Omron A16 DATASHEET
Pushbutton Switch
A16
Mounting Aperture of 16 mm
• Modular construction
(Pushbutton + Case + Lamp + Switch)
• Wide Variety of Control and Signal Devices: Lighted, Non-Lighted, and Buzzer
• UL and cUL approved.
• Conforms to EN60947-5-1, IEC947-5-1
• Quick and easy assembly, snap-in Switch.
• Wide range of switching capacity from standard to microload
• High reliability, IP65
• Short mounting depth, less than 28.5 mm below panel
Model Number Structure
■ Model Number Legend
Completely Assembled
The model numbers used to order sets of Units are illustrated below. One set comprises the Pushbutton, Lamp (lighted models only), Case, and
Switch.
A 1 6 5 L - J R M - 24D - 2
(1) Degree of Protection
Symbol Protection
No symbol IP40
5 IP65 oil-resistant
(2) Lighted/Non-lighted
Symbol
No symbol
L Lighted
(3) Shape of Pushbutton
Symbol Shape
J Rectangular 2-way guard
A Square 2-way guard
T Round Projecting model
3J Rectangular 3-way guard
BA Square 24-mm square
Type
Non-lighted
(1) (2) (3) (4) (5) (6) (7)
(6) Light Source
(4) Color of Pushbutton
Symbol Color
R Red
Y Yellow
PY Pure yellow
G Green
W White
A Blue
B Black (non-lighted
models only)
"Colored-illumination" models
operate in the way shown below:
Unlit Lit
White
Color
The built-in LED
is colored.
(5) Switch Operation
Symbol Operation
M Momentary
A Alternate
Momentary-action: Self-resetting
Alternate-action: Self-holding
Symbol Type
No symbol
12D LED 12 ±5% VDC 12 VDC
24D 24 ±5% VDC 24 VDC
Voltage Reduction Unit (24-V Built-in LED)
Symbol Type
Note: 1. Solder terminals are available only with 100-V
models.
2. The Voltage Reduction Unit is not available for
models with PCB terminals.
(7) Contact Configuration
Symbol Type Terminal
1 SPDT
2 DPDT
1P SPDT
2P DPDT
2S DPDT
Only DPDT contacts are available
with Screw-Less Clamp.
Operating
voltage
Non-lighted
5 5 VAC/VDC 6 VAC/VDC
Incandescent
12 12 VAC/VDC 14 VAC/VDC
lamp
24 24 VAC/VDC 28 VAC/VDC
5D 5 ±5% VDC 5 VDC
Operating voltage
T1 90 to 121 VAC/VDC 110 VAC
LED
T2 180 to 242 VAC/VDC 220 VAC
Solder
Terminal
PCB
Terminal
Screw-Less
Clamp
Rated
voltage
Rated
voltage
Switches
Pushbutton
Pushbutton Switch A16 G-5
Neon lamps are not available with models that are ordered as a set. They must be ordered individually if required. Refer to page 13.
Model Lighted Pushbutton Switches Non-lighted Pushbutton Switches
Pushbutton
Rectangular
Rectangular
Square
Round
Lamp
LED lamp Incandescent lamp Neon lamp
Case
Switch
Note: There is no Lamp with non-lighted models.
Subassembled
1. Pushbutton
Square
Round
Solder Terminals
(Without Voltage Reduction Unit)
Non-lighted/Lighted
A16@L-@@
1 2 3
1. Degree of Protection
None: IP40
5: IP65
2. Flange Shape
J: Rectangular
T: Round
A: Square
3. Illumination Color for Non-lighted Models
R: Red
G: Green
Y: Yellow
W: White
A: Blue
B: Black
Illumination Color for Lighted Models
LED/Incandescent Lamp
R: Red
Y: Yellow
PY: Pure yellow
W: White
A: Blue
LED
GY: Green
Incandescent Lamp
G: Green
Neon Lamp
RN: Red
GN: Green
G-6 Pushbutton Switch A16
2. Lamp
A16-@@
1 2
1. Operating Voltage (Rated Voltage)
Incandescent Lamp
5: 5 VAC/VDC (6 VAC/VDC)
12: 12 VAC/VDC (14 VAC/VDC)
24: 24 VAC/VDC (28 VAC/VDC)
LED
5DS: 5 VDC (5 VDC)
12DS:12 VDC (12 VDC)
24DS:24 VDC (24 VDC)
Neon Lamp
1N: 100 VAC (110 VAC)
2N: 200 VAC (220 VAC)
3. Case
A16@-@@
1 2 3
1. Degree of Protection
None: IP40
5: IP65 Oil-resistant
2. Illumination Color
None: Incandescent Lamp
R: Red (LED)
G: Green (LED)
Y: Yellow (LED)
W: White (LED)
A: Blue (LED)
RN: Red (Neon Lamp)
GN: Green (Neon Lamp)
2. Flange Shape
CJ: Rectangular
CT: Round
CA: Square
3. Switch Action
M: Momentary
A: Alternate
4. Switch (Solder Terminals)
A16-@-@
1 2
1. Voltage Reduction Circuit
(Operating Voltage/Rated Voltage)
None: Without Voltage Reduction Unit
T1: 100 VAC/110 VAC
5. Socket (Solder Terminals Only)
M16-@
1
1. Voltage Reduction Circuit
(Operating Voltage/Rated Voltage)
0: Without Voltage Reduction Unit
T1: 100 VAC/110 VAC
2. Contacts
1: SPDT
2: DPDT
Switches
Pushbutton
Pushbutton Switch A16 G-7
Ordering Information
■ List of Models
Ordering as a Set
The model numbers used to order sets of Units are given in the following tables. One set comprises the Pushbutton, Lamp (lighted models only),
Case, and Switch.
A16@-J (Rectangular) Models
Solder Terminal Models
IP40
Output Lighting Operating
SPDT LED
DPDT LED
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A16-J@M-1 A16-J@A-1
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A16-J@M-2 A16-J@A-2
voltage
5 VDC A16L-J@M-5D-1 A16L-J@A-5D-1 R: red
12 VDC A16L-J@M-12D-1 A16L-J@A-12D-1
24 VDC A16L-J@M-24D-1 A16L-J@A-24D-1
5 VDC/VAC A16L-J@M-5-1 A16L-J@A-5-1 R: red
12 VDC/VAC A16L-J@M-12-1 A16L-J@A-12-1
24 VDC/VAC A16L-J@M-24-1 A16L-J@A-24-1
5 VDC A16L-J@M-5D-2 A16L-J@A-5D-2 R: red
12 VDC A16L-J@M-12D-2 A16L-J@A-12D-2
24 VDC A16L-J@M-24D-2 A16L-J@A-24D-2
5 VDC/VAC A16L-J@M-5-2 A16L-J@A-5-2 R: red
12 VDC/VAC A16L-J@M-12-2 A16L-J@A-12-2
24 VDC/VAC A16L-J@M-24-2 A16L-J@A-24-2
Momentary operation
(Self-resetting)
Alternate operation (Self-holding) Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
IP65 Oil-resistant
Output Lighting Operating
SPDT LED
DPDT LED
Note: 1. Enter the desired color symbol for the Pushbutton in the @.
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A165-J@M-1 A165-J@A-1
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A165-J@M-2 A165-J@A-2
2. Black (“B”) Pushbuttons are only available for non-lighted models.
voltage
5 VDC A165L-J@M-5D-1 A165L-J@A-5D-1 R: red
12 VDC A165L-J@M-12D-1 A165L-J@A-12D-1
24 VDC A165L-J@M-24D-1 A165L-J@A-24D-1
5 VDC/VAC A165L-J@M-5-1 A165L-J@A-5-1 R: red
12 VDC/VAC A165L-J@M-12-1 A165L-J@A-12-1
24 VDC/VAC A165L-J@M-24-1 A165L-J@A-24-1
5 VDC A165L-J@M-5D-2 A165L-J@A-5D-2 R: red
12 VDC A165L-J@M-12D-2 A165L-J@A-12D-2
24 VDC A165L-J@M-24D-2 A165L-J@A-24D-2
5 VDC/VAC A165L-J@M-5-2 A165L-J@A-5-2 R: red
12 VDC/VAC A165L-J@M-12-2 A165L-J@A-12-2
24 VDC/VAC A165L-J@M-24-2 A165L-J@A-24-2
Momentary operation
(Self-resetting)
Alternate operation (Self-holding) Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
G-8 Pushbutton Switch A16
A16@-A (Square) Models
Solder Terminal Models
IP40
Output Lighting Operating
SPDT LED
DPDT LED
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A16-A@M-1 A16-A@A-1
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A16-A@M-2 A16-A@A-2
voltage
5 VDC A16L-A@M-5D-1 A16L-A@A-5D-1 R: red
12 VDC A16L-A@M-12D-1 A16L-A@A-12D-1
24 VDC A16L-A@M-24D-1 A16L-A@A-24D-1
5 VDC/VAC A16L-A@M-5-1 A16L-A@A-5-1 R: red
12 VDC/VAC A16L-A@M-12-1 A16L-A@A-12-1
24 VDC/VAC A16L-A@M-24-1 A16L-A@A-24-1
5 VDC A16L-A@M-5D-2 A16L-A@A-5D-2 R: red
12 VDC A16L-A@M-12D-2 A16L-A@A-12D-2
24 VDC A16L-A@M-24D-2 A16L-A@A-24D-2
5 VDC/VAC A16L-A@M-5-2 A16L-A@A-5-2 R: red
12 VDC/VAC A16L-A@M-12-2 A16L-A@A-12-2
24 VDC/VAC A16L-A@M-24-2 A16L-A@A-24-2
Momentary operation
(Self-resetting)
Alternate operation (Self-holding) Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
IP65 Oil-resistant
Output Lighting Operating
SPDT LED
DPDT LED
Note: 1. Enter the desired color symbol for the Pushbutton in the @.
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A165-A@M-1 A165-A@A-1
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A165-A@M-2 A165-A@A-2
2. Black (“B”) Pushbuttons are only available for non-lighted models.
voltage
5 VDC A165L-A@M-5D-1 A165L-A@A-5D-1 R: red
12 VDC A165L-A@M-12D-1 A165L-A@A-12D-1
24 VDC A165L-A@M-24D-1 A165L-A@A-24D-1
5 VDC/VAC A165L-A@M-5-1 A165L-A@A-5-1 R: red
12 VDC/VAC A165L-A@M-12-1 A165L-A@A-12-1
24 VDC/VAC A165L-A@M-24-1 A165L-A@A-24-1
5 VDC A165L-A@M-5D-2 A165L-A@A-5D-2 R: red
12 VDC A165L-A@M-12D-2 A165L-A@A-12D-2
24 VDC A165L-A@M-24D-2 A165L-A@A-24D-2
5 VDC/VAC A165L-A@M-5-2 A165L-A@A-5-2 R: red
12 VDC/VAC A165L-A@M-12-2 A165L-A@A-12-2
24 VDC/VAC A165L-A@M-24-2 A165L-A@A-24-2
Momentary operation
(Self-resetting)
Alternate operation (Self-holding) Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
Switches
Pushbutton
Pushbutton Switch A16 G-9
A16@-T (Round) Models
Solder Terminals
IP40
Output Lighting Operating
SPDT LED
DPDT LED
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A16-T@M-1 A16-T@A-1
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A16-T@M-2 A16-T@A-2
voltage
5 VDC A16L-T@M-5D-1 A16L-T@A-5D-1 R: red
12 VDC A16L-T@M-12D-1 A16L-T@A-12D-1
24 VDC A16L-T@M-24D-1 A16L-T@A-24D-1
5 VDC/VAC A16L-T@M-5-1 A16L-T@A-5-1 R: red
12 VDC/VAC A16L-T@M-12-1 A16L-T@A-12-1
24 VDC/VAC A16L-T@M-24-1 A16L-T@A-24-1
5 VDC A16L-T@M-5D-2 A16L-T@A-5D-2 R: red
12 VDC A16L-T@M-12D-2 A16L-T@A-12D-2
24 VDC A16L-T@M-24D-2 A16L-T@A-24D-2
5 VDC/VAC A16L-T@M-5-2 A16L-T@A-5-2 R: red
12 VDC/VAC A16L-T@M-12-2 A16L-T@A-12-2
24 VDC/VAC A16L-T@M-24-2 A16L-T@A-24-2
Momentary operation
(Self-resetting)
Alternate operation (Self-holding) Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
IP65 Oil-resistant
Output Lighting Operating
SPDT LED
DPDT LED
Note: 1. Enter the desired color symbol for the Pushbutton in the @.
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A165-T@M-1 A165-T@A-1
without Voltage
Reduction Unit
Incandescent
lamp
Non-lighted A165-T@M-2 A165-T@A-2
2. Black (“B”) Pushbuttons are only available for non-lighted models.
voltage
5 VDC A165L-T@M-5D-1 A165L-T@A-5D-1 R: red
12 VDC A165L-T@M-12D-1 A165L-T@A-12D-1
24 VDC A165L-T@M-24D-1 A165L-T@A-24D-1
5 VDC/VAC A165L-T@M-5-1 A165L-T@A-5-1 R: red
12 VDC/VAC A165L-T@M-12-1 A165L-T@A-12-1
24 VDC/VAC A165L-T@M-24-1 A165L-T@A-24-1
5 VDC A165L-T@M-5D-2 A165L-T@A-5D-2 R: red
12 VDC A165L-T@M-12D-2 A165L-T@A-12D-2
24 VDC A165L-T@M-24D-2 A165L-T@A-24D-2
5 VDC/VAC A165L-T@M-5-2 A165L-T@A-5-2 R: red
12 VDC/VAC A165L-T@M-12-2 A165L-T@A-12-2
24 VDC/VAC A165L-T@M-24-2 A165L-T@A-24-2
Momentary operation
(Self-resetting)
Alternate operation (Self-holding) Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
G-10 Pushbutton Switch A16
Other Models
Models with Reduced-voltage Lighting and Solder Terminals
IP40
Output Lighting Operating voltage Momentary
SPDT LED (with built-in reDPDT 100/110 VAC/VDC A16L-∆@M-T1-2 A16L-∆@A-T1-2
duced-voltage lighting
function)
100/110 VAC/VDC A16L-∆@M-T1-1 A16L-∆@A-T1-1 R: red
operation
(Self-resetting)
IP65
Output Lighting Operating voltage Momentary
SPDT LED (with built-in reDPDT 100/110 VAC/VDC A165L-∆@M-T1-2 A165L-∆@A-T1-2
Note: 1. Enter the desired shape for the Pushbutton in ∆: J (rectangular), A (square), or T (round). Enter the desired color symbol for the Push-
button in the @.
2. Models with rated voltage 200 to 220 VAC/VDC (T2 models) are only available with Screw-Less Clamps.
duced-voltage lighting
function)
100/110 VAC/VDC A165L-∆@M-T1-1 A165L-∆@A-T1-1 R: red
operation
(Self-resetting)
Screw-Less Clamp Models
Alternate operation
(Self-holding)
Alternate operation
(Self-holding)
Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
IP40
Output Lighting Operating voltage Momentary operation
DPDT LED 5 VDC A16L-∆@M-5D-2S A16L-∆@A-5D-2S R: red
12 VDC A16L-∆@M-12D-2S A16L-∆@A-12D-2S
24 VDC A16L-∆@M-24D-2S A16L-∆@A-24D-2S
LED (with built-in reduced-voltage lighting
function)
Non-lighted A16-∆@M-2S A16-∆@A-2S
100/110 VAC/VDC A16L-∆@M-T1-2S A16L-∆@A-T1-2S
200/220 VAC/VDC A16L-∆@M-T2-2S A16L-∆@A-T2-2S
(Self-resetting)
Alternate operation
(Self-holding)
Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
IP65
Output Lighting Operating voltage Momentary operation
DPDT LED 5 VDC A165L-∆@M-5D-2S A165L-∆@A-5D-2S R: red
12 VDC A165L-∆@M-12D-2S A165L-∆@A-12D-2S
24 VDC A165L-∆@M-24D-2S A165L-∆@A-24D-2S
LED (with built-in reduced-voltage lighting function)
Non-lighted A165-∆@M-2S A165-∆@A-2S
Note: 1. Enter the desired shape for the Pushbutton in ∆: J (rectangular), A (square), or T (round). Enter the desired color symbol for the Push-
button in the @.
2. Black (“B”) Pushbuttons are only available for non-lighted models.
100/110 VAC/VDC A165L-∆@M-T1-2S A165L-∆@A-T1-2S
200/220 VAC/VDC A165L-∆@M-T2-2S A165L-∆@A-T2-2S
(Self-resetting)
Alternate operation
(Self-holding)
Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
Switches
Pushbutton
Pushbutton Switch A16 G-11
A165@-BA (24-mm Square) Models
Solder Terminals
IP65
Output Lighting Operating
SPDT LED 5 VDC A165L-BA@M-5D-1 A165L-BA@A-5D-1 R: red
LED 12 VDC A165L-BA@M-12D-1 A165L-BA@A-12D-1
LED 24 VDC A165L-BA@M-24D-1 A165L-BA@A-24D-1
Non-lighted A165-BA@M-1 A165-BA@A-1
DPDT LED 5 VDC A165L-BA@M-5D-2 A165L-BA@A-5D-2
LED 12 VDC A165L-BA@M-12D-2 A165L-BA@A-12D-2
LED 24 VDC A165L-BA@M-24D-2 A165L-BA@A-24D-2
Non-lighted A165-BA@M-2 A165-BA@A-2
Note: 1. Enter the desired color symbol for the Pushbutton in the @.
2. Black (“B”) Pushbuttons are only available for non-lighted models.
voltage
Momentary operation
(Self-resetting)
Alternate operation (Self-holding) Pushbutton color
symbol (See note 1.)
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
G-12 Pushbutton Switch A16
Ordering Individually
Pushbuttons, Lamps, Cases, and Switches (Sockets) 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.
Pushbutton
Rectangular Models Square Models Round Models
Note: Use IP40 Pushbuttons with IP40 Switches and
use IP65 Pushbuttons with IP65 Switches. There
is no Legend Plate built into the Pushbutton
Case
LED
Lighted Models Non-lighted Models
Lamp
Incandescent
lamp
Neon lamp
Socket
Solder terminals
(no transformer)
Switches
Pushbutton
Lighted/non-lighted
Pushbutton Switch A16 G-13
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