 262
Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-372.F22D 262
Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 90° right 51-373.F22D 262
Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 42° right 51-374.F22D 260
Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-interminal Snap-action switching element 42° left / 90° right 51-376.F22D 259
Maintained - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 42° right 51-377.F22D 261
Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-interminal Snap-action switching element 90° left / 42° right 51-378.F22D 261
a = Key remove
Contacts: NC = Normally closed, NO = Normally open
Wiring diagrams
Wiring diagram 259 Wiring diagram 260
Raised design
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84
92
96
42
11.5
35
1.5 ... 6
NJO
NJO
Y
Y±
NJO
±
0
III
0III
0
I
II
0II
I
31
24
C
31
24
B
31
24
C
31
24
B
Wiring diagrams
Wiring diagram 261 Wiring diagram 262
Raised design
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On our website you can download technical data, assembly instructions,
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31
2
4
B
31
2
4
C
31
2
4
B
Indicator square, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension 18 mm x 18 mm
Terminal Diode 1N4007 Part No.
Wiring
diagram
Com-
ponent
Layout
Plug-interminal 51-050.002 4
Solderingterminal 51-050.005 4
Universal terminal 51-051.006 3 27
1 51-703.006 1 27
2 51-704.006 2 27
Wiring diagrams
Wiring diagram 1 Wiring diagram 2 Wiring diagram 3 Wiring diagram 4
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26
23
10.5
1.5 ... 6
32 3
B
C
A
18min.
24min.
18x24
18x18/Ø18
18min.
15+0.1
0
Ø16.2+0.2
0
Ø16.2+0.2
0
1.7 0
-
0.1
b+
a-
3
2
b+
a-
3
2
1
4
b+
a-
x2+
x1-
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
Raised design
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82
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92
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10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Indicator rectangular, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension 24 mm x 18 mm
Terminal Diode 1N4007 Part No.
Wiring
diagram
Com-
ponent
Layout
Plug-interminal 51-040.002 4
Solderingterminal 51-040.005 4
Universal terminal 51-041.006 3 27
1 51-701.006 1 27
2 51-702.006 2 27
Wiring diagrams
Wiring diagram 1 Wiring diagram 2 Wiring diagram 3 Wiring diagram 4
Raised design
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61
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26
23
10.5
1.5 ... 6
32 3
B
C
A
18min.
24min.
18x24
18x18/Ø18
18min.
15+0.1
0
Ø16.2+0.2
0
Ø16.2+0.2
0
1.7 0
-
0.1
b+
a-
3
2
b+
a-
3
2
1
4
b+
a-
x2+
x1-
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
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10.16
5.08
7.62
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Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Indicator round, IP65
Equipment consisting of (schematic overview)
Lens Page 653
LED Page 660
Actuator
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
To obtain a complete unit, please select the red
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension Ø 18 mm
Terminal Diode 1N4007 Part No.
Wiring
diagram
Com-
ponent
Layout
Plug-interminal 51-030.002 4
Solderingterminal 51-030.005 4
Universal terminal 51-031.006 3 27
1 51-741.006 1 27
2 51-742.006 2 27
Wiring diagrams
Wiring diagram 1 Wiring diagram 2 Wiring diagram 3 Wiring diagram 4
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10.5
1.5 ... 6
32 3
B
C
A
18min.
24min.
18x24
18x18/Ø18
18min.
15+0.1
0
Ø16.2+0.2
0
Ø16.2+0.2
0
1.7 0
-
0.1
b+
a-
3
2
b+
a-
3
2
1
4
b+
a-
x2+
x1-
Component layouts
Component layout 27
Dimensions [mm]
A = Universal terminal (rear side)
B = Plug-in terminal (rear side)
C = Anti twist device
D = Drilling plan
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10.16
5.08
7.62
18 mm x 18 mm 18 mm x 24 mm
Ø1.0 (6x)
1
24
3
ab
12
34
a
b
10.16
5.08
7.62
Ø1.0 (6x)
14
32
a
b
1
24
3
ab
1
42
3
ab
Ø18 mm
1
24
3
ab
1
42
3
ab
1
42
3
ab
D
B
AC C
C C
Stop switch, IP65
Equipment consisting of (schematic overview)
Actuator
Anti-twistring
Fixing nut
Each Part Number listed below includes all the
black components shown in the 3D-drawing.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
General information
• Marking arrows
Actuator, Front dimension Ø 24,5 mm
Contacts Terminal Lens colour Switching system Part No.
Wiring
diagram
2 NC Universal terminal Red Low-level element 51-252.026 292
Universal terminal Black Low-level element 51-252.0260 292
Universal terminal Yellow Low-level element 51-252.0264 292
Universal terminal Green Low-level element 51-252.0265 292
Universal terminal Blue Low-level element 51-252.0266 292
Universal terminal Grey Low-level element 51-252.0268 292
1 NC / 1 NO Plug-interminal Red Snap-action switching element 51-253.022 289
Plug-interminal Black Snap-action switching element 51-253.0220 289
Plug-interminal Yellow Snap-action switching element 51-253.0224 289
Plug-interminal Green Snap-action switching element 51-253.0225 289
Plug-interminal Blue Snap-action switching element 51-253.0226 289
Plug-interminal Grey Snap-action switching element 51-253.0228 289
Universal terminal Red Low-level element 51-253.026 293
Universal terminal Black Low-level element 51-253.0260 293
Universal terminal Yellow Low-level element 51-253.0264 293
Universal terminal Green Low-level element 51-253.0265 293
Universal terminal Blue Low-level element 51-253.0266 293
Universal terminal Grey Low-level element 51-253.0268 293
Solderingterminal Red Snap-action switching element 51-256.025 289
Solderingterminal Black Snap-action switching element 51-256.0250 289
Solderingterminal Yellow Snap-action switching element 51-256.0254 289
Solderingterminal Green Snap-action switching element 51-256.0255 289
Solderingterminal Blue Snap-action switching element 51-256.0256 289
Solderingterminal Grey Snap-action switching element 51-256.0258 289
1 NC Universal terminal Red Low-level element 51-256.026 291
Universal terminal Black Low-level element 51-256.0260 291
Contacts: NC = Normally closed, NO = Normally open
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27.6
24 3
1 ... 3
18.8
26.3
19
B
A
C
NJO
NJO
±
Contacts Terminal Lens colour Switching system Part No.
Wiring
diagram
1 NC Universal terminal Yellow Low-level element 51-256.0264 291
Universal terminal Green Low-level element 51-256.0265 291
Universal terminal Blue Low-level element 51-256.0266 291
Universal terminal Grey Low-level element 51-256.0268 291
2 NC / 2 NO Solderingterminal Red Snap-action switching element 51-259.025 290
Solderingterminal Black Snap-action switching element 51-259.0250 290
Solderingterminal Yellow Snap-action switching element 51-259.0254 290
Solderingterminal Green Snap-action switching element 51-259.0255 290
Solderingterminal Blue Snap-action switching element 51-259.0256 290
Solderingterminal Grey Snap-action switching element 51-259.0258 290
Contacts: NC = Normally closed, NO = Normally open
Wiring diagrams
Wiring diagram 289 Wiring diagram 290 Wiring diagram 291 Wiring diagram 292 Wiring diagram 293
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I
31
24
I
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1
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1
2
3
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1
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3
4
Lens square, raised design
Product attributes Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No.
Plastic Smokey black transparent ush illuminative 15,3 mm x 15,3 mm 51-953.1
Plastic Red transparent ush illuminative 15,3 mm x 15,3 mm 51-953.2
Plastic Orange transparent ush illuminative 15,3 mm x 15,3 mm 51-953.3
Plastic Yellow transparent ush illuminative 15,3 mm x 15,3 mm 51-953.4
Plastic Green transparent ush illuminative 15,3 mm x 15,3 mm 51-953.5
Plastic Blue transparent ush illuminative 15,3 mm x 15,3 mm 51-953.6
Plastic Colourless transparent ush illuminative 15,3 mm x 15,3 mm 51-953.7
Not recommended for lm insert Plastic Red translucent ush illuminative 15,3 mm x 15,3 mm 51-951.2
Plastic Orange translucent ush illuminative 15,3 mm x 15,3 mm 51-951.3
Plastic Yellow translucent ush illuminative 15,3 mm x 15,3 mm 51-951.4
Plastic Green translucent ush illuminative 15,3 mm x 15,3 mm 51-951.5
Plastic Blue translucent ush illuminative 15,3 mm x 15,3 mm 51-951.6
Plastic White translucent ush illuminative 15,3 mm x 15,3 mm 51-951.9
Plastic Black opaque ush non illuminative 15,3 mm x 15,3 mm 51-951.0
Plastic Grey opaque ush non illuminative 15,3 mm x 15,3 mm 51-951.8
Plastic Red transparent concave illuminative 15,3 mm x 15,3 mm 51-954.2
Plastic Orange transparent concave illuminative 15,3 mm x 15,3 mm 51-954.3
Plastic Yellow transparent concave illuminative 15,3 mm x 15,3 mm 51-954.4
Plastic Green transparent concave illuminative 15,3 mm x 15,3 mm 51-954.5
Plastic Blue transparent concave illuminative 15,3 mm x 15,3 mm 51-954.6
Plastic Colourless transparent concave illuminative 15,3 mm x 15,3 mm 51-954.7
Components
www.eao.com
On our website you can download technical data, assembly instructions,
catalogs, brochures and much more.
EAO Downloads.
www.eao.com/downloads
EAO creates possibilities. Since 1947.
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Lens rectangular, raised design
Product attributes Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No.
Plastic Smokey black transparent ush illuminative 15,3 mm x 21,5 mm 51-903.1
Plastic Red transparent ush illuminative 15,3 mm x 21,5 mm 51-903.2
Plastic Orange transparent ush illuminative 15,3 mm x 21,5 mm 51-903.3
Plastic Yellow transparent ush illuminative 15,3 mm x 21,5 mm 51-903.4
Plastic Green transparent ush illuminative 15,3 mm x 21,5 mm 51-903.5
Plastic Blue transparent ush illuminative 15,3 mm x 21,5 mm 51-903.6
Plastic Colourless transparent ush illuminative 15,3 mm x 21,5 mm 51-903.7
Not recommended for lm insert Plastic Red translucent ush illuminative 15,3 mm x 21,5 mm 51-901.2
Plastic Orange translucent ush illuminative 15,3 mm x 21,5 mm 51-901.3
Plastic Yellow translucent ush illuminative 15,3 mm x 21,5 mm 51-901.4
Plastic Green translucent ush illuminative 15,3 mm x 21,5 mm 51-901.5
Plastic Blue translucent ush illuminative 15,3 mm x 21,5 mm 51-901.6
Plastic White translucent ush illuminative 15,3 mm x 21,5 mm 51-901.9
Plastic Black opaque ush non illuminative 15,3 mm x 21,5 mm 51-901.0
Plastic Grey opaque ush non illuminative 15,3 mm x 21,5 mm 51-901.8
Plastic Red transparent concave illuminative 15,3 mm x 21,5 mm 51-904.2
Plastic Orange transparent concave illuminative 15,3 mm x 21,5 mm 51-904.3
Plastic Yellow transparent concave illuminative 15,3 mm x 21,5 mm 51-904.4
Plastic Green transparent concave illuminative 15,3 mm x 21,5 mm 51-904.5
Plastic Blue transparent concave illuminative 15,3 mm x 21,5 mm 51-904.6
Plastic Colourless transparent concave illuminative 15,3 mm x 21,5 mm 51-904.7
Lens round, raised design
Product attributes Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No.
Plastic Smokey black transparent ush illuminative Ø 15,8 mm 51-933.1
Plastic Red transparent ush illuminative Ø 15,8 mm 51-933.2
Plastic Yellow transparent ush illuminative Ø 15,8 mm 51-933.4
Plastic Green transparent ush illuminative Ø 15,8 mm 51-933.5
Plastic Blue transparent ush illuminative Ø 15,8 mm 51-933.6
Plastic Colourless transparent ush illuminative Ø 15.8 mm 51-933.7
Not recommended for lm insert Plastic Red translucent ush illuminative Ø 15,8 mm 51-931.2
Plastic Yellow translucent ush illuminative Ø 15,8 mm 51-931.4
Plastic Blue translucent ush illuminative Ø 15,8 mm 51-931.6
Plastic White translucent ush illuminative Ø 15,8 mm 51-931.9
Plastic Black opaque ush non illuminative Ø 15,8 mm 51-931.0
Plastic Grey opaque ush non illuminative Ø 15,8 mm 51-931.8
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Lens square, flush design
Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No.
Plastic Smokey black transparent ush illuminative 18 mm x 18 mm 61-9671.1
Red transparent ush illuminative 18 mm x 18 mm 61-9671.2
Orange transparent ush illuminative 18 mm x 18 mm 61-9671.3
Yellow transparent ush illuminative 18 mm x 18 mm 61-9671.4
Green transparent ush illuminative 18 mm x 18 mm 61-9671.5
Blue transparent ush illuminative 18 mm x 18 mm 61-9671.6
Colourless transparent ush illuminative 18 mm x 18 mm 61-9671.7
Black opaque ush non illuminative 18 mm x 18 mm 61-9771.0
White translucent ush non illuminative 18 mm x 18 mm 61-9771.9
Lens rectangular, flush design
Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No.
Plastic Smokey black transparent ush illuminative 18 mm x 24 mm 61-9681.1
Red transparent ush illuminative 18 mm x 24 mm 61-9681.2
Orange transparent ush illuminative 18 mm x 24 mm 61-9681.3
Yellow transparent ush illuminative 18 mm x 24 mm 61-9681.4
Green transparent ush illuminative 18 mm x 24 mm 61-9681.5
Blue transparent ush illuminative 18 mm x 24 mm 61-9681.6
Colourless transparent ush illuminative 18 mm x 24 mm 61-9681.7
Black opaque ush non illuminative 18 mm x 24 mm 61-9781.0
White translucent ush non illuminative 18 mm x 24 mm 61-9781.9
Lens round, flush design
Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No.
Plastic Smokey black transparent ush illuminative Ø 19,7 mm 61-9642.1
Red transparent ush illuminative Ø 19,7 mm 61-9642.2
Orange transparent ush illuminative Ø 19,7 mm 61-9642.3
Yellow transparent ush illuminative Ø 19,7 mm 61-9642.4
Green transparent ush illuminative Ø 19,7 mm 61-9642.5
Blue transparent ush illuminative Ø 19,7 mm 61-9642.6
Colourless transparent ush illuminative Ø 19,7 mm 61-9642.7
Components
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Lens plastic with symbol
Lens material Lens colour Lens optics Lens shape Lens illumination Symbol Dimensions Part No.
Plastic Red transparent ush illuminative Ring Ø 19,7 mm 61-9643.201
Orange transparent ush illuminative Ring Ø 19,7 mm 61-9643.301
Yellow transparent ush illuminative Ring Ø 19,7 mm 61-9643.401
Green transparent ush illuminative Ring Ø 19,7 mm 61-9643.501
Blue transparent ush illuminative Ring Ø 19,7 mm 61-9643.601
Colourless transparent ush illuminative Ring Ø 19,7 mm 61-9643.701
Red transparent ush illuminative ON/OFF Ø 19,7 mm 61-9643.202
Green transparent ush illuminative ON/OFF Ø 19,7 mm 61-9643.502
Blue transparent ush illuminative ON/OFF Ø 19,7 mm 61-9643.602
Colourless transparent ush illuminative ON/OFF Ø 19,7 mm 61-9643.702
Red transparent ush illuminative Standby Ø 19,7 mm 61-9643.203
Green transparent ush illuminative Standby Ø 19,7 mm 61-9643.503
Blue transparent ush illuminative Standby Ø 19,7 mm 61-9643.603
Colourless transparent ush illuminative Standby Ø 19,7 mm 61-9643.703
Additional information
• The silvery coat is being applied on the lens (screen print) with an additional protective lacquer. Further
information see Technical data
Lens metal
Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No.
Aluminium Black opaque ush non illuminative Ø 19,7 mm 61-9841.0
Red opaque ush non illuminative Ø 19,7 mm 61-9841.2
Gold opaque ush non illuminative Ø 19,7 mm 61-9841.4
Olive green opaque ush non illuminative Ø 19,7 mm 61-9841.5
Blue opaque ush non illuminative Ø 19,7 mm 61-9841.6
Nature opaque ush non illuminative Ø 19,7 mm 61-9841.8
Black opaque convex non illuminative Ø 19,7 mm 61-9842.0
Red opaque convex non illuminative Ø 19,7 mm 61-9842.2
Olive green opaque convex non illuminative Ø 19,7 mm 61-9842.5
Nature opaque convex non illuminative Ø 19,7 mm 61-9842.8
Additional information
• The colour of anodised aluminium parts can vary due to technical production reasons
Lens metal with spot
Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No.
Aluminium Black opaque ush illuminative Ø 19,7 mm 61-9841.0A
Red opaque ush illuminative Ø 19,7 mm 61-9841.2A
Gold opaque ush illuminative Ø 19,7 mm 61-9841.4A
Olive green opaque ush illuminative Ø 19,7 mm 61-9841.5A
Blue opaque ush illuminative Ø 19,7 mm 61-9841.6A
Nature opaque ush illuminative Ø 19,7 mm 61-9841.8A
Additional information
• The colour of anodised aluminium parts can vary due to technical production reasons
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Mushroom-head cap
Lens material Lens colour Lens optics Lens shape Lens illumination Part No.
Plastic Black opaque ush non illuminative 61-9593.0
Red opaque ush non illuminative 61-9593.2
Lever raised design
Lever material Lever colour Lever illumination Lever bar colour Lever shape Part No.
plastic Black illuminative Red short 52-928.20
Black illuminative Orange short 52-928.30
Black illuminative Yellow short 52-928.40
Black illuminative Green short 52-928.50
Black illuminative Blue short 52-928.60
Grey illuminative Red short 52-929.20
Grey illuminative Orange short 52-929.30
Grey illuminative Yellow short 52-929.40
Grey illuminative Green short 52-929.50
Grey illuminative Blue short 52-929.60
Black non illuminative Black short 52-928.0
Black non illuminative White short 52-928.9
Grey non illuminative Grey short 52-929.8
Grey non illuminative White short 52-929.9
Additional information
• With bar and marking dot
Lever flush design
Lever material Lever colour Lever illumination Lever bar colour Part No.
plastic Black illuminative Red 61-9028.20
Black illuminative Yellow 61-9028.40
Black illuminative Green 61-9028.50
Black illuminative Blue 61-9028.60
Grey illuminative Red 61-9029.20
Grey illuminative Orange 61-9029.30
Grey illuminative Yellow 61-9029.40
Black illuminative White 61-9028.9
Black non illuminative Black 61-9028.0
Grey non illuminative Grey 61-9029.8
Additional information
• With bar and marking dot
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Marking plate
Marking plate material Marking plate colour Marking plate optics Marking plate illumination Part No.
Plastic Colourless transparent illuminative 61-9707.7
Additional information
• Can be hot stamped
Front bezel set flush design
Product attributes
Front bezel
material
Front bezel
colour
Front bezel
surface
Mounting cut-
out Dimensions Part No.
For indicator illuminated pushbutton and
keylock switch
Plastic Black 21 mm x 21 mm 24 mm x 24 mm 61-9930.0
Plastic Silver 21 mm x 21 mm 24 mm x 24 mm 61-9930.4
Plastic Black 21 mm x 27 mm 24 mm x 30 mm 61-9931.0
Plastic Silver 21 mm x 27 mm 24 mm x 30 mm 61-9931.4
For indicator, illuminated pushbutton, mu-
shroom-head pushbutton and keylock switch
Aluminium Nature anodised Ø 22.3 mm Ø 25 mm 61-9933.0
Aluminium Black anodised Ø 22.3 mm Ø 25 mm 61-9933.1
Aluminium Red anodised Ø 22.3 mm Ø 25 mm 61-9933.2
Aluminium Gold anodised Ø 22.3 mm Ø 25 mm 61-9933.4
Aluminium Olive anodised Ø 22.3 mm Ø 25 mm 61-9933.5
Aluminium Blue anodised Ø 22.3 mm Ø 25 mm 61-9933.6
Plastic Black Ø 22.3 mm Ø 25 mm 61-9933.10
For selector switch Aluminium Nature anodised Ø 22.3 mm Ø 25 mm 61-9932.0
Aluminium Black anodised Ø 22.3 mm Ø 25 mm 61-9932.1
Aluminium Red anodised Ø 22.3 mm Ø 25 mm 61-9932.2
Aluminium Gold anodised Ø 22.3 mm Ø 25 mm 61-9932.4
Aluminium Olive anodised Ø 22.3 mm Ø 25 mm 61-9932.5
Aluminium Blue anodised Ø 22.3 mm Ø 25 mm 61-9932.6
Plastic Black anodised Ø 22.3 mm Ø 25 mm 61-9932.10
Plastic Black 21 mm x 21 mm 24 mm x 24 mm 61-9936.0
Additional information
• Pitch of the front plate mounting holes must agree with the printed circuit board holes Ø 3.5 mm
• The colour of anodised aluminium parts can vary due to technical production reasons
Front bezel Lever switch
Front bezel material Front bezel colour Dimensions Part No.
Plastic Black 24 mm x 24 mm 52-950.0
Black 26 mm x 26 mm 52-952.0
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Front bezel set mushroom head pushbutton
Front bezel material Front bezel colour Front bezel type Dimensions Part No.
Aluminium Nature ush Ø 40 mm 61-9934.8
Additional information
• The colour of anodised aluminium parts can vary due to technical production reasons
Components
Anti-twist ring
Material Mounting cut-out Part No.
metal Ø 16.2 mm 51-910
Ø 22.3 mm 61-9912.0
{$d=Verdrehsicherungsring}
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Single-LED, T1 3/4 MG
Illumination colour Operating voltage Operation current Lumi. Intensity Dom. Wavelength Part No.
Wiring
diagram
Red 6 V DC +10% 15 mA ±15 % 350 mcd 630 nm 10-2J06.3142 55
12 V AC/DC +10% 7 - 14 mA ±15 % 330 mcd 630 nm 10-2J09.1062 55
24 V AC/DC +10% 7 - 14 mA ±15 % 330 mcd 630 nm 10-2J12.1062 55
28 V AC/DC +10% 7 - 14 mA ±15 % 330 mcd 630 nm 10-2J13.1062 55
48 V AC/DC +10% 4 - 8 mA ±15 % 200 mcd 630 nm 10-2J19.1042 55
Yellow 6 V DC +10% 15 mA ±15 % 300 mcd 587 nm 10-2J06.3144 55
12 V AC/DC +10% 7 - 14 mA ±15 % 280 mcd 587 nm 10-2J09.1064 55
24 V AC/DC +10% 7 - 14 mA ±15 % 280 mcd 587 nm 10-2J12.1064 55
28 V AC/DC +10% 7 - 14 mA ±15 % 280 mcd 587 nm 10-2J13.1064 55
48 V AC/DC +10% 4 - 8 mA ±15 % 180 mcd 587 nm 10-2J19.1044 55
Green 6 V DC +10% 7 mA ±15 % 1050 mcd 525 nm 10-2J06.3145 55
12 V AC/DC +10% 4 - 7 mA ±15 % 1050 mcd 525 nm 10-2J09.1065 55
24 V AC/DC +10% 4 - 7 mA ±15 % 1050 mcd 525 nm 10-2J12.1065 55
28 V AC/DC +10% 4 - 7 mA ±15 % 1050 mcd 525 nm 10-2J13.1065 55
48 V AC/DC +10% 2 - 4 mA ±15 % 600 mcd 525 nm 10-2J19.1045 55
Blue 6 V DC +10% 15 mA ±15 % 680 mcd 470 nm 10-2J06.3146 55
12 V AC/DC +10% 4 - 14 mA ±15 % 650 mcd 470 nm 10-2J09.1066 55
24 V AC/DC +10% 7 - 14 mA ±15 % 650 mcd 470 nm 10-2J12.1066 55
28 V AC/DC +10% 7 - 14 mA ±15 % 650 mcd 470 nm 10-2J13.1066 55
48 V AC/DC +10% 4 - 8 mA ±15 % 400 mcd 470 nm 10-2J19.1046 55
White 6 V DC +10% 6 mA ±15 % 900 mcd x: 0.31 / y: 0.32 nm 10-2J06.3149 55
12 V AC/DC +10% 3 - 6 mA ±15 % 900 mcd x: 0.31 / y: 0.32 nm 10-2J09.1069 55
24 V AC/DC +10% 2,5 - 5 mA ±15 % 750 mcd x: 0.31 / y: 0.32 nm 10-2J12.1069 55
28 V AC/DC +10% 2,5 - 5 mA ±15 % 750 mcd x: 0.31 / y: 0.32 nm 10-2J13.1069 55
48 V AC/DC +10% 2 - 4 mA ±15 % 600 mcd x: 0.31 / y: 0.32 nm 10-2J19.1049 55
Red / Green 24 V AC/DC +10% 15/14 mA ±15 % 600/630 mcd 625 / 525 nm 10-A312.314A 171
Additional information
• Due to high surface temperatures, the series resistor must not be soldered directly to the terminals of the
equipment (use a terminal plate)
• When using AC/DC types with AC operation, slight ickering can occur
• The luminous intensity stated is for when used with DC
• Electricalandopticaldataaremeasuredat25°C
• The specied versions are built with a protection diode (halve wave rectier) in series and the LED
• Luminosity and wave length variations caused by LED manufacturing processes may cause slight diffe-
rences regarding the illumination. The customer has to decide what resistor shall be used to the LED
• Where supply voltages are over 48 V, a voltage-reduction element (external protective series resistor)
must be used.
Dimensions [mm]
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16 max.
Ø6.1 max.
Wiring diagrams
Wiring diagram 55 Wiring diagram 171
Filament lamp
Operating voltage Operation current Part No.
Wiring
diagram
12 V AC/DC 75 mA ±10 % 10-1309.1309 4
14 V AC/DC 80 mA ±10 % 10-1310.1319 4
24 V AC/DC 35 mA ±10 % 10-1312.1229 4
28 V AC/DC 40 mA ±10 % 10-1313.1249 4
36 V AC/DC 30 mA ±10 % 10-1316.1209 4
48 V AC/DC 25 mA ±10 % 10-1319.1199 4
Wiring diagrams
Wiring diagram 4
Components
x2+
x1-
x2+
x1-
x2+
x1-
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Front side
Legend frame
Dimensions Material Colour Surface Mounting type Part No.
30 mm x 50 mm aluminium Black anodised adhesive 61-9980.0
Additional information
• For devices with front dimension Ø 25 mm, ush design
• The colour of anodised aluminium parts can vary due to technical production reasons
Dimensions [mm]
Legend plate
Dimensions Material Colour Surface Mounting type Part No.
14.5 mm x 23.5 mm aluminium Nature anodised adhesive 704.968.0
aluminium Black anodised adhesive 704.968.1
Additional information
• For legend frame Part No.704.968.2 and 704.968.3
• The colour of anodised aluminium parts can vary due to technical production reasons
Blind plug raised design
Dimensions Material Colour Mounting cut-out Part No.
18 mm x 24 mm plastic Black Ø 16.2 mm 51-947.0
18 mm x 18 mm plastic Black Ø 16.2 mm 51-948.0
Ø 18 mm plastic Black Ø 16.2 mm 51-949.0
Additional information
• Blind plugs t also in mounting cut-outs with anti-twist device
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14.5
23.5
4
Ø25
30 0
-
0.1
50
±
0.3
35
±
0.3
Blind plug flush design
Dimensions Material Colour Mounting cut-out Part No.
24 mm x 24 mm plastic Black 21 mm x 21 mm 61-9451.0
24 mm x 30 mm plastic Black 21 mm x 27 mm 61-9452.0
Ø 25 mm plastic Black Ø 25 mm 61-9453.0
Additional information
• Please note that bigger minimum distances are necessary
Dimensions [mm]
for Part No. 61-9453.0
EMC key protection cap
Product attributes Material Colour Part No.
For standard lock: DOM plastic Black 31-985.0
Spare key
Product attributes Material Part No.
Standard lock: DOM 311 metal 31-989.311
Additional information
• Optional lock numbers on request
Master key
Product attributes Material Part No.
For standard lock: DOM 311 … 445 metal 31-989.300
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±
Protective cover raised design
Product attributes Dimensions Material Colour Optics Part No.
Hinged, with means for sealing 18 mm x 18 mm plastic Colourless transparent 51-920
18 mm x 24 mm plastic Colourless transparent 51-925
Dimensions [mm]
Dimensions [mm]
Protective cover flush design
Product attributes Dimensions Material Colour Optics Mounting cut-out Part No.
Hinged, with means for sealing, for device with front
dimension 24 mm x 24 mm
24 mm x 24 mm plastic Colourless transparent 21 mm x 21 mm 61-9921.0
Hinged, with means for sealing, for device with front
dimension 24 mm x 30 mm
30 mm x 24 mm plastic Colourless transparent 27 mm x 21 mm 61-9922.0
Slide by side, without cover locking hole, for device
with front dimension Ø 25 mm
Ø 25 mm plastic Colourless transparent Ø 22.3 mm 61-9924.0
Dimensions [mm]
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10.5
25.5
20
23.5
14.5
32
14.5
32
24
23.5
25.5
10.5
245.5 max.
24
25
12
4.5
245.5 max.
30
25
12
4.5
Ø25
42
29.3 1.5 min.
5.5 max.
10
Rear side
Flat receptacle
Product attributes Material Part No.
2.0 x 0.5 mm plug-in terminal metal 31-945
2.8 x 0.5 mm plug-in terminal metal 31-946
2.8 x 0.5 mm in combination with multi-plug housing metal 51-943.1
Insulation sleeve
Product attributes Material Part No.
For at receptacle 2.0 mm plastic 31-928
For at receptacle 2.8 mm plastic 31-929
Cover plug-in terminals for snap-action switching element 2.8 mm plastic 01-928
Terminal cover
Product attributes Material Part No.
For snap-action switching element plastic 01-929
Side terminal plate empty
Product attributes Dimensions Part No.
5 spaces 62.5 mm x 15 mm x 60 mm 02-912.1
10 spaces 125 mm x 15 mm x 60 mm 02-912.2
15 spaces 187.6 mm x 15 mm x 60 mm 02-912.3
20 spaces 250 mm x 15 mm x 60 mm 02-912.4
Multi-plug housing
Product attributes Part No.
For switching block 51-943.0
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PCB plug-in base
Product attributes Terminal Pins Part No.
Com-
ponent
Layout
For low level switching element PCBterminal Axial 31-940 3
PCBterminal 90° angled 31-941 2
For snap-action switching element 2.8 mm PCBterminal Axial 31-942 4
Additional information
• PCB plug-in base pins right-angle: With the extendable mounting the distance between plug-in base and
PCB can be varied up to 3 mm
Dimensions [mm]
for Part No. 31-940
Dimensions [mm]
for Part No. 31-941
Dimensions [mm]
for Part No. 31-942
Component layouts
Component layout 2
Dimensions [mm]
A = Socket 90° angled
B = Occupancy plan (component side)
C = Occupancy plan diode block
D = Drilling plan (component side)
E = non-metallic
F = Extendable mounting pins
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Ø16.4 4
9.8
2
17.9
6.2
43
17.9
9.6
12.9
9.8
4
1.5
17.8
15.24
17.9
9.6
17.9
7.62
1.271.27
0.85
5 x 2.54
1.27 1.27
Ø1.0 (4x)
Ø1.0 (6x)
9
43
3
42
1
b
b4312a
a
17.9
17.9
9
3
24
1
b
b2314a
a
D
B C
A
E
F
Component layouts
Component layout 3
Dimensions [mm]
A = Axial socket
B = Drilling-/occupancy plan (component side)
C = Drilling-/occupancy plan diode block
D = for central mounting with M2 screw, if desired
E = non-metallic
Component layout 4
Dimensions [mm]
A = Axial socket
B = Drilling-/occupancy plan (component side)
C = non-metallic
D = for central mounting with M2 screw, if desired
Series resistor
Operating voltage Resistance Part No.
110 V AC 2.7 kOhm 02-904.0
125 V AC 3.3 kOhm 02-904.1
145 V AC 4.7 kOhm 02-904.3
240 V AC 10 kOhm 02-904.7
Additional information
• Only for lament lamp 48 VAC, 25 mA
• Due to high surface temperatures, the series resistor must not be soldered directly to the terminals of the
equipment (use a terminal plate)
• Keep to the country specic safety instructions
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5.08
10.16
12.7
7.62
Ø2.1 (1x)
Ø1.0 (1x)
Ø1.0 (6x)
1
2
34
a
b
5.08
10.16
12.7
7.62
Ø2.1 (1x)
Ø1.0 (1x)
Ø1.0 (6x)
1
4
32
a
b
E E
B C
A
DD
7.62
7.62
10.16
7.62
Ø2.1 Ø1.0 (6x)
Ø1.0
14
32
a
b
D
B
A
C
Mounting
Fixing nut
Product attributes Dimensions Material Colour Part No.
Special recommended for keylock switches Ø 16 mm metal Silver 31-991
Standard delivery plastic Black 51-991
Mounting tool
Product attributes Dimensions Material Part No.
For tightening or loosening of the xing nut Ø 16
mm
Ø 16 mm metal 01-907
Dismantling tool
Product attributes Part No.
For dismantling of lens, lens holder and switching element block 51-938
Lens remover
Product attributes Material Part No.
For raised design metal 02-905
For ush design metal / plastic 61-9730.0
Lamp remover
Product attributes Material Part No.
A switching action may occur when replacing the lamp plastic 61-9740.0
Mounting tool
Product attributes Dimensions Material Part No.
For tightening or loosening of the xing nut Ø 16
mm
Ø 16 mm metal 01-907
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Technical data
Actuator with snap-action switching element block (Keylock- and Selector switch 3 positions)
Switching system
Self-cleaning, double-break snap action switching system
1 normally
closed and 1 normally open contact per element.
Material
Material of contact
Gold plated hardsilver
Switch housing
Plastic, heat-resistant and self-extinguishing
Actuator housing
Plastic, self-extinguishing
Mechanical characteristics
Terminals
Soldering terminal which can also be used as plug-in terminal
2.8 x 0.5
mm
Max. wire diameter 2 wires of 1
mm
Max. wire cross-section of stranded cable 2 x 0.75
mm²
Tightening torque
For xing nut max. 0.5
Nm
Actuating torque
0.025
Nm … 0.055 Nm, depending on the number of switching
elements. Measured at the key or lever of the keylock- or selector
switch.
Actuating travel
Keylock-/selector switch actuator with 3 positions
2 x ca. 42° deection momentary action
2 x ca. 90° deection maintained action
Mechanical lifetime
Keylock switch
50 000 cycles of operation
Selector switch
100 000 cycles of operation
Electrical characteristics
Electrostatic discharge (ESD)
≤ 15 KV (Keylock switch)
Thermal current Ith
5 A
Switching voltage and switching current
250 VAC, 5 A (cosφ 0.75)
Electric strength
2500 VAC, 50 Hz, 1 min. between all terminals and earth,
as per IEC 60512-2-11
Protection class
II
Ambient conditions
Storage temperature
– 40 °C … + 85 °C
Operating temperature
– 25 °C … + 55 °C
For selector switches mounted as a block, make sure the heat can
escape freely
Protection degree
Front side, as per IEC 60529
IP65 keylock switch
IP40 selector switch
Approvals
Approbations
CB (IEC 61058-1)
CSA
CQC
ENEC (EN 61058-1)
DNV GL (previously Germanischer Lloyd)
UL
Conformities
CE
2014 / 30 / EC (EMC)
2014 / 35 / EC (LVD)
2011 / 65 / EC (RoHS)
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Technical data
Actuator with low-level switching element
Switching system
This low-level switching element was designed for switching low
powers in electronic circuits. The mechanism assures reliable
switching of loads ranging from a few μA/μV up to 100
mA/ 42 VAC/
DC.
Single-break momentary contact, as normally open or normally
closed with 4 independent points of contact. 2 momentary
contacts
per switching element; combination of normally open and
normally closed is possible.
Special features are the long life, extremely short rebound time and
stable contact resistance.
Material
Material of contact
Gold plated
Switch housing
Plastic, heat-resistant and self-extinguishing
Actuator housing
Plastic, self-extinguishing
Mechanical characteristics
Terminals
The universal terminals permit these units to be mounted on
printed circuit boards (PCB). These terminals can also be used as
soldering or plug-in terminals.
For these terminals we can also supply a plug-in base which, when
soldered on to the board, enables the switch to be plugged in.
Soldering terminal
Max. wire diameter 2 wires à 1
mm
Max. wire cross-section of stranded cable 2 x 0.75
mm²
Plug-in terminal 2.0
mm x 0.5 mm
Tightening torque
For xing nut max. 0.5
Nm
Actuating torque
2.5
Ncm … 5.5 Ncm, measured at the key or lever of the keylock- or
selector switch
Actuating force
1.8
N … 3.5 N
Actuating travel
Illuminated pushbutton 3 mm
Keylock-/selector switch actuator 2 positions
1 x ca. 42° deection momentary action
1 x ca. 90° deection maintained action
Mechanical lifetime
Momentary action 5 million cycles of operation
Maintained action 1 million cycles of operation
Keylock switch 50 000 cycles of operation
Electrical characteristics
Electrostatic breakdown value
≤ 15 KV (Keylock switch)
Switching voltage and switching current
100 mA at 42 VAC/VDC
Electric strength
2500 VAC, 50 Hz, 1 minute between all terminals and earth,
as per IEC 61058-1, part 15
Ambient conditions
Storage temperature
-40 °C … +85 °C
Operating temperature
-25 °C … +55 °C
For indicators and illuminated pushbuttons mounted as a block,
make sure the heat can escape freely.
Protection degree
IP65 front side, as per DIN / EN 60529
Shock resistance
(Single impacts, semi-sinusoidal)
15 g for 11 ms, as per DIN / EN 60512-4-3, DIN / EN 60068-2-27
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Technical data
Actuator with snap-action switching element
Switching system
Self-cleaning, double-break snap action switching system
(withcontact gap 2 x 0.5
mm).
1 normally closed and 1 normally open contact per element.
Snap-action switching elements with soldering terminals at the
sides: up to 4 switching element can be on a pushbutton
(max. 4normally closed and 4 normally open contacts).
Snap-action switching element with axial plug-in terminals 2.8
mm
is not stackable, only 1 switching element can be on a pushbutton.
Material
Material of contact
Gold plated silver
Switch housing
Axial soldering-/plug-in terminal 2.8
mm
Plastic, heat-resistant and self-extinguishing.
Soldering terminal: Plastic
Actuator housing
Plastic, self-extinguishing
Mechanical characteristics
Terminals
Snap-action switching element with tinned soldering terminals
at the sides
Max. wire diameter 2 wires à 1.2
mm
Max. wire cross-section of stranded cable 1 x 1
mm²
Snap-action switching element with axial soldering terminals,
which can also be used as plug-in terminals 2.8 x 0.5
mm
Max. wire diameter 2 wires of 1
mm
Max. wire cross-section of stranded cable 2 of 0.75
mm² or
1 x 1.0
mm²
Tightening torque
For xing nut max. 0.5
Nm
Actuating torque
0.025
Nm … 0.055 Nm, depending on the number of switching
elements. Measured at the key or lever of the keylock- or selector
switch.
Actuating force
1.8
N … 6 N, depending on the number of switching elements
Actuating travel
Illuminated pushbutton 3 mm
Keylock-/selector switch actuator 2 positions
1 x ca. 42° deection momentary action
1 x ca. 90° deection maintained action
Mechanical lifetime
Momentary action 2 million cycles of operation
Maintained action 1 million cycles of operation
Keylock switch 50 000 cycles of operation
Electrical characteristics
Standards
EN / IEC 61058-1
Rated voltage
250 VAC / VDC
Rated current
5 A
Electrostatic discharge (ESD)
≤ 15 KV (Keylock switch)
Thermal current Ith
5 A
The maximum current in continuous operation and at ambient
temperature not exceeding the quoted maximum values.
Switching voltage and switching current
250 VAC, 5 A (ohmic)
250 VAC, 2 A (inductive, cos(phi) = 0.7)
125 VAC, 3 A (inductive, cos(phi) = 0.7)
220 VDC, 0.1 A (inductive, L:R = 30 ms)
110 VDC, 0.2 A (inductive, L:R = 30 ms)
60 VDC, 0.7 A (inductive, L:R = 30 ms)
24 VDC, 2 A (inductive, L:R = 30 ms)
Electric strength
2500 VAC, 50 Hz, 1 minute between all terminals and earth,
as per IEC 61058-1, part 15
Protection class
II
Electrical lifetime
50 000 cycles of operation
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Technical data
Ambient conditions
Storage temperature
–
40 °C … + 85 °C
Service temperature
–
25 °C … + 55 °C
For indicators and illuminated pushbuttons mounted as a block,
make sure the heat can escape freely.
Protection degree
IP65 front side, as per DIN EN 60529
Shock resistance
(Single impacts, semi-sinusoidal)
15
g for 11 ms, as per DIN EN 60512-4-3, DIN EN 60068-2-27
Vibration resistance
(Sinusoidal)
10
g at 10 Hz … 1500 Hz, amplitude 0.75 mm,
as per DIN EN 60512-4-4, DIN EN 60068-2-6
Climate resistance
Standard condition, as per DIN EN 60068-2-30
Changing condition, as per DIN EN 60068-2-14
Approvals
Approbations
CB (IEC 61058-1)
CSA
CQC
ENEC (EN 61058-1)
DNV GL (previously Germanischer Lloyd)
UL
Conformities
CE
2014 / 30 / EC (EMC)
2014 / 35 / EC (LVD)
2011 / 65 / EC (RoHS)
Stop Switch
Switching system
Switching element SE16 with solder terminal
Self-cleaning, double-break snap-action switching system
1
NCcontact and 1 NO contact per switching element.
Available with up to two switching elements (2
NC contact and
2
NO contact)
Switching element SE 2.8
mm with solder-/ plug-in terminal
Self-cleaning, double-break snap-action switching system
(1 NC contact and 1 NO contact)
Low-level switching element with universal terminal
Single-break momentary contact switch system. Two contacts per
switching element with a combination of NC and NO contacts
Material
Actuator housing
Plastic
Lens
Plastic
Actuator
Plastic
Label
Plastic
Switching element
Solder terminal Polyamide (PA 6.6)
Solder-/plug-in interminal Diallyl Phthalate (DAP), Polyamide (PA),
Polysulfone (PSU)
Universal terminal Polysulfone (PSU)
Contact material
Snap action solder terminal gold-plated silver
Snap action plug-in/solder terminal gold-plated silver
Low-level plug-in/solder/PCB terminal gold-plated
Mechanical characteristics
Terminals
Plug-in terminal, 2.8 mm × 0.5 mm
Universal terminal with 2.0 × 0.5 mm
Solder and PCB terminal
Tightening torque
For xing nut max. 0.5 Nm
Actuating force
1.8 … 6 N (depending on the switching element)
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Technical data
EAO reserves the right to alter specications without further notice.
Mechanical lifetime
100
000 cycles of operation
Electrical characteristics
Switching voltage and switching current
Solder terminal
250 VAC, 5 A (ohmic)
24 VDC, 2 A (inductive, L:R = 30 ms)
Plug-in terminal
250 VAC, 5 A (ohmic)
24 VDC, 2 A (inductive, L:R = 30 ms)
Universal terminal
42 VAC / DC, 100 mA
Ambient conditions
Storage temperature
–
40 °C … + 85 °C
Operating temperature
–
25 °C … + 55 °C
Protection degree
IP65 front side
Approvals
Approbations
UL
CSA
CB (IEC 61058-1)
ENEC (EN 61058-1)
Conformities
CE
2006 / 42 / EC (MD)
2011 / 65 / EC (RoHS)
Approvals are not valid for Stop switches with low-level switching
element.
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Marking
General notes
1. Engraving
In addition to the most commonly used world languages, in
DIN1451-3 close spacing, other typefaces are available as Scandi
-
navian, Slavic, Greek, Russian and Polish. Red, blue and black
lenses are lled with white colour. Other colour lenses arelled in
black. Standard height of letters is 2
mm. If the height is not speci-
ed, we will supply 2
mm engraved letters.
2. Hot stamping
For larger series it is worth considering markings by means of hot
stamping. We will pleased to advise you. For letters and gures,
typefaces with 2.5
mm, 3 mm and 4 mm are available.
3. Film inserts
Instead of using engraving the lenses can be tted with transparent
lm inserts, as an alternative. For this purpose, though, it is advis-
ible to use transparent lenses. In the case of use of a smoke-black
lens the tted lm becomes readable only if the lamp is on. The
lm thickness is 0.2 mm.
Important: Consider pushbutton mounting orientation befor specifying
engraving characters!
Front size (Lens) Film insert max. size Height of letters h Number of lines
Number of capital
letters per line
(target value)
Number of small
letters per line
(target value) Image
18 x 24 (12.8 x 18.8) 12.7 x 18.7 2.5 3 9 10 B1
3 3 8 8 B1
4 2 5 6 B1
5 2 4 5 B1
6 1 4 4 B1
8 1 3 3 B1
2.5 5 6 7 B2
3 4 5 6 B2
4 3 4 4 B2
5 3 3 3 B2
6 2 2 3 B2
8 1 2 2 B2
18 x 18 (12.8 x 12.8) 12.7 x 12.7 2.5 3 6 7 B3
3 3 5 6 B3
4 2 4 4 B3
5 2 3 3 B3
6 1 2 3 B3
8 1 2 2 B3
Ø 18 (Ø 15.8) Ø 12.8 2.5 3 4-5 5-6 B4
3 3 2-4 3-5 B4
4 2 2-3 3-4 B4
5 2 1-2 2-3 B4
6 1 2 3 B4
8 1 2 2 B4
B1 B2 B4B3
h
Gravur
Film
AB
abc abc
AB
abc
AB
abc
AB
Lenses for indicators and illuminated pushbuttons, raised mounting
All dimensions in mm
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Marking
Front size (Lens) Film insert max. size Height of letters h Number of lines
Number of capital
letters per line
(target value)
Number of small
letters per line
(target value) Image
18 x 24 (12.8 x 18.8) 15.1 x 21 2.5 4 10 11 B1
3 3 8 9 B1
4 2 6 7 B1
5 2 5 6 B1
6 1 4 5 B1
8 1 3 3 B1
2.5 5 7 8 B2
3 4 6 7 B2
4 3 5 5 B2
5 3 4 4 B2
6 2 3 3 B2
8 2 2 2 B2
18 x 18 (12.8 x 12.8) 15.1 x 15.1 2.5 4 7 8 B3
3 3 6 7 B3
4 2 5 5 B3
5 2 4 4 B3
6 1 3 3 B3
8 1 2 2 B3
Ø 18 (Ø 15.8) Ø 15.6 2.5 3 6-7 6-8 B4
3 3 4-6 5-7 B4
4 2 4 4-5 B4
5 2 2-3 3 B4
6 1 2 2-3 B4
8 1 2 2-3 B4
B1 B2 B4B3
h
Gravur
Film
AB
abc abc
AB
abc
AB
abc
AB
Lenses for indicators and illuminated pushbuttons, raised mounting
All dimensions in mm
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Application guidelines
Suppressor circuits
When switching inductive loads such as relays, DC motors, and
DC solenoids, it is always important to absorb surges (e.
g. with a
diode) to protect the contacts. When these inductive loads are
switched off, a counter emf can severely damage switch contacts
and greatly shorten lifetime.
Fig. 1 shows an inductive load with a free-wheeling diode connec
-
ted in parallel. This free-wheeling diode provides a path for the
inductor current to ow when the current is interrupted by the
switch. Without this free-wheeling diode, the voltage across the
coil will be limited only by dielectric breakdown voltages of the
circuit or parasitic elements of the coil. This voltage can be kilo
-
volts in amplitude even when nominal circuit voltages are low
(e. g. 12 VDC) see Fig. 2.
The free-wheeling diode should be chosen so that the reverse
breakdown voltage is greater than the voltage driving the induc
tive
load. The DC blocking voltage (VR) of the free-wheeling diode can
be found in the datasheet of a diode. The forward current should
be equal or greater than the maximum current owing through the
load.
To get an efficient protection, the free-wheeling diode must be connected as
close as possible to the inductive load!
Several hundred
to several
thousend volts
ON OFF
0
e = L di
dt
__
V
DC
Switch
Free-wheeling
diode
Inductive
load
Counter EMF
over load without free-wheeling diode
Fig. 2
Switching with inductive load
Fig. 1
+
_
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Mouser Electronics
Authorized Distributor
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51-401.036K 51-165.0 51-931.5 51-373.022D 51-901.6 51-931.4 51-041.006 51-901.8 51-388.022D 51-953.4
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51-931.2 51-933.7 51-933.4 51-901.0 51-938 51-901.4 51-904.4 51-901.5 51-951.3 51-275.0 51-466.036 51-
255.025K 51-196.025K 51-052.0 51-296.025K 51-414.036K 51-472.036 51-141.025D2 51-476.036 51-141.022K
51-297.025K 51-256.025K 51-195.012K 51-198.025K 51-445.036K 51-442.036K 51-415.036D 51-412.036K 51-
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