- OMRON Industrial Automation

Lighted Pushbutton Switch (Square)
A3S
CSM_A3S_DS_E_6_2
Pushbutton Switch Series with
Square 40-mm Body
• Combines miniature design with distinct but soft sense of operation.
• Easy panel mounting from the front and simple lamp replacement
without tools.
Refer to Safety Precautions for All Pushbutton Switches/
Indicators and Safety Precautions on page 18.
List of Models
Lighted Pushbutton Switches
Appearance
Model
Rectangular
A3SJ
Square
A3SA
■ Specifications: Refer to page 12.
■ Dimensions: Refer to page 14.
■ Accessories: Refer to pages 10 to 11.
1
A3S
Model Number Structure
Model Number Legend ..... The model numbers used to order sets are illustrated below. One set comprises the Operation Unit, Lamp,
and Socket Unit. For information on combinations, refer to Ordering Information on pages 3 to 4.
1 - 24E R
(1)
(2)
............ Single screen
Left Right
A 3 S J - 9 0 A 3 - 24E RW
............ Vertical 2-split screen
Left
R
(Red)
(1) Shape of
Operation Unit
Symbol
J
A
Shape
Rectangular
Square
(2) Switch Specifications
Standard Load
Symbol
Operation
Momentary
A
SPDT
B
Alternate
C
Momentary
DPDT
D
Alternate
(3) Screen Pattern
Illumination-only models
Symbol
Right
W
(White)
(4) Lighting Method
LED-lighted Models
Screen pattern
Rated
voltage
5 VDC
12 VDC
24 VDC
Symbol
Single screen
05E
12E
24E
1
(5) Operation Unit Color
For LED
Symbol
R
Y
G
W
Color
Red
Yellow
Green
White *
Vertical 2-split screen
Incandescent
Lamp-lighted Models
Microload
Symbol
Operation
E
Momentary
SPDT
F
Alternate
G
Momentary
DPDT
H
Alternate
• Standard Load
250 VAC, 2 A
125 VDC, 0.4 A
3
• Models with colored illumination
can be ordered individually. Refer
to page 5 for details.
Colored Illumination
Unlit
Lit
White
Color
Rated
voltage
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
Symbol
(rectangular models only)
06
14
28
Incandescent
Lamp-lighted Models
Symbol
R
Y
G
A
W
Color
Red
Yellow
Green
Blue
White *
* The color cap is transparent.
• Microload
125 VAC, 0.1 A
30 VDC, 0.1 A
Minimum applicable load
5 VDC, 1 mA
Momentary operation
...Self-resetting
Alternate operation
...Self-holding
The built-in
LED is colored.
Number of Built-in LEDs and Incandescent Lamps
Model
A3SJ
A3SA
Type
Screen pattern
Single screen
Vertical 2-split
screen
Single screen
LED
2
Incandescent lamp
1
2
2
1
1
Structure of Split-screen Operation Unit
Color cap
Legend plate *
Dispersion plate
Light-separation plate
(2-split screen only)
Single screen
(Rectangular models
and square models)
Vertical 2-split screen
(Rectangular models only)
LED/incandescent
lamp holder
A3SJ
* Not included for the Square Models (A3SA) with
incandescent lamp.
2
A3S
Ordering Information
Ordering as a Set .................The model numbers used to order sets of Units are given in the following tables. One set comprises the
Operation Unit, Lamp, and Socket Unit.
Standard Loads
Single
screen
Rectangular Models
A3SJ
1
Vertical 2-split
screen
1
2
Single screen
Contact type
Operation
Output
Lighting
LED
SPDT
Incandescent
lamp
LED
DPDT
Incandescent
lamp
5 VDC
12 VDC
24 VDC
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
5 VDC
12 VDC
24 VDC
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
Standard load (250 VAC, 2 A; 125 VDC 0.4 A)
Momentary operation
Alternate operation
(Self-resetting)
(Self-holding)
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Operation Unit
color symbol
Enter the desired color
symbol for the Pushbutton
in @.
R (Red)
Y (Yellow)
G (Green)
A (Blue) *
W (White)
* Incandescent lamp only.
Vertical 2-split screen
Contact type
Operation
Output
SPDT
DPDT
Lighting
Standard load (250 VAC, 2 A; 125 VDC 0.4 A)
Momentary operation
Alternate operation
(Self-resetting)
(Self-holding)
LED
24 VDC
[email protected]@
[email protected]@
Incandescent
lamp
28 VDC
[email protected]@
[email protected]@
LED
24 VDC
[email protected]@
[email protected]@
Incandescent
lamp
28 VDC
[email protected]@
[email protected]@
Operation Unit
color symbol
Enter the desired color
symbol for the Pushbutton
in @@.
R (Red)
Y (Yellow)
G (Green)
W (White)
A (Blue) *
* Incandescent lamp only.
Microloads
Single screen
Vertical 2-split screen
Contact type
Operation
Output
Lighting
5 VDC
LED
12 VDC
24 VDC
SPDT
6 VAC/VDC
Incandescent 14 VAC/VDC
lamp
28 VAC/VDC
5 VDC
LED
12 VDC
24 VDC
DPDT
6 VAC/VDC
Incandescent 14 VAC/VDC
lamp
28 VAC/VDC
Microload
(125 VAC, 0.1 A; 30 VDC 0.1 A)
Momentary operation
(Self-resetting)
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
A3SJ-90G1-28 @
Operation
Unit color
symbol
Enter the
desired color symbol
for the
Pushbutton
in @.
R (Red)
Y (Yellow)
G (Green)
A (Blue) *
W (White)
Contact type
Microload
(125 VAC, 0.1 A; 30 VDC 0.1 A)
Operation Momentary operation
(Self-resetting)
Lighting
Output
LED
SPDT
DPDT
24 VDC
[email protected]@
Incandescent 28 VDC
lamp
[email protected]@
LED
[email protected]@
24 VDC
Incandescent 28 VDC
lamp
[email protected]@
Operation
Unit color
symbol
Enter the
desired color symbol
for the
Pushbutton
in @@.
R (Red)
Y (Yellow)
G (Green)
W (White)
A (Blue) *
* Incandescent lamp only.
Individual models: Refer to pages 6 to 9.
■ Specifications: Refer to page 12. ■ Dimensions: Refer to page 14.
(The Pushbutton, Lamp, and Switch can be ordered separately.)
■ Accessories: Refer to pages 10 to 11.
3
A3S
Ordering Information
Ordering as a Set ................. The model numbers used to order sets of Units are given in the following tables. One set comprises the
Operation Unit, Lamp, and Socket Unit.
Standard Loads
Square Models
A3SA
Single
screen
Single screen
Contact type
Operation
Output
Lighting
LED
SPDT
Incandescent
lamp
LED
DPDT
Incandescent
lamp
5 VDC
12 VDC
24 VDC
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
5 VDC
12 VDC
24 VDC
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
Standard load (250 VAC, 2 A; 125 VDC 0.4 A)
Momentary operation
(Self-resetting)
Alternate operation
(Self-holding)
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Operation Unit
color symbol
Enter the desired color
symbol for the Pushbutton
in @.
R (Red)
Y (Yellow)
G (Green)
A (Blue) *
W (White)
* Incandescent lamp only.
Microloads
Single screen
Contact type
Operation
Output
Lighting
LED
SPDT
Incandescent
lamp
LED
DPDT
Incandescent
lamp
5 VDC
12 VDC
24 VDC
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
5 VDC
12 VDC
24 VDC
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
Microload
(125 VAC, 0.1 A; 30 VDC 0.1 A)
Operation Unit
color symbol
Momentary operation
(Self-resetting)
[email protected]
[email protected]
[email protected]
Enter the desired color
[email protected]
symbol for the Pushbutton
[email protected]
in @.
[email protected]
R (Red)
Y (Yellow)
[email protected]
G (Green)
[email protected]
A (Blue) *
[email protected]
W (White)
[email protected]
[email protected]
[email protected]
* Incandescent lamp only.
Individual models: Refer to pages 6 to 9.
■ Specifications: Refer to page 12. ■ Dimensions: Refer to page 14.
(The Pushbutton, Lamp, and Switch can be ordered separately.)
■ Accessories: Refer to pages 10 to 11.
4
A3S
Ordering Information
Illumination-only and Colored-illumination LED Models
Illumination only describes LED models for which the screen color is the same whether the LED is lit or not. The screen simply becomes brighter
when the LED lights.
Example: Red LED
Color cap (red)
Not lit
Red
Legend plate
(transparent)
Display
Lit
Dispersion plate
(milk-white)
Red
LED lamp holder
LED (red)
Colored illumination describes LED models for which the screen color is white when the LED is not lit and changes to the color of
the LED lamp when the LED is lit.
Example: Red LED
Color cap (transparent)
Not lit
White
Legend plate
(transparent)
Pushbutton
Lit
Dispersion plate
(milk-white)
Red
LED lamp holder
LED (red)
Ordering .......................................With colored-illumination models, order the Display (Operation Unit), Lamp, and Socket Unit as shown in the
following table.
Display (Operation Unit)
Single screen
LED
Rectangular
models
A3SJ-5801
Square models
A3SA-5801
Rectangular
models only
A3SJ-5921
2-split screen
Select the LED lamps to suit your desired
coloration from the selection on page 9.
Socket Unit
Select from the Switches on
page 9.
5
A3S
Ordering Information
Ordering Individually ......... Operation Units, Lamps, and Socket Units can be ordered separately. Combinations that are not available as
sets can be created using individual Units. Also, store the parts as spares for maintenance and repairs.
Ordering ....................................... Specify a model number from the following page.
LED-lighted Models
Incandescent Lamp-lighted Models
Operation Unit
Operation Unit
Lamp (LED)
Lamp (Incandescent Lamp)
· DC-only
[email protected]@[email protected]
Socket Unit
Ordering set combinations: Refer to pages 3 to 4.
· Standard lamp
[email protected]@
Socket Unit
■ Specifications: Refer to page 12. ■ Dimensions: Refer to page 14.
■ Accessories: Refer to pages 10 to 11.
6
A3S
Ordering Information
Ordering Individually .........Operation Units, Lamps, and Socket Units can be ordered separately. Combinations that are not available as
sets can be created using individual Units. Also, store the parts as spares for maintenance and repairs.
Operation Unit
LED-lighted Models
(LED is not built in.)
Appearance Rectangular Models
(2 LEDs)
Screen pattern
Single screen
Standard
split
screen
2-split
screen *
Reverse
split
screen
One-color
2-split
screen
Display color
White
Red
Green
Yellow
White/red
White/green
White/yellow
Red/green
Red/yellow
Green/yellow
Red/white
Green/white
Yellow/white
Green/red
Yellow/red
Yellow/green
White/white
Red/red
Green/green
Yellow/yellow
(transparent legend
plate built in)
A3SJ-5801
A3SJ-5802
A3SJ-5803
A3SJ-5805
A3SJ-5901
A3SJ-5902
A3SJ-5904
A3SJ-5905
A3SJ-5907
A3SJ-5909
A3SJ-5911
A3SJ-5912
A3SJ-5914
A3SJ-5915
A3SJ-5917
A3SJ-5919
A3SJ-5921
A3SJ-5922
A3SJ-5923
A3SJ-5925
Square Models
(1 LED)
(transparent legend
plate built in)
A3SA-5801
A3SA-5802
A3SA-5803
A3SA-5805
−
−
−
Note: The color cap is transparent when the display color is white.
* Two-split screen configurations are given with the OMRON surface of the case downward.
Ordering set combinations: Refer to pages 3 to 4.
■ Specifications: Refer to page 12. ■ Dimensions: Refer to page 14.
■ Accessories: Refer to pages 10 to 11.
7
A3S
Ordering Information
Ordering Individually ......... Operation Units, Lamps, and Socket Units can be ordered separately. Combinations that are not available as
sets can be created using individual Units. Also, store the parts as spares for maintenance and repairs.
Operation Unit
Incandescent Lamp-lighted Models
(Incandescent lamp is not built in.)
Appearance Rectangular
Screen pattern
One lamp
Single screen
Standard
split
screen
2-split
screen *
Reverse
split
screen
One-color
2-split
screen
Two lamps
Square
Display color
White
Red
Green
Blue
Yellow
(transparent legend
plate built in)
A3SJ-5301
A3SJ-5302
A3SJ-5303
A3SJ-5304
A3SJ-5305
(Legend plate not
included)
A3SA-5301
A3SA-5302
A3SA-5303
A3SA-5304
A3SA-5305
White
Red
Green
Blue
Yellow
A3SJ-5321
A3SJ-5322
A3SJ-5323
A3SJ-5324
A3SJ-5325
−
White/red
White/green
White/blue
White/yellow
Red/green
Red/blue
Red/yellow
Green/blue
Green/yellow
Blue/yellow
Red/white
Green/white
Blue/white
Yellow/white
Green/red
Blue/red
Yellow/red
Blue/green
Yellow/green
Yellow/blue
White/white
Red/red
Green/green
Blue/blue
Yellow/yellow
A3SJ-5201
A3SJ-5202
A3SJ-5203
A3SJ-5204
A3SJ-5205
A3SJ-5206
A3SJ-5207
A3SJ-5208
A3SJ-5209
A3SJ-5210
A3SJ-5211
A3SJ-5212
A3SJ-5213
A3SJ-5214
A3SJ-5215
A3SJ-5216
A3SJ-5217
A3SJ-5218
A3SJ-5219
A3SJ-5220
A3SJ-5221
A3SJ-5222
A3SJ-5223
A3SJ-5224
A3SJ-5225
−
−
−
Note: The color cap is transparent when the display color is white.
* Two-split screen configurations are given with the OMRON surface of the case downward.
Ordering set combinations: Refer to pages 3 to 4.
■ Specifications: Refer to page 12. ■ Dimensions: Refer to page 14.
■ Accessories: Refer to pages 10 to 11.
8
A3S
Ordering Information
Ordering Individually .........Operation Units, Lamps, and Socket Units can be ordered separately. Combinations that are not available as
sets can be created using individual Units. Also, store the parts as spares for maintenance and repairs.
Lamp
LED Lamp
Operating
voltage
Color
Red
Yellow
Green
White
5 VDC
12 VDC
24 VDC
Model (DC only)
SLL-05ER
SLL-05EY
SLL-05EG
SLL-05EW
Model (DC only)
SLL-12ER
SLL-12EY
SLL-12EG
SLL-12EW
Model (DC only)
SLL-24ER
SLL-24EY
SLL-24EG
SLL-24EW
Note: The A3SJ (M2SJ) requires two LEDs for each Switch. The A3SA (M2SA) requires one LED.
Incandescent Lamp
Lamp type
Operating voltage
5 VAC/VDC
12 VAC/VDC
24 VAC/VDC
Standard lamp
Low-voltage lamp
SLL-06
SLL-14
SLL-28
SLL-06H
SLL-14H
SLL-28H
Note: The low-voltage lamp has an advantage in that it generates less heat.
Switch (common to both LED models and incandescent lamp-lighted models)
Contact type
Standard
load
Microload
Number
of
outputs
Appearance Rectangular
models
Square
models
Selection precautions
Operation
Momentary operation
A3SJ-8010
A3SA-7010
Alternate operation
A3SJ-8020
A3SA-7020
Momentary operation
A3SJ-8030
A3SA-7030
Alternate operation
A3SJ-8040
A3SA-7040
1
Silver
contacts
2
Gold
alloy
contacts
Momentary operation
A3SJ-8050
A3SA-7050
Alternate operation
A3SJ-8060
A3SA-7060
Momentary operation
A3SJ-8070
A3SA-7070
Alternate operation
A3SJ-8080
A3SA-7080
1
2
• Use the Socket Unit in
combination with the same
shape Operation Unit
(rectangular or square).
Example:
For the A3SJ-5801 Rectangular Operation Unit, select
the [email protected]@0
Socket Unit.
• Momentary operation is
self-resetting, and alternate
operation is self-holding (i.e.,
push-on, push-off).
9
A3S
Ordering Information
Accessories, Replacements, and Tools
Accessories for Rectangular Models
Name
Appearance
Classification
Model
Short edge Barriers (1 pair)
A3SA-4001
Short intermediate Barriers
A3SA-4002
Long edge Barriers (1 pair)
A3SJ-4003
Long intermediate Barriers
A3SJ-4004
Barrier
Application precautions
The purpose of a Barrier is to prevent malfunctioning
and to improve design image of the mounting panel.
There is one intermediate Barrier and one pair of
edge Barriers (2 Barriers).
Mount Short Barriers horizontally.
Mount Long Barriers vertically.
Switch Guard
−
A3SJ-5050
Cannot be used with Barrier or Seal Cover.
Seal Cover
−
A3SJ-5060
• Cannot be used with Barrier or Switch Guard.
• Cap material: Vinyl chloride
A3SJ-3002
Use when vertically mounting individual (with Barrier)
or multiple Switches (in standard mounting style and
with Barrier). A Short Mounting Plate is attached to
the Switch; replace it with the long one.
Model
Application precautions
Short Edge Barriers (1 pair)
A3SA-4001
Short Intermediate Barrier
A3SA-4002
The purpose of the Barrier is to prevent malfunctioning and to improve design image of the mounting
panel.
Long
Mounting Plate
1 pair
Accessories for Square Models
Name
Appearance
Classification
Barrier
Switch Guard
−
A3SA-5050
Cannot be used with Barrier or Seal Cover.
Seal Cover
−
A3SA-5060
• Cannot be used with Barrier or Switch Guard.
• Cap material: Vinyl chloride
■ Accessory mounting: Refer to page 19.
10
A3S
Ordering Information
Accessories, Replacements, and Tools
Replacements for Rectangular Models
Name
Appearance
Classification
Model
Application precautions
Wire-wrap terminals
A3SJ-4104
PCB terminals
A3SJ-4105
Solder terminals
A3SJ-4106
Dispersion
plate
Milk-white
A3SJ-5107
−
Color cap
Transparent
White
Red
Green
Blue
Yellow
Transparent
White
Red
Green
Blue
Yellow
A3SJ-5600
A3SJ-5601
A3SJ-5602
A3SJ-5603
A3SJ-5604
A3SJ-5605
A3SJ-5630
A3SJ-5631
A3SJ-5632
A3SJ-5633
A3SJ-5634
A3SJ-5635
• Contact your OMRON representative for color
changes or inscribing.
• If LEDs are to be used, use a color cap that
matches the LED color.
• The blue color cap is only for incandescent lamps.
Socket
Single screen
Single screen
2-split screen
Transparent
A3SJ-4204
Milk-white
A3SJ-4203
Legend plate
• Sockets cannot be used for multiple mounting.
A transparent legend plate is mounted on the
Operation Unit.
Replacements for Square Models
Name
Appearance
Classification
Model
Application precautions
Wire-wrap terminals
A3SA-4101
PCB terminals
A3SA-4102
Solder terminals
A3SA-4103
Dispersion
plate
Milk-white
A3SA-5107
−
Color cap
Transparent
White
Red
Green
Blue
Yellow
A3SA-5600
A3SA-5601
A3SA-5602
A3SA-5603
A3SA-5604
A3SA-5605
• Contact your OMRON representative for color
changes or inscribing.
• If LED colors are to be used, use a color cap that
matches the LED color.
Transparent
A3SA-4204
Milk-white
A3SA-4203
Socket
Legend plate
• Sockets cannot be used for multiple mounting.
A transparent color cap is mounted to a standard
Display. Legend plates cannot be used, however,
with Displays for incandescent lamps.
Tools
Name
Appearance
Extractor
Classification
Model
−
A3PJ-5080
Application precautions
Convenient for extracting the Operation Unit.
■ Accessory mounting: Refer to page 19.
11
A3S
Specifications
Approved Standard Ratings
Characteristics
UL (File No. E41515), CSA (File No. LR45258)
Standard Load:
3 A at 125 VAC
2 A at 250 VAC
0.1 A at 125 VAC
0.1 A at 30 VDC
Microload:
Note: Certification has been obtained for the Switch Unit.
For detailed information on individual products that have received
certification, consult your supplier.
Ratings
For Standard Loads
Non-inductive load (A)
Resistive
Lamp load
load
NC NO NC NO
3
1
0.7
2
0.7
0.5
3
1
3
1
2
1
0.4
0.05
0.2
0.03
Rated
voltage
125 VAC
250 VAC
8 VDC
14 VDC
30 VDC
125 VDC
250 VDC
Inductive load (A)
Inductive
Motor load
load
NC NO NC NO
2
1.5
1
1.5
1
0.7
2
1.5
1.5
1.5
1.5
1
0.4
0.05
0.2
0.03
Note: 1. The above values are for steady-state currents.
2. Inductive load: Power factor = 0.4; time constant = 7 ms.
3. The lamp load has an inrush current of 10 times the steady-state
current.
4. The motor load has an inrush current of 6 times the steady-state
current.
The rated values are for testing conducted under the following conditions.
(1) Ambient temperature: 20±2°C
(2) Ambient humidity: 65% ±5%RH
(3) Operating frequency: 20 times/min
For Microloads
Rating
0.1 A at 30 VDC (resistive load);
0.1 A at 125 VAC (resistive load)
Minimum
applicable load
1 mA at 5 VDC
LED Lamp
Type
Applied
voltage
Rated
voltage
Rated
current
DC only
5 VDC±5%
12 VDC±5%
24 VDC±5%
5 VDC
12 VDC
24 VDC
30 mA
15 mA
12.5 mA
Built-in
limiting
resistance
39 Ω
270 Ω
1300 Ω
Incandescent Lamp
Applied
voltage
Rated voltage
5 VAC/VDC
12 VAC/VDC
24 VAC/VDC
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
Operating Mechanical
frequency
Electrical
Insulation resistance
Standard load
Contact
resistance Microload
Between terminals
of same polarity
Between terminals
of different polarity
Between currentDielectric carrying metal part
strength
and ground
Between each terminal
and non-current-carrying metal part
Between lamp
terminals
Vibration
Malfunction
resistance
Destruction
Shock
resistance Malfunction
Momentary operation models: 120
operations/min max. *1
20 operations/min max.
100 MΩ min. (at 500 VDC)
50 mΩ max. (initial value)
50 mΩ max. (initial value)
1,000 VAC, 50/60 Hz for 1 minute
2,000 VAC, 50/60 Hz for 1 minute
2,000 VAC, 50/60 Hz for 1 minute
2,000 VAC, 50/60 Hz for 1 minute
1,000 VAC, 50/60 Hz for 1 minute
*2
10 to 55 Hz, 1.5-mm double
amplitude *3
500 m/s2 max.
200 m/s2 max. *3
Momentary operation models:
1,000,000 operations min.
Alternate operation models:
Life
Mechanical
100,000 operations min.
expect(One operation consists of set and
ancy
reset operations.)
Electrical
100,000 operations min. (rated load)
Weight
Approx. 10 g
NC
Standard load: 10 A max.
Inrush
current NO
Standard load: 10 A max.
Ambient operating
−10 to 50°C
temperature
(with no icing or condensation)
Ambient operating humidity
35% to 85% RH
−25 to 65°C
Ambient storage temperature
(with no icing or condensation)
Degree of protection
IP00
Electric shock protection class Class II
PTI (proof tracking index)
175
Pollution degree
3 (IEC 60947-5-1)
*1. With alternate operation models, 60 operations/min max. One operation
cycle consists of set and reset operations.
*2. With no incandescent lamp or LED lamp mounted.
*3. Malfunction : 1 ms max.
Operating Characteristics
Standard
lamp
Rated current
200 mA
80 mA
40 mA
Low-power
lamp
Rated current
100 mA
40 mA
25 mA
Operation
Operating
characteristics
Operating force
Releasing force
Total travel
Pretravel
Lock travel
alternate
Momentary
Alternate
operation models operation models
OF max.
RF min.
TT
PT max.
3.92 N
0.49 N
Approx. 3 mm
2.2 mm
4.90 N
0.294 N
Approx. 3 mm
2.2 mm
LTA min.
−
0.5 mm
Contact Form
Name
Double-throw contacts
Contact Form
NC
COM
NO
12
A3S
Nomenclature
Model Structure
Operation Unit Structure
Color cap
Legend plate *
Dispersion plate
LED/incandescent lamp holder
* Not included for the Square Models (A3SA) with
incandescent lamp.
Operation Unit
Rectangular
Models
A3SJ
Square
Models
A3SA
Screen pattern
Single screen
Vertical 2-split screen
Operation Unit colors
· LED-lighted models
White , Red , Green , Yellow
· Incandescent lamp-lighted model
White , Red , Green , Blue , Yellow
Lamp
Socket Unit
· Standard load
250 VAC, 2 A
125 VAC, 3 A
30 VDC, 2 A
· Microload
125 VAC, 0.1 A
30 VDC, 0.1 A
Lighting method
· LED
· Incandescent lamp
Note: The A3SJ is shown here as an example.
13
A3S
Dimensions
(Unit: mm)
The Dimension shows 2-switch outputs.
Rectangular Models (A3SJ)
OMRON logo
Square Models (A3SA)
0.5
OMRON logo
19.4
14.1
8.2
0.5
13.2
19.1 22±0.2
4.5
13.2
15.8±0.2
13.2
17.8±0.2
15.8±0.2
2.8
24±0.2
1.8±0.1
4.2
15.8±0.2
1.8
1.2
17.8±0.2
10.4
2.8
Tab terminal #110
4.2
17.8±0.2
32.5
40
1.8±0.1
Tab terminal #110
32.5
40
Note: Unless specified, a tolerance of ±0.4 mm applies for all dimensions. Use a mounting panel thickness of 1 to 4 mm.
Terminal Arrangement
Bottom View (All are shown with the OMRON logo facing down.)
Rectangular Models (A3SJ)
SPDT
NC1
11.8
LA+
SPDT
11.8
8.8
LA-
LA+
NO1 NO2
LA-
LB+
C1
LBLB+
NC1
8.8
11.8
C2
8.2
14.1
19.1
1.5
14.1
19.1
DPDT
0.5
0.5
NC1 NC2
LB-
NO1
C1
Square Models (A3SA)
DPDT
L+
NO1
C1
1.5
8.8
L-
10.4
NC1
NC2
NO1
NO2
11.8
C1
2
L+
8.8
L-
C2
4.5
10.4
2
Note: The arrangements given above are not indicated on the Socket Unit.
Contact Type
Incandescent Lamp-lighted Models (The terminal arrangements are the same as for the LED-lighted models.)
Type
Model
Rectangular Models (A3SJ)
BOTTOM VIEW
NC1
SPDT
LA+
NO1
LA-
Square Models (A3SA)
BOTTOM VIEW
LB+
C1
Terminal arrangement
BOTTOM VIEW
NC1
TOP VIEW
NC1
LB-
NO1
C1
DPDT
TOP VIEW
Lighting block
TOP VIEW
NC2
Terminal arrangement
BOTTOM VIEW
Lighting block
TOP VIEW
NC1
NC2
L+
NO1
LC1 NO2
C2
LA+ NO1
LBLANO2 LB+
C1
C2
Terminal arrangement
L+
L-
Lighting block
Terminal arrangement Lighting block
LED Lamp-lighted Models
Type
Model
Rectangular Models (A3SJ)
BOTTOM VIEW
TOP VIEW
Square Models (A3SA)
BOTTOM VIEW
TOP VIEW
NC1
NC1
SPDT
LA+
L+
LB-
NO1
NO1
LAC1
C1
LB+
Terminal arrangement Lighting block
BOTTOM VIEW
NC1
DPDT
TOP VIEW
Terminal arrangement Lighting block
BOTTOM VIEW
TOP VIEW
NC1
NC2
NC2
L+
NO1
LC1 NO2
C2
LA+
LBNO1
LB+
LANO2
C1
C2
Terminal arrangement
L-
Lighting block
Terminal arrangement
Lighting block
14
A3S
Dimensions
(Unit: mm)
Panel Cutout (If using a Switch Guard or Seal Cover, refer to the panel cutout diagrams on page 17.)
Rectangular Models (A3SJ)
Classification
Individual
mounting,
horizontal
Multiple
mounting,
horizontal
Flange
mount
models Individual
mounting,
vertical
Mounting design
Panel cutout
16.2 ±0.2
17.8 ±0.2
24 ±0.2
17.8 ±0.2
22.4 ±0.2
1
2
24n-1.6 ±0.2
24n ±0.5
Mount to Long
Mounting Plate
(A3SJ-3002)
before use.
24 ±0.2
24 ±0.2
1
22.4 ±0.2
16.2 ±0.2
2
Mount to Long
Mounting Plate
(A3SJ-3002)
before use.
n
22.4 ±0.2
17.8n-1.6 ±0.2
16.2 ±0.2
19.8
26.9 ±0.2
29.7
Multiple
mounting,
horizontal
Barrier
mount
models Individual
mounting,
vertical
19.8
1
2
n
25.3n+1.6 ±0.2
25.3n+4.4
Mount to Long
Mounting Plate
(A3SJ-3002) before
use.
26
26
Panel cutout spacing between rows of
Units:
16.2 ±0.2
1.4
4 min.
6 min.
22.4 ±0.2
20.7 ±0.2
23.5
Multiple
mounting,
vertical
3 min.
6 min.
17.8n ±0.5
Individual
mounting,
horizontal
Panel cutout spacing between rows of
Units:
16.2 ±0.2
n
17.8 ±0.2
Multiple
mounting,
vertical
Remarks
1
2
n
Mount to Long
Mounting Plate
(A3SJ-3002)
before use.
Dotted line indicates the position of each
mounting Barrier.
22.4 ±0.2
19.1n+1.6 ±0.2
19.1n+4.4
* If the panel is to be finished (e.g., coated), make sure that the panel meets the specified dimensions after the coating.
Square Models (A3SA)
Classification
Individual
mounting
Mounting design
Panel cutout
16.2 ±0.2
17.8 ±0.2
3 min.
Flange
mount
models
16.2 ±0.2
17.8 ±0.2
Multiple
mounting
17.8 ±0.2
2
2
3
6 min.
16.2 ±0.2
n
17.8n ±0.5
Individual
mounting
Remarks
Panel cutout spacing between rows of
Units:
17.8n-1.6 ±0.2
Panel cutout spacing between rows of
Units:
16.2 ±0.2
19.8
1.4
Barrier
mount
models
4 min.
20.7 ±0.2
23.5
6 min.
Multiple
mounting
19.8
1
2
3
19.1n+ 4.4
n
16.2 ±0.2
19.1n+1.6 ±0.2
Dotted line indicates the position of each
mounting Barrier.
* If the panel is to be finished (e.g., coated), make sure that the panel meets the specified dimensions after the coating.
15
A3S
Dimensions
(Unit: mm)
Accessory Mounting Dimensions
Legend Plate
Rectangular Models
A3SJ-4203/-4204
Extractor
A3PJ-5080
Square Models
A3SA-4203/-4204
0
18.4 -0.1
20
2.5
2.5
15
10
5
0
11.6 -0.1
0.3
50
0
0
11.6 -0.1
11.5 -0.1
0.8
25 ±2
0.8
Note: Made from stainless steel.
Socket-mounting Dimensions
Rectangular Models
Wire-wrap Terminals
A3SJ-4104
Solder Terminals
A3SJ-4106
21.2
PCB Terminals
A3SJ-4105
21.2
21.2
23.6
23.6
0.3
23.6
15
15
15
15.7 ±0.6
8.2
0.5
3.6
3 17.6
3 17.6
17.6
1.2
47.5
47.5
47.5
Terminal Hole Dimensions
0.9R
PCB Cutout
(Bottom View)
0.6R
3
3.2
2.9
1.5
0.8
11.8 8.8
1.5
2.9
Ten, 1.5-dia. holes
1.65
8.2
14.1
19.1
2.85
16
A3S
Dimensions
(Unit: mm)
Square Models
Wire-wrap Terminals
A3SA-4101
Solder Terminals
A3SA-4103
PCB Terminals
A3SA-4102
21.2
21.2
21.2
0.3 17.6
17.6
17.6
15
15
15
8.2
15.7 ±0.6
0.5
3.6
3
3 17.6
17.6
17.6
1.2
47.5
47.5
47.5
PCB Cutout
(bottom view)
Terminal Hole Dimensions
0.9R
0.6R
5.0
3
3.2
2.9
10.4
4.5
2.2
0.8
11.8
8.8
Eight, 1.5-dia. holes
The OMRON logo is
downward on the Socket Unit.
Switch and Guard Mounting Dimensions
Rectangular Models
A3SJ-5050
Panel Cutouts
Individual Mounting
22.4±0.3
Panel Cutouts
Square Models
A3SA-5050
Individual Mounting
16.2±0.2
OMRON logo
OMRON logo
Transparent plate
Transparent plate
16.2±0.2
16.2±0.2
20
20
26
Switch Guard
(A3SJ-5050)
Switch Guard
(A3SA-5050)
Multiple Mounting, horizontal
Multiple Mounting, horizontal
20n-3.8±0.2
26n-3.6±0.2
+0
+0
16.2±0.2
20 -0.2
+0
26 -0.2
31.7
16.2±0.2
20 -0.2
+0
8.5
min.
20 -0.2
31.7
39.2
9±0.1
20
8.5
min.
39.2
9 ±0.1
Seal Cover Mounting Dimensions
Panel Cutouts
Rectangular Models
ASJ-5060
Individual Mounting
22.4±0.3
Square Models
A3SA-5060
Panel Cutouts
Individual Mounting
OMRON logo
OMRON logo
Transparent plate
16.2±0.2
Transparent plate
16.2±0.2
16.2±0.2
Seal Cover
(A3SJ-5060)
Black
Multiple Mounting, horizontal
22.4±0.3
Seal Cover
(A3SA-5060)
8.5 min.
Black
Multiple Mounting, horizontal
16.2±0.2
8.5 min.
16.2±0.2
24.3
31.8
30.5
8.3
24.3
8.5
min.
39.3
16.2±0.2
31.8
24.3
8.3
39.3
8.5
min.
Note: 1. Recommended panel thickness: 1.0 to 3.3 mm
2. Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.
17
A3S
Safety Precautions
Refer to Safety Precautions for All Pushbutton Switches/Indicators.
Precautions for Correct Use
Mounting
LED Lamp
• Always make sure that the power is turned OFF before mounting,
removing, or wiring the Switch, or performing maintenance. Electric
shock or fire may occur.
• A current-limiting resistor for the LED lamp is built in, so no external
resistor is required.
Rated voltage
5 VDC
12 VDC
24 VDC
Wiring
• For wiring, use a wire size that is appropriate for the applied voltage
and the supplied current. Be sure to perform soldering according to
the following conditions. Using the Switch with incomplete soldering
may result in errors and heat, which may cause fire.
(1) Manual soldering: Use a soldering iron with a tip temperature of
350°C maximum and complete soldering within 3 seconds.
(2) Dip soldering: Solder at 350°C for 3 s or less.
Wait for one minute after soldering before exerting any external
force on the solder.
• Use non-corrosive liquid rosin as the flux.
• If screw-tightened terminals are used, hold the Socket Unit Set or
Socket Unit and install the lead wiring applying a torque of less than
0.98 N·m to the Socket Unit. Applying a torque of more than 0.98
N·m may result in damage. The tightening torque is 0.59 to 0.78
N·m.
• Make sure that the insulating sheath of the wires does not come in
contact with the Unit. If wiring is performed with the insulating
sheath of the wires coming in contact with the Unit, use wire with a
minimum heat resistance of 100°C.
• After wiring the Switch, make sure that there is a suitable isolation
distance.
Operating Environment
Built-in limiting resistance
39 Ω
270 Ω
1300 Ω
Incandescent Lamp
• It is advantageous in terms of service life and heat generation to
apply 80% of the rated voltage (operating voltage) to the
incandescent lamp.
Operation
• Always mount the Operation Unit before operating the Switch.
(Using your fingers or tweezers to operate moving parts of the
Switch may deform internal parts and cause malfunctions.)
Character Film
• If the character film is to be specially prepared, use heat-resistant
film with a maximum thickness of 0.2 mm.
11.3 ±0.2
A3SJ
A3SA
18.2 ±0.2
11.3 ±0.2
11.3 ±0.2
Others
• If the panel is to be finished (e.g., coated), make sure that the panel
meets the specified dimensions after the coating.
• Do not use in locations that are subject to dust, oil, or metal fillings,
because these may penetrate the interior the Switch and cause
malfunction.
Using Microloads
Voltage (V)
• Using a standard load switch when a microload circuit is opened or
closed may cause wear on the contacts. Use the switch within the
operating range. (Refer to the diagram below.) Even when using
microload models within the operating range shown below, if inrush
current occurs when the contacts are opened or closed, it may
cause the contact surface to become rough, and so decrease life
expectancy. Therefore, insert a contact protection circuit where
necessary.
The minimum applicable load is the N-level reference value. This
value indicates the malfunction reference level for the reliability
level of 60% (λ 60) (conforming to JIS C5003).
The equation λ 60 = 0.5 x 10−6/time indicates that the estimated
malfunction rate is less than 1/2,000,000 with a reliability level of
60%.
0.15 mA
26 mA 100 mA
30
24
Standard
load area
Microload area
12
Invalid
area
5
0
0.1
100 mA 150 mA
1 mA
1
10
100
1,000
Current (mA)
18
A3S
Application
Replacing Incandescent and LED Lamps and Panel Mounting
Removing the Display
• Grasp the groove on the color cap surface, and pull it firmly toward
you to remove the Display.
• An Extractor (A3PJ-5080) is available to conveniently remove the
Display.
Barrier Mounting
• Place the Edge Barrier on the side of the Socket Unit, and then
insert it into the panel.
• Insert the Intermediate Barrier between the Switches after inserting
the Socket Units into the panel.
Intermediate
Barrier
Edge Barrier
Mounting and Replacing Incandescent and LED Lamps
Inscribing Legend Plate Characters
Inscribing
A3SJ (M2SJ)
• Inscription depth: 0.5 mm max.
• The legend plate is made of polycarbonate, so apply an alcoholbased paint coating, such as melamine, phthalate, or acrylic resin
paint when marking the legend.
Inserting the Display into the Socket Unit
Insert the Operation Unit in the proper direction. With the OMRON
logo downward, insert the Operation Unit so that the lamp/LED
terminals on the inside surface of the Unit case and the contactors of
the Display.
Terminals for incandescent or LED lamp
(built into the case)
Contactors
Legend plate
• When replacing the legend plate, be careful that the coil spring in
the Display does not become removed.
OMRON logo
Rated Voltage and Color of LED
The LED voltage rating is indicated on the base. Use the LED within
±5% of voltage range.
Rated voltage
Illuminating color
(color band)
Mounting to the Switch Panel
Mount the Socket Unit to the panel by inserting it from the front of the
panel.
Mount the Socket Unit so that the OMRON logo is downward.
19
A3S
Assembling the Legend Plate (Plunger)
A3SA (M2SA)
(LED Lamp)
(1) Assemble the color plate to the plunger, and then assemble the
legend plate on top.
Legend plate
Dispersion
plate
Plunger
(Incandescent Lamp)
(2) Inscribe the surface of the plunger, and then coat the surface.
Lighted Square Pushbutton Switches
Assemble models A3SA-5301 to A3SA-5305 so that the hook is
toward you.
Direction of
inscription
Hook toward you
Note: Legend plates cannot be used with A3SA Displays for incandescent
lamps.
(3) Assemble the color cap to the inscribed plunger.
Plunger
Color cap
(4) Push in the color in the direction of the arrow to assemble the
plunger and the lamp holder.
Lighted Square Pushbutton Switches
A3SA
Perform the assembly so that the wide groove and the hook on the
plunger are in the same direction.
Plunger
Indicator
M2SA
Perform the assembly so that the wide groove and the hook on the
plunger are in the same direction.
20
Read and Understand This Catalog
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or
comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified)
from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR
FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS
IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT
LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS
OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT
SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's
application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the
products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product,
machine, system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible
uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:
 Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.
 Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles,
safety equipment, and installations subject to separate industry or government regulations.
 Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE
SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other reasons.
It is our practice to change model numbers when published ratings or features are changed, or when significant construction changes are made.
However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or
establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual
specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
PERFORMANCE DATA
Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the
result of OMRON’s test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON
Warranty and Limitations of Liability.
ERRORS AND OMISSIONS
The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical,
typographical, or proofreading errors, or omissions.
2012.9
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2012 All Right Reserved.