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300 & 400 series
Miniature pushbutton switches
Distinctive features and specifications
B
Dry circuit through power ratings .
Compact size.
Panel, panel & PC and PC mounting models.
MATERIALS
• Base: diallyphthalate (DAP)
• Actuator: nylon
• Bushing: nickel plated brass
• Contacts
B: Gold
Q: Coin silver
• Terminal seal: epoxy
• Spring bracket: stainless steel
• Support bracket: brass or tin
plated steel
• Bezel and cap: nylon
ELECTRICAL SPECIFICATIONS
• Max. current/voltage rating with resistive load :
- gold over nickel plated brass contacts : 0.4VA - 20V Max.
- coin silver contacts : 1A 125VAC or 28VDC, 0.5A 250VAC, 3A
125VAC or 28VDC,
• Initial contact resistance : 10 milliohms max. at 3VDC, 0.1 Amp.
• Insulation resistance : 10,000 MΩ min.
• Dielectric strength : 1,000 Vrms min at sea level.
• Electrical life :
GENERAL SPECIFICATIONS
•Operating temperature : -30°C to +85°C
AGENCY APPROVAL
Availability: All models with
coin silver contacts (Q) only.
Marking::To order switches
marked UL, complete
appropriate box on ordering
format.
Model Contacts Rating Number of cycles
300 (Q) coin silver 1A 125VAC or 28 VDC 250,000
300 (Q) coin silver 3A 125VAC or 28VDC 10,000
300 (B) gold 0.4VA max. at 20V 250,000
400 (Q) coin silver 1A 125VAC or 28 VDC 40,000
400 (Q) coin silver 3A 125VAC or 28VDC 10,000
400 (B) gold 0.4VA max. at 20V 40,000
APEM www.apem.com
300 & 400 series
Miniature pushbutton switches
Overview
B
E
ABOUT THIS SERIES
On the following pages, you will find successively :
- model structure of switches
- options in the same order as in above chart
Dimensions : first dimensions are in mm while inches are shown as bracketed numbers.
NOTICE : please note that not all combinations of above numbers are available. Refer to the following pages for further
information.
Agency approval
N
No
o a
ap
pp
pr
ro
ov
va
al
l
/UL UL Approval
(Q contact material only)
Actuators
Standard
SLong (see dwg. - specify for
all models with bezels-not
available for 306)
Bushing
None
T1 Standard 15/32” thd’d.
(see dwg - 301, 303 &
305 only).
Terminations
ZSolder lug
CPrinted circuit board
V-1 Right angle p.c.
terminals for 301,
302, 305, 401 & 402
only. (see dwg)
Contact material
BGold
QCoin Silver
SERIES
301
302
305
306
401
402
Cap Color
2Black
6
6Red
Sealing
EEpoxy
Bezel color
2Black
8
8White
Bezel & Cap
J81 Snap-in
Normally open no overtravel: 302
Normally open with overtravel: 301
Normally open with greater overtravel: 305
B
APEM www.apem.com
300 & 400 series
Miniature pushbutton switches
Terminations
• Solder lug or straight PC
terminals
• Epoxy sealed terminals standard
5.61
(.221)
0.38
(.015)
5.13
(.202)
Ø9.40
(Ø.370)
1/4-40 UNS
Ø4.06
(Ø.160)
10.90
(.429)
6.35
(.250)
4.52
(.178)
4.52
(.178)
6.35
(.250)
5.61
(.221)
0.38
(.015)
5.13
(.202)
10.90
(.429)
Ø4.06
(Ø.160)
Ø9.40
(Ø.370)
1/4-40 UNS
5.61
(.221)
8.10
(.319)
6.35
(.250)
3.72
(.146)
1/4-40 UNS
Ø4.06
(Ø.160)
0.38
(.015)
5.13
(.202)
Ø9.40
(Ø.370)
4.80
(.189)
6.86
(.271)
1.17
(.046)
2.54
(.100)
1.02
(.040)
2.03
(.080)
5.59
(.221)
2.54
(.100) 1.27
(.050)
Total travel: 2.7 (.110)
Over travel: 0.51 (.020)
Actuation force: 8.5oz. `4oz.
Total travel: 1.52 (.060)
Actuation force: 10oz. `4oz.
Total travel: 2.7 (.110)
Over travel: 1.20 (.075)
Actuation force: 8oz. `4oz.
Z
Solder lug terminals
301ZQE Normaly Open
301ZBE Normaly Open
PC terminals
301CQE Normaly Open
301CBE Normaly Open
C
Solder lug terminals
302ZQE Normaly Open
302ZBE Normaly Open
PC terminals
302CQE Normaly Open
302CBE Normaly Open
Solder lug terminals
305ZQE Normaly Open
305ZBE Normaly Open
PC terminals
305CQE Normaly Open
305CBE Normaly Open
Normally open with sealed contact area: 306
Right angle terminal with bracket
Snap-in bezel
Normally open snap-action mechanism:400
B
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300 & 400 series
Miniature pushbutton switches
Ø4.06
(Ø.160)
5.60
(.221)
11.91
(.469)
6.35
(.250)
5.28
(.208)
Ø9.53
(Ø.375)
5.13
(.202)
0.38
(.015)
1/4-40 UNS
5/16-24 UNF
0.38
(.015)
5.13
(.202)
5.61
(.221)
20.00
(.787)
6.35
(.250)
8.92
(.351)
Ø9.40
(Ø.370)
Ø4.06
(Ø.160)
9.40
(.370)
5.08
(.200)
1.17
(.046)
D
C
0.41
(.016)
B
6.15
(.242)
9.40
(.370)
4.70
(.185)
3.18
(.125)
5.08
(.200)
C
D
Ø1.91
(Ø.075)
Total travel: 8.74 (.310)
Over travel: 6.35 (.250)
Actuation force at full travel: 9oz.
401 ON - OFF
402 MOM - OFF Pretravel: 0.66 (.026)
Actuation travel: 2.60 (.106)
Total traval: 3.48 (.137)
Over travel: 0.79 (.031)
Actuation force: 22oz.
Model no. Dim A Dim B
301 2.74 (.108) 23.60 (.929)
302 2.16 (.085) 20.75 (.817)
305 2.74 (.108) 23.60 (.929)
401 3.68 (.145) 29.00 (1.142)
402 3.68 (.145) 29.00 (1.142)
Model no. Dim B Dim C Dim D
301 11.15 (.439) 13.97(.550) 16.51 (.650)
302 8.30 (.327) 11.43 (.450) 13.97(.550)
305 11.15 (.439) 13.97(.550) 16.51 (.650)
401 16.59 (.653) 19.05 (.750) 21.59 (.850)
402 16.59 (.653) 19.05 (.750) 21.59 (.850)
Solder lug terminals
306ZQE Normaly Open
306ZBE Normaly Open
PC terminals
306CQE Normaly Open
306CBE Normaly Open
For complete part number, and full list of options see part number breakdown at the beginning of this section
Panel cut-outs
Option S long actuator
T1 option with 15/32 bushing
300 & 400 series
Miniature pushbutton switches
B
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(.655)(.220)
(.370 DIA)
(.015)
(.209)
Ø9.40
0.40
5.30
16.655.60
EPOXY
(.365)
(.330 DIA)
(15/32-32UNS)
Ø11.90-32UNS
Ø8.40
9.25
A
301 & 305 302 401 & 402
6.10
(.241)
1/4-40 NS
5.28
(.209)
1/4-40 NS
6.81
(.269)
1/4-40 NS
4.78
(.188)
4.78
(.188)
Ø4.06
(Ø.160) Ø4.06
(Ø.160)
Ø4.06
(Ø.160)
Ø11.89
(Ø.468)
1/4” threaded
bushings
6.35
(.251)
15/32” threaded
bushings
13.00
(.512)
15.24
(.600)
R0.13
(R.005)
MAX.
Snap-in bezel
Model no. Dim A
301 6.35 (.250)
305 6.35 (.250)
T1 option availible only for 301 and 305 models
UL option
UL For power circuits - coin silver
RATING: 0.5 Amps at 125 VAC (75% power factor).
Underwriter Laboratories file no. E66367. Note - applicable only to terminations with coin
silver contacts (Q option).