Lighted Pushbutton Switch
General Purpose and Micro-Voltage/Current
Load Switch
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Requires only 22 mm mounting depth
s
All LEDs, lamps, legends and pushbutton units
A3B
replaceable without tools
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Oil-resistant version (satisfies IP65)
also available, making it ideal for
machine tools subject to oil splashes
Ordering Information
Round
Rectangular
Square
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PUSHBUTTON UNITS
Lighted Switches
Switch Type
LED
Degree of Sealing
IP40
Color
Red
Yellow
Green*
White
Oil-tight IP65
Red
Yellow
Green*
White
Green*
Blue
Green*
Blue
Part Number
Round
A3BT-500R
A3BT-500Y
A3BT-500GY
A3BT-500W
A3BT-510R
A3BT-510Y
A3BT-510GY
A3BT-510W
A3BT-500G
A3BT-500A
A3BT-510G
A3BT-510A
Rectangular
A3BJ-500R
A3BJ-500Y
A3BJ-500GY
A3BJ-500W
A3BJ-510R
A3BJ-510Y
A3BJ-510GY
A3BJ-510W
A3BJ-500G
A3BJ-500A
A3BJ-510G
A3BJ-510A
Square
A3BA-500R
A3BA-500Y
A3BA-500GY
A3BA-500W
A3BA-510R
A3BA-510Y
A3BA-510GY
A3BA-510W
A3BA-500G
A3BA-500A
A3BA-510G
A3BA-510A
Incandescent
Lamps
IP40
Oil-tight IP65
* Note: With the exception of green, all pushbutton units can be used with either LED or incandescent lamps. To avoid an undesirable
hue change with green pushbutton units, use a green LED lamp with a green LED pushbutton and an incandescent lamp with
a green incandescent pushbutton.
A3B
Round
Rectangular
A3B
Square
s
PUSHBUTTON UNITS
Non-Lighted/Mushroom Type Switches
Switch Type
Convex
Degree of Sealing
IP40
Color
Red
Yellow
Green
White
Blue
Black
Red
Yellow
Green
White
Blue
Black
Part Number
Round
A3BT-502R
A3BT-502Y
A3BT-502G
A3BT-502W
A3BT-502A
A3BT-502B
A3BT-512R
A3BT-512Y
A3BT-512G
A3BT-512W
A3BT-512A
A3BT-512B
Rectangular
A3BJ-502R
A3BJ-502Y
A3BJ-502G
A3BJ-502W
A3BJ-502A
A3BJ-502B
A3BJ-512R
A3BJ-512Y
A3BJ-512G
A3BJ-512W
A3BJ-512A
A3BJ-512B
Square
A3BA-502R
A3BA-502Y
A3BA-502G
A3BA-502W
A3BA-502A
A3BA-502B
A3BA-512R
A3BA-512Y
A3BA-512G
A3BA-512W
A3BA-512A
A3BA-512B
LED
Incandescent
Oil-tight IP65
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LAMPS
Part Number
Type
LED Light
Color
Red
Yellow
Green*
White
Incandescent Lamp
5 VDC
A3B-005R
A3B-005Y
A3B-005G
A3B-005W
14 V
A3B-014
12 VDC
A3B-012R
A3B-012Y
A3B-012G
A3B-012W
28 V
A3B-028
24 VDC
A3B-024R
A3B-024Y
A3B-024G
A3B-024W
* Note: With the exception of green, all pushbutton units can be used with either LED or incandescent lamps. To avoid an undesirable
hue change with green pushbutton units, use a green LED lamp with a green LED pushbutton and an incandescent lamp with
a green incandescent pushbutton.
Rectangular
Standard
Rectangular
Large Flange
Rectangular Three-
Direction Barrier
Square
Standard
Round
Standard
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SWITCH UNITS
IP40 Cases
Part Number
Rectangular
Application Contacts
General-
purpose
Switch Action Terminal Standard
Solder
–
–
–
Solder
PCB
Solder
PCB
Solder
PCB
PCB
PCB
Solder
PCB
Note: 1.
2.
3.
4.
2
A3BJ-7011-1
A3BJ-7021-1
A3BJ-7031-1
A3BJ-7041-1
A3BJ-7111-1
A3BJ-7112-1
A3BJ-7121-1
A3BJ-7122-1
A3BJ-7131-1
A3BJ-7132-1
A3BJ-7141-1
A3BJ-7142-1
M2BJ-7001-1
M2BJ-7002-1
Large flange
A3BP-7011-1
A3BP-7021-1
A3BP-7031-1
A3BP-7041-1
A3BP-7111-1
A3BP-7112-1
A3BP-7121-1
A3BP-7122-1
A3BP-7131-1
A3BP-7132-1
A3BP-7141-1
A3BP-7142-1
M2BP-7001-1
M2BP-7002-1
3-dir. barrier
A3BK-7011-1
A3BK-7021-1
A3BK-7031-1
A3BK-7041-1
A3BK-7111-1
A3BK-7112-1
A3BK-7121-1
A3BK-7122-1
A3BK-7131-1
A3BK-7132-1
A3BK-7141-1
A3BK-7142-1
M2BK-7001-1
M2BK-7002-1
SPST-NO + Momentary
SPST-NC
Alternate
DPST-NO + Momentary
Square
Standard
A3BA-7011-1
A3BA-7021-1
A3BA-7031-1
A3BA-7041-1
A3BA-7111-1
A3BA-7112-1
A3BA-7121-1
A3BA-7122-1
A3BA-7131-1
A3BA-7132-1
A3BA-7141-1
A3BA-7142-1
M2BA-7001-1
M2BA-7002-1
Round
Standard
A3BT-7011-1
A3BT-7021-1
A3BT-7031-1
A3BT-7041-1
A3BT-7111-1
A3BT-7112-1
A3BT-7121-1
A3BT-7122-1
A3BT-7131-1
A3BT-7132-1
A3BT-7141-1
A3BT-7142-1
M2BT-7001-1
M2BT-7002-1
DPST-NC
Alternate
Micro-load SPST-NO + Momentary
SPST-NC
Alternate
DPST-NO + Momentary
DPST-NC
Alternate
For indication (without switch unit)
Can be used for both lighted and non-lighted units, except indicator.
Models A3BP and A3BK are available in micro-load and indication types.
These switch units usually are mounted with a nut. However, an optional leaf spring for snap-in mounting is also available.
The switch unit bears UL and CSA markings to indicate the standards by which the switch unit is recognized. The SEV marking
can also be marked on the switch unit if requested.
A3B
IP65 Cases (Oil Tight)
Part Number
Rectangular
Application Contacts
Switch Action Terminal Standard
General-
SPST-NO + Momentary
Solder
A3BJ-7011-3
purpose
SPST-NC
Alternate
Solder
A3BJ-7021-3
DPST-NO + Momentary
DPST-NC
Alternate
Micro-load SPST-NO + Momentary
SPST-NC
Alternate
DPST-NO + Momentary
DPST-NC
Alternate
For indication (without switch unit)
Solder
Solder
Solder
PCB
Solder
PCB
Solder
PCB
Solder
PCB
Solder
PCB
A3BJ-7031-3
A3BJ-7041-3
A3BJ-7111-3
A3BJ-7112-3
A3BJ-7121-3
A3BJ-7122-3
A3BJ-7131-3
A3BJ-7132-3
A3BJ-7141-3
A3BJ-7142-3
M2BJ-7001-3
M2BJ-7002-3
Large flange
A3BP-7011-3
A3BP-7021-3
A3BP-7031-3
A3BP-7041-3
A3BP-7111-3
A3BP-7112-3
A3BP-7121-3
A3BP-7122-3
A3BP-7131-3
A3BP-7132-3
A3BP-7141-3
A3BP-7142-3
M2BP-7001-3
M2BP-7002-3
3-dir. barrier
A3BK-7011-3
A3BK-7021-3
A3BK-7031-3
A3BK-7041-3
A3BK-7111-3
A3BK-7112-3
A3BK-7121-3
A3BK-7122-3
A3BK-7131-3
A3BK-7132-3
A3BK-7141-3
A3BK-7142-3
M2BK-7001-3
M2BK-7002-3
Square
Standard
A3BA-7011-3
A3BA-7021-3
A3BA-7031-3
A3BA-7041-3
A3BA-7111-3
A3BA-7112-3
A3BA-7121-3
A3BA-7122-3
A3BA-7131-3
A3BA-7132-3
A3BA-7141-3
A3BA-7142-3
M2BA-7001-3
M2BA-7002-3
Round
A3B
Standard
A3BT-7011-3
A3BT-7021-3
A3BT-7031-3
A3BT-7041-3
A3BT-7111-3
A3BT-7112-3
A3BT-7121-3
A3BT-7122-3
A3BT-7131-3
A3BT-7132-3
A3BT-7141-3
A3BT-7142-3
M2BT-7001-3
M2BT-7002-3
Note: 1.
2.
3.
4.
Can be used for both lighted and non-lighted pushbutton units, except indicator.
Models A3BP and A3BK are available in micro-load and indication types.
These switch units usually are mounted with a nut. However, an optional leaf spring for snap-in mounting is also available.
The switch unit bears UL and CSA markings to indicate the standards by which the switch unit is recognized. The SEV marking
can also be marked on the switch unit if requested.
Socket
Switch Guard
Dust Cover
Snap-in Mounting
Leaf Spring
Insulation
Cover
Panel Plug
Tightening Tool
Extractor
Legend Plate
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ACCESSORIES
Part
Socket
Remarks
Cannot be used with insulation cover.
Classification
Wire-wrap terminal
PCB terminal
Solder terminal
Part Number
Round
A3BT-5050
A3BT-5060
A3B-3001
A3B-3002
A3BT-3003
A3B-3004
A3PJ-5080
Part Number
Round
A3BT-5201
A3BT-5202
A3BT-5203
Part Number
A3B-4101
A3B-4102
A3B-4103
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ACCESSORIES
Part
Switch Guard
Protective Dust Cover
Snap-in Mounting
Leaf Spring
Insulation Cover
Panel Plug
Tightening Tool
Extractor
Remarks
Cannot be used with protective dust cover.
Cannot be used for A3BP switch unit.
Cannot be used with switch guard.
Cannot be used for A3BP switch unit.
Cannot be used with mounting nut.
Cannot be used with socket.
To reserve a hole cutout on a panel for future mounting.
Convenient for ganged installation. Do not overtighten.
Aids in getting a non-slip grip when removing keytops.
Rectangular
A3BJ-5050
A3BJ-5060
Square
A3BA-5050
A3BA-5060
A3BJ-3003
A3BA-3003
Part
Legend Panel
Remarks
A single legend plate
is included with the
standard unit.
Type
Dust Proof
IP40
Oil-resistant
IP65
Opacity
White
Transparent
Transparent
Rectangular
A3BJ-5201
A3BJ-5202
A3BJ-5203
Square
A3BA-5201
A3BA-5202
A3BA-5203
3
A3B
A3B
Specifications
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CONTACT RATINGS
Type
General purpose load
Micro-voltage/current load
AC Resistant Load
0.5 A, 250 VAC
1 A, 125 VAC
0.1 A, 125 VAC
DC Resistant Load
1A, 30 VDC
0.1 A, 30 VDC
Note: The minimum applicable load is 1 mA at 5 VDC.
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LED RATINGS
Rated Voltage
5 VDC
12 VDC
24 VDC
Rated Current
30 mA
15 mA
10 mA
Operating Voltage
5 VDC
±
5%
12 VDC
±
5%
24 VDC
±
5%
Note: All switch models listed have a built-in current limiting resistor (for use with LED).
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LAMP RATINGS
Rated Voltage
14 V
28 V
Rated Current
40 mA
24 mA
Operating Voltage
12 V
24 V
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APPROVALS
UL (File No. E41515) / CSA (File No. LR45258)
Type
General purpose load
Rating
3 A, 250 VAC
5 A, 125 VAC
1 A, 30 VAC
0.1 A, 125 VAC
0.1 A, 30 VDC
Micro-voltage/current load
SEV (File No. D2.21/407)
Type
—
Rating
5 A, 250 VAC
Note: The rated values approved by each of the safety standards (e.g. UL, CSA) may be different from the performance
characteristics individually defined in this catalog.
4
A3B
A3B
Characteristics
Operating frequency
Mechanical
Electrical
Insulation resistance
Contact resistance
Dielectric strength
General type
Micro-load type
Momentary action type: 120 operations per minute max.
Alternate action type: 60 operations per minute max.
20 operations per minute max.
100 MΩ min. (at 500 VDC)
50 MΩ max. 6-8 VDC at rated current or 1A
100 MΩ max. 6-8 VDC/0.1A
1,000 VAC, 50/60 Hz for 1 minute between terminals of same polarity
2,000 VAC, 50/60 Hz for 1 minute between terminals of different polarity and also
between each terminal and ground
10 to 55 Hz, 1.5 mm double amplitude
500 m/s
2
approx. (50 G)
50 m/s
2
approx. (15 G)
-10° to 55° C
35% to 85% RH
Momentary action type: 1,000,000 operations per min.
Alternate action type: 100,000 operations per min.
See “Characteristic Data”
Approx. 7 g
Vibration
Shock
Ambient temperature
Humidity
Service life
Mechanical/
malfunction durability
Mechanical durability
Malfunction durability
Operating
Mechanical
Electrical
Weight (see note)
Note: The weight indicated is for the lighted type (DPST-NO + DPST-NC).
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CHARACTERISTIC DATA
Applicable load range
Electrical service life
General purpose and
high capacity load
Micro voltage/current load
10
125 VAC resistive load p.f. = 1
Operations (x 10
4
)
10
Voltage (VDC)
10
Zone 0
Zone 1
Zone 2 Zone 3
Zone 4
1
250 VAC resistive load p.f. = 1
5
5 mW
0.1W 0.2W
0.3W
0.1
0.1 0.16
0.5
1
5
10
50 100
500
0
1
2
3
4
5
Current (mA)
Switching Current (A)
Note: The load range shown above is applicable only during the standard conditions.
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OPERATING CHARACTERISTICS
A3Bs -7s
s s
s s s-1
SPST-NO
+
SPST-NC
250 g
30 g
Approx. 3.5 mm
2.5 mm
0.5 mm
DPST-NO
+
DPST-NC
350 g
30 g
Approx. 3.5 mm
2.5 mm
0.5 mm
A3Bs -7s
s s
s s s-3
SPST-NO
+
SPST-NC
400 g
30 g
Approx. 3.5 mm
2.5 mm
0.5 mm
DPST-NO
+
DPST-NC
500 g
30 g
Approx. 3.5 mm
2.5 mm
0.5 mm
5
Contacts
Operating force (OF) max.
Releasing force (RF) min.
Total Travel (TT)
Pretravel (PT) max.
Lock stroke (LTA) min. (see note)
Note: LTA denotes the distance from the free position (FP) to where the actuator locks after it reaches the operating position (OP).
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