Back
Lighted Pushbutton Switch
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
A3A
Ordering Information
A3A
j
1
–9
j
2
j
Code
A
T
Shape
Square
Round
j
3
1–00
j
4
j
4 Pushbutton
Colour Type
Red
Yellow
Green
Grey
Red
Yellow
Green
Blue
Black
Type
Illuminated
Illuminated
Illuminated
Non–illuminated
Non–illuminated
Non–illuminated
Non–illuminated
Non–illuminated
Non–illuminated
Code
ER
EY
EG
L
R
Y
G
A
B
1 Pushbutton Shape
j
2 Terminals
Type
Solder
PCB
Code
0
1
j
3 Action
Action
Momentary
Alternate
Code
K
L
Specifications
LED Ratings
Absolute Maximum
Characteristic
Reverse Voltage
Forward Current
Permissable loss
Operating Temp
Storage Temp
Unit
V
R
I
F
P
D
T
OPR
T
STO
Value
4V
25mA
70mW
–20 to + 75 C
–30 to + 100 C
Contact Ratings
Voltage
(V)
125 AC
250 AC
8 DC
14 DC
30 DC
125 DC
Current (A)
Resistive
6
2
4
4
4
0.4
Lamp
1
0.5
1
1
1
0.05
Inductive
2
1
2
2
1.5
0.4
Motor
1
0.5
1
1
1
0.05
0.03
250 DC
0.4
0.03
0.2
Note:
Min. permissible load 1mA 5VDC
LED Ratings
Standard Ratings
Characteristic
Forward voltage
Reverse current
Unit
V
F
I
R
Condition
I
F
= 15mA
V
R
= 4V
Typical
2.05V
–
Max
2.8V
100mA
Characteristics
Insulation resistance
Dielectric strength
100MΩ min. (at 500VDC)
600 VAC, 50/60Hz for 1 minute between terminals of same polarity
2,000VAC, 50/60Hz for 1 minute between terminals of different
polarity and also between each terminal and ground
Mechanical and malfunction durabiltiy:
10 to 55Hz, 1.5mm double amplitude
Mechanical durability: 500 m/s
2
(a rox. 50 G)
(approx.
Mechanical durability: 150 m/s
2
(approx. 15 G)
Operating: –10_C to 55_C
35 to 85% RH
Mechanical:
Momentary action type: 1,000,000 operations min.
Alternate action type: 50,000 operations min.
Electrical:
50,000 operations min.
Approx. 3.2g
Vibration
Shock
Ambient temperature
Humidity
Life expectancy
Weight
Dimensions
Panel cutout
For separate mounting
Horizontal
multiple
mounting
Panel
15.3 min
+0.2
–0
For round
pushbutton
11.5 dia
+0.2
–0
For square
pushbutton
15.3 min
11.5
+0.2
–0
Flange
Flange
11.5 dia.
14.5
+0.2
–0
3.8 min
11.5
+0.2
–0
11.5
Vertical
Multiple
mounting
11.5
+0.2
–0
11.5 dia
+0.2
–0
15.3 min
11.5
+0.2
–0
* Recommended panel thickness: 1 to 1.6 mm
** Flange dimensions:
Round: 12.7 dia.
Square:
j
12.7
12.7 min
12.7 (n–1) +11.5
+0.3
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.
Illuminated
Round pushbutton type
15.24
Square pushbutton
Round pushbutton type
15.24
Square pushbutton
Non–lighted
12.7
8.9
12.7
8.9
8.9 dia.
8.9 dia.
Mechanical indication
Surface illumination
(1.5 x 1.5)
18
12.5
(21.5)
18
12.5
(21.5)
3.5
1.7
0.8 x 2
Two 0.4 thick terminals
3.5
1.7
0.8 x 2
Two 0.3 thick
LED terminals
Two 0.4 thick
terminals
Type
High capacity (SPST–NO)
Non–lighted model
1
3.5
0.6
1.7
0.4t
Type
High capacity (SPST–NO)
Non–lighted model
1
3.5
0.4t
0.8 x 2
1.7
Lighted model
1
3.5
0.6 0.3t
Lighted model
1
Solder terminals
1.7
3.5
0.3t
0.8 x 2
LED terminals are provided
in the lighted models only
LED terminals
1.7
PCB Terminals
LED terminals are provided
in the lighted models only
LED terminals
10.16
10.16
4.48
10.16
10.16
4.48
Mounting holes
Mounting holes are provided
in the lighted models only.
(0.67)
Four 1. dia.
holes
10.16
4.48
(1.87)
(2.54)
10.16
(2.54)
(bottom view)
Accessories (Order Separately)
Flange (select according to colour)
Name
Shape
Classification
Model
Black
Light grey
Flange alone
Black
Light grey
Flange
Leaf spring
Black
Light grey
Flange and leaf spring
(
(one each)
)
Black
Light grey
Note:
Remarks
A3A–251
A3A–252
A3A–241
A3A–242
A3A–200
A3A–221
A3A–222
A3A–211
A3A–212
Switch units having solder terminals are supplied with a black flange (appropriately round or square) and a metal leaf spring, used
when panel mounting.
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