Lighted Pushbutton Switch A3A
Compact Switch Unit Allows Signal and
Power Switching in the Same Model
Capable
of switching within the range 1mA 5VDC to
6A 125VAC.
Mounting direct to PCB, or panel mounting using
appropriate bezel.
Requires only 14.5mm behind panel depth.
Options include:
– Round or Square
– Momentary or Latching
– Illuminated or Non–illuminated
Ordering Information
A3A j1 –9 j2 j3 1–00 j4
j 1 Pushbutton Shape
Code Shape
ASquare
TRound
j 2 Terminals
Code Type
0Solder
1PCB
j 3 Action
Code Action
KMomentary
LAlternate
j 4 Pushbutton
Code Colour
T
ype Type
ER Red Illuminated
EY Yellow Illuminated
EG Green Illuminated
LGrey Non–illuminated
RRed Non–illuminated
YYellow Non–illuminated
GGreen Non–illuminated
ABlue Non–illuminated
BBlack Non–illuminated
Specifications
LED Ratings
Absolute Maximum
Characteristic Unit Value
Reverse
V
oltage VR4V
Forward Current
IF25mA
Permissable loss PD70mW
Operating T
emp TOPR
–20 to + 75 C
Storage T
emp TSTO
–30 to + 100 C
Contact Ratings
Voltage
(V)
Current (A)
(V) Resistive Lamp Inductive Motor
125 AC
6 1 2 1
250 AC
2 0.5 1 0.5
8 DC 4 1 2 1
14 DC 4 1 2 1
30 DC 4 1 1.5 1
125 DC
0.4 0.05 0.4 0.05
250 DC
0.4 0.03 0.2 0.03
Note:
Min. permissible load 1mA 5VDC
LED Ratings
Standard Ratings
Characteristic Unit Condition Typical Max
Forward
voltage
VFIF
= 15mA
2.05V 2.8V
Reverse current IRVR
= 4V
– 100mA
Back
Characteristics
Insulation
resistance
100MΩ
min. (at 500VDC)
Dielectric strength
600 V
AC, 50/60Hz for 1 minute between terminals of same polarity
2,000V
AC, 50/60Hz for 1 minute between terminals of dif
ferent
polarity and also between each terminal and ground
Vibration
Mechanical and malfunction durabiltiy:
10 to 55Hz, 1.5mm double amplitude
Shock
Mechanical durability: 500 m/s
2
(approx. 50 G)
Shock
Mechanical
durability:
500
m/s
(a rox
.
50
G)
Mechanical durability: 150 m/s
2
(approx. 15 G)
Ambient temperature
Operating: –10
_
C to 55
_C
Humidity
35 to 85% RH
Life expectancy
Mechanical:
Momentary action type: 1,000,000 operations min.
Alternate action type: 50,000 operations min.
Electrical:
50,000 operations min.
Weight
Approx. 3.2g
Dimensions
Panel cutout
For separate mounting
* Recommended panel thickness: 1 to 1.6 mm
** Flange dimensions:
Round: 12.7 dia.
Square: j 12.7
Flange
Panel
11.5 dia.
Flange
14.5 11.5
+0.2
–0 +0.2
–0
11.5 +0.2
–0
For round
pushbutton
For square
pushbutton
Horizontal
multiple
mounting
15.3 min
11.5 dia
+0.2
–0 11.5
15.3 min
+0.2
–0
3.8 min 11.5
+0.2
–0
Vertical
Multiple
mounting
12.7 min
11.5 dia
+0.2
–0 11.5
15.3 min
+0.3
0
12.7 (n–1) +11.5
+0.2
–0
Note: 1.
Unless otherwise specified, a tolerance of+/– 0.2mm applies to all dimensions.
2. The illustrations below show switches with solder terminals, without flange or leafspring.
Non–lighted Illuminated
15.24
12.7
8.9 dia.
Round pushbutton type
Square pushbutton
8.9
Round pushbutton type
Square pushbutton
12.7
8.9 dia.
15.24
8.9
Mechanical indication
18 12.5
3.5
1.7 0.8 x 2
(21.5)
Two 0.4 thick terminals
18 12.5
3.5
1.7 0.8 x 2 Two 0.3 thick
LED terminals Two 0.4 thick
terminals
(21.5)
Surface illumination
(1.5 x 1.5)
Type High
capacity (SPST–NO)
PCB Terminals
Non–lighted model
1
3.5
0.4t
0.6
1.7
Lighted model
0.6
1.7 0.3t
3.5
1
LED terminals are provided
in the lighted models only
LED
terminals
10.16
4.48
10.16
Mounting
holes
Mounting holes are provided
in the lighted models only.
(0.67)
(1.87)
10.16
(2.54) (2.54)
4.48
(bottom view)
10.16
Four 1. dia.
holes
Type High
capacity (SPST–NO)
Solder terminals
Non–lighted model
Lighted model
LED terminals are provided
in the lighted models only
LED
terminals
10.16
1
3.5
0.4t
1.7 0.8
x 2
1.7 0.3t
3.5
1
0.8 x 2
10.16
4.48
Accessories (Order Separately)
Flange (select according to colour)
Name Shape Classification Model Remarks
Black A3A–251
Flange alone
Light grey
A3A–252
Flange alone
Black A3A–241
Light grey
A3A–242
Flange
Leaf spring
A3A–200
Black A3A–221
Flange and leaf s
p
ring
Light grey
A3A–222
Flange and leaf spring
(one each)
Black A3A–211
()
Light grey
A3A–212
Note: Switch units having solder terminals are supplied with a black flange (appropriately round or square) and a metal leaf spring, used
when panel mounting.
