Omron A16 - User manual

Pushbutton Switch A16 G-5
Pushbutton
Switches
Pushbutton Switch
A16
Mounting Aperture of 16 mm
• Modular construction
(Pushbutton + Case + Lamp + Switch)
• Wide Variety of Control and Signal Devices: Lighted, Non-Light-
ed, 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) (2) (3) (4) (5) (6) (7)
(1) Degree of Protection
Symbol Protection
5 IP65 oil-resistant
Unlit Lit
White Color
(4) Color of Pushbutton
Symbol Color
R Red
Y Yellow
PY Pure yellow
G Green
W White
A Blue
(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
(2) Lighted/Non-lighted
Symbol
No symbol
(5) Switch Operation
Symbol Operation
M Momentary
A Alternate
(7) Contact Configuration
Symbol Type Terminal
1 SPDT
2 DPDT
1P SPDT
2P DPDT
2S DPDT
(6) Light Source
5 5 VAC/VDC 6 VAC/VDC
12 12 VAC/VDC 14 VAC/VDC
24 24 VAC/VDC 28 VAC/VDC
5D 5 ±5% VDC 5 VDC
12D LED 12 ±5% VDC 12 VDC
24D 24 ±5% VDC 24 VDC
Non-lighted
Voltage Reduction Unit (24-V Built-in LED)
T1 90 to 121 VAC/VDC 110 VAC
T2 180 to 242 VAC/VDC 220 VAC
LED
Symbol Type
No symbol
Symbol Type
Type
Non-lighted
L Lighted
No symbol IP40
B Black (non-lighted
models only)
"Colored-illumination" models
operate in the way shown below:
The built-in LED
is colored.
Momentary-action: Self-resetting
Alternate-action: Self-holding
Solder
Terminal
PCB
Terminal
Screw-Less
Clamp
Only DPDT contacts are available
with Screw-Less Clamp.
Operating
voltage
Incandescent
lamp
Operating voltage
Note: 1. Solder terminals are available only with 100-V
models.
2. The Voltage Reduction Unit is not available for
models with PCB terminals.
Rated
voltage
Rated
voltage

G-6 Pushbutton Switch A16
Neon lamps are not available with models that are ordered as a set. They must be ordered individually if required. Refer to page 13.
Note: There is no Lamp with non-lighted models.
Subassembled
1. Pushbutton
Non-lighted/Lighted
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
Model Lighted Pushbutton Switches Non-lighted Pushbutton Switches
Pushbutton
Lamp
Case
Switch
Rectangular
Square
Round
Rectangular
Square
Round
LED lamp Incandescent lamp Neon lamp
Solder Terminals
(Without Voltage Reduction Unit)
A16@L-@@
1 2 3

Pushbutton Switch A16 G-7
Pushbutton
Switches
2. Lamp
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)
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)
3. Case
1. Degree of Protection
None: IP40
5: IP65 Oil-resistant
2. Flange Shape
CJ: Rectangular
CT: Round
CA: Square
3. Switch Action
M: Momentary
A: Alternate
4. Switch (Solder Terminals)
1. Voltage Reduction Circuit
(Operating Voltage/Rated Voltage)
None: Without Voltage Reduction Unit
T1: 100 VAC/110 VAC
2. Contacts
1: SPDT
2: DPDT
5. Socket (Solder Terminals Only)
1. Voltage Reduction Circuit
(Operating Voltage/Rated Voltage)
0: Without Voltage Reduction Unit
T1: 100 VAC/110 VAC
A16-@@
1 2
A16@-@@
1 2 3
A16-@-@
1 2
M16-@
1

G-8 Pushbutton Switch A16
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
IP65 Oil-resistant
Note: 1. Enter the desired color symbol for the Pushbutton in the @.
2. Black (“B”) Pushbuttons are only available for non-lighted models.
Output Lighting Operating
voltage Momentary operation (Self-resetting) Alternate operation (Self-holding) Pushbutton color symbol (See note 1.)
SPDT LED
without Voltage
Reduction Unit
5 VDC A16L-J@M-5D-1 A16L-J@A-5D-1 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A16L-J@M-12D-1 A16L-J@A-12D-1
24 VDC A16L-J@M-24D-1 A16L-J@A-24D-1
Incandescent
lamp 5 VDC/VAC A16L-J@M-5-1 A16L-J@A-5-1 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A16-J@M-1 A16-J@A-1
DPDT LED
without Voltage
Reduction Unit
5 VDC A16L-J@M-5D-2 A16L-J@A-5D-2 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A16L-J@M-12D-2 A16L-J@A-12D-2
24 VDC A16L-J@M-24D-2 A16L-J@A-24D-2
Incandescent
lamp 5 VDC/VAC A16L-J@M-5-2 A16L-J@A-5-2 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A16-J@M-2 A16-J@A-2
Output Lighting Operating
voltage Momentary operation (Self-resetting) Alternate operation (Self-holding) Pushbutton color symbol (See note 1.)
SPDT LED
without Voltage
Reduction Unit
5 VDC A165L-J@M-5D-1 A165L-J@A-5D-1 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A165L-J@M-12D-1 A165L-J@A-12D-1
24 VDC A165L-J@M-24D-1 A165L-J@A-24D-1
Incandescent
lamp 5 VDC/VAC A165L-J@M-5-1 A165L-J@A-5-1 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A165-J@M-1 A165-J@A-1
DPDT LED
without Voltage
Reduction Unit
5 VDC A165L-J@M-5D-2 A165L-J@A-5D-2 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A165L-J@M-12D-2 A165L-J@A-12D-2
24 VDC A165L-J@M-24D-2 A165L-J@A-24D-2
Incandescent
lamp 5 VDC/VAC A165L-J@M-5-2 A165L-J@A-5-2 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A165-J@M-2 A165-J@A-2

Pushbutton Switch A16 G-9
Pushbutton
Switches
A16@-A (Square) Models
Solder Terminal Models
IP40
IP65 Oil-resistant
Note: 1. Enter the desired color symbol for the Pushbutton in the @.
2. Black (“B”) Pushbuttons are only available for non-lighted models.
Output Lighting Operating
voltage Momentary operation (Self-resetting) Alternate operation (Self-holding) Pushbutton color symbol (See note 1.)
SPDT LED
without Voltage
Reduction Unit
5 VDC A16L-A@M-5D-1 A16L-A@A-5D-1 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A16L-A@M-12D-1 A16L-A@A-12D-1
24 VDC A16L-A@M-24D-1 A16L-A@A-24D-1
Incandescent
lamp 5 VDC/VAC A16L-A@M-5-1 A16L-A@A-5-1 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A16-A@M-1 A16-A@A-1
DPDT LED
without Voltage
Reduction Unit
5 VDC A16L-A@M-5D-2 A16L-A@A-5D-2 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A16L-A@M-12D-2 A16L-A@A-12D-2
24 VDC A16L-A@M-24D-2 A16L-A@A-24D-2
Incandescent
lamp 5 VDC/VAC A16L-A@M-5-2 A16L-A@A-5-2 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A16-A@M-2 A16-A@A-2
Output Lighting Operating
voltage Momentary operation (Self-resetting) Alternate operation (Self-holding) Pushbutton color symbol (See note 1.)
SPDT LED
without Voltage
Reduction Unit
5 VDC A165L-A@M-5D-1 A165L-A@A-5D-1 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A165L-A@M-12D-1 A165L-A@A-12D-1
24 VDC A165L-A@M-24D-1 A165L-A@A-24D-1
Incandescent
lamp 5 VDC/VAC A165L-A@M-5-1 A165L-A@A-5-1 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A165-A@M-1 A165-A@A-1
DPDT LED
without Voltage
Reduction Unit
5 VDC A165L-A@M-5D-2 A165L-A@A-5D-2 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A165L-A@M-12D-2 A165L-A@A-12D-2
24 VDC A165L-A@M-24D-2 A165L-A@A-24D-2
Incandescent
lamp 5 VDC/VAC A165L-A@M-5-2 A165L-A@A-5-2 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A165-A@M-2 A165-A@A-2

G-10 Pushbutton Switch A16
A16@-T (Round) Models
Solder Terminals
IP40
IP65 Oil-resistant
Note: 1. Enter the desired color symbol for the Pushbutton in the @.
2. Black (“B”) Pushbuttons are only available for non-lighted models.
Output Lighting Operating
voltage Momentary operation (Self-resetting) Alternate operation (Self-holding) Pushbutton color symbol (See note 1.)
SPDT LED
without Voltage
Reduction Unit
5 VDC A16L-T@M-5D-1 A16L-T@A-5D-1 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A16L-T@M-12D-1 A16L-T@A-12D-1
24 VDC A16L-T@M-24D-1 A16L-T@A-24D-1
Incandescent
lamp 5 VDC/VAC A16L-T@M-5-1 A16L-T@A-5-1 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A16-T@M-1 A16-T@A-1
DPDT LED
without Voltage
Reduction Unit
5 VDC A16L-T@M-5D-2 A16L-T@A-5D-2 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A16L-T@M-12D-2 A16L-T@A-12D-2
24 VDC A16L-T@M-24D-2 A16L-T@A-24D-2
Incandescent
lamp 5 VDC/VAC A16L-T@M-5-2 A16L-T@A-5-2 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A16-T@M-2 A16-T@A-2
Output Lighting Operating
voltage Momentary operation (Self-resetting) Alternate operation (Self-holding) Pushbutton color symbol (See note 1.)
SPDT LED
without Voltage
Reduction Unit
5 VDC A165L-T@M-5D-1 A165L-T@A-5D-1 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A165L-T@M-12D-1 A165L-T@A-12D-1
24 VDC A165L-T@M-24D-1 A165L-T@A-24D-1
Incandescent
lamp 5 VDC/VAC A165L-T@M-5-1 A165L-T@A-5-1 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A165-T@M-1 A165-T@A-1
DPDT LED
without Voltage
Reduction Unit
5 VDC A165L-T@M-5D-2 A165L-T@A-5D-2 R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
12 VDC A165L-T@M-12D-2 A165L-T@A-12D-2
24 VDC A165L-T@M-24D-2 A165L-T@A-24D-2
Incandescent
lamp 5 VDC/VAC A165L-T@M-5-2 A165L-T@A-5-2 R: red Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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
Non-lighted A165-T@M-2 A165-T@A-2

Pushbutton Switch A16 G-11
Pushbutton
Switches
Other Models
Models with Reduced-voltage Lighting and Solder Terminals
IP40
IP65
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.
Screw-Less Clamp Models
IP40
IP65
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.
Output Lighting Operating voltage Momentary
operation
(Self-resetting)
Alternate operation
(Self-holding) Pushbutton color symbol (See note 1.)
SPDT LED (with built-in re-
duced-voltage lighting
function)
100/110 VAC/VDC A16L-∆@M-T1-1 A16L-∆@A-T1-1 R: red
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
DPDT 100/110 VAC/VDC A16L-∆@M-T1-2 A16L-∆@A-T1-2
Output Lighting Operating voltage Momentary
operation
(Self-resetting)
Alternate operation
(Self-holding) Pushbutton color symbol (See note 1.)
SPDT LED (with built-in re-
duced-voltage lighting
function)
100/110 VAC/VDC A165L-∆@M-T1-1 A165L-∆@A-T1-1 R: red
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
DPDT 100/110 VAC/VDC A165L-∆@M-T1-2 A165L-∆@A-T1-2
Output Lighting Operating voltage Momentary operation
(Self-resetting) Alternate operation (Self-holding) Pushbutton color symbol (See note 1.)
DPDT LED 5 VDC A16L-∆@M-5D-2S A16L-∆@A-5D-2S R: red
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
12 VDC A16L-∆@M-12D-2S A16L-∆@A-12D-2S
24 VDC A16L-∆@M-24D-2S A16L-∆@A-24D-2S
LED (with built-in re-
duced-voltage lighting
function)
100/110 VAC/VDC A16L-∆@M-T1-2S A16L-∆@A-T1-2S
200/220 VAC/VDC A16L-∆@M-T2-2S A16L-∆@A-T2-2S
Non-lighted A16-∆@M-2S A16-∆@A-2S
Output Lighting Operating voltage Momentary operation
(Self-resetting) Alternate operation (Self-holding) Pushbutton color symbol (See note 1.)
DPDT LED 5 VDC A165L-∆@M-5D-2S A165L-∆@A-5D-2S R: red
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
12 VDC A165L-∆@M-12D-2S A165L-∆@A-12D-2S
24 VDC A165L-∆@M-24D-2S A165L-∆@A-24D-2S
LED (with built-in re-
duced-voltage light-
ing function)
100/110 VAC/VDC A165L-∆@M-T1-2S A165L-∆@A-T1-2S
200/220 VAC/VDC A165L-∆@M-T2-2S A165L-∆@A-T2-2S
Non-lighted A165-∆@M-2S A165-∆@A-2S

G-12 Pushbutton Switch A16
A165@-BA (24-mm Square) Models
Solder Terminals
IP65
Note: 1. Enter the desired color symbol for the Pushbutton in the @.
2. Black (“B”) Pushbuttons are only available for non-lighted models.
Output Lighting Operating
voltage Momentary operation (Self-resetting) Alternate operation (Self-holding) Pushbutton color symbol (See note 1.)
SPDT LED 5 VDC A165L-BA@M-5D-1 A165L-BA@A-5D-1 R: red
Y: yellow
PY: pure yellow
G: green
W: white
A: blue
B: black (See note 2.)
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

Pushbutton Switch A16 G-13
Pushbutton
Switches
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.
Lamp
Lighted Models Non-lighted Models
Case
Socket
LED
Solder terminals
(no transformer)
Lighted/non-lighted
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
Incandescent
lamp
Neon lamp

G-14 Pushbutton Switch A16
Pushbuttons
Illumination: red, yellow, and white use either LED or incandescent lamps.
LED
Incandescent Lamps (With the exception of green, the Units are the same as for LEDs.)
Non-lighted (Same as Units for incandescent lamps.)
Neon Lamps
Degree of protection
Color
IP40 Oil-resistant IP65
Red A16L-JR A16L-AR A16L-TR A165L-JR A165L-AR A165L-TR
Yellow A16L-JY A16L-AY A16L-TY A165L-JY A165L-AY A165L-TY
Pure yellow A16L-JPY A16L-APY A16L-TPY A165L-JPY A165L-APY A165L-TPY
Green A16L-JGY A16L-AGY A16L-TGY A165L-TGY A165L-AGY A165L-TGY
White A16L-JW A16L-AW A16L-TW A165L-TW A165L-AW A165L-TW
Blue A16L-JA A16L-AA A16L-TA A165L-JA A165L-AA A165L-TA
Degree of protection
Color
IP40 Oil-resistant IP65
Red A16L-JR A16L-AR A16L-TR A165L-JR A165L-AR A165L-TR
Yellow A16L-JY A16L-AY A16L-TY A165L-JY A165L-AY A165L-TY
Pure yellow A16L-JPY A16L-APY A16L-TPY A165L-JPY A165L-APY A165L-TPY
Green A16L-JG A16L-AG A16L-TG A165L-JG A165L-AG A165L-TG
White A16L-JW A16L-AW A16L-TW A165L-JW A165L-AW A165L-TW
Blue A16L-JA A16L-AA A16L-TA A165L-JA A165L-AA A165L-TA
Rectangular Square Round Rectangular Square Round
Rectangular Square Round Rectangular Square Round
Degree of protection
Color
IP40 Oil-resistant IP65
Red A16L-JR A16L-AR A16L-TR A165L-JR A165L-AR A165L-TR
Yellow A16L-JY A16L-AY A16L-TY A165L-JY A165L-AY A165L-TY
Pure yellow A16L-JPY A16L-APY A16L-TPY A165L-JPY A165L-APY A165L-TPY
Green A16L-JG A16L-AG A16L-TG A165L-JG A165L-AG A165L-TG
White A16L-JW A16L-AW A16L-TW A165L-JW A165L-AW A165L-TW
Blue A16L-JA A16L-AA A16L-TA A165L-JA A165L-AA A165L-TA
Black A16L-JB A16L-AB A16L-TB A165L-JB A165L-AB A165L-TB
Rectangular Square Round Rectangular Square Round
Degree of protection
Color
IP40 Oil-resistant IP65
Red A16L-JRN A16L-ARN A16L-TRN A165L-JRN A165L-ARN A165L-TRN
Green A16L-JGN A16L-AGN A16L-TGN A165L-JGN A165L-AGN A165L-TGN
White A16L-JWN A16L-AWN A16L-TWN A165L-JWN A165L-AWN A165L-TWN
Rectangular Square Round Rectangular Square Round

Pushbutton Switch A16 G-15
Pushbutton
Switches
Switches
Switches with Reduced-voltage Lighting
Lamps
LED
Note: Use the white LED together with white or pure yellow Pushbuttons.
Incandescent Lamp
Neon Lamp
Note: Use the red neon lamp with red or white Pushbuttons.
Appearance Classification Model
Lighted/non-lighted (com-
mon use)
Standard load/microload
(common use)
SPDT Solder terminal A16-1
DPDT A16-2
SPDT PCB terminal A16-1P
DPDT A16-2P
DPDT Screw-Less Clamp A16-2S
Appearance Classification Model
100 V Standard load/microload
(common use)
SPDT Solder terminal A16-T1-1
DPDT A16-T1-2
100 V DPDT Screw-less clamp A16-T1-2S
200 V A16-T2-2S
5 VDC 12 VDC 24 VDC
Red A16-5DSR A16-12DSR A16-24DSR
Yellow A16-5DSY A16-12DSY A16-24DSY
Green A16-5DSG A16-12DSG A16-24DSG
White (See note.) A16-5DSW A16-12DSW A16-24DSW
Blue A16-5DA A16-12DA A16-24DA
Operating voltage
Light color
5 VAC/VDC 12 VAC/VDC 24 VAC/VDC
Model A16-5 A16-12 A16-24
Operating voltage
100 VAC 200 VAC
Red (See note.) A16-1NRN A16-2NRN
Green A16-1NGN A16-2NGN
Operating voltage

G-16 Pushbutton Switch A16
Cases
Accessories (Order Separately)
Accessories
Appearance Classification Model
IP40 Momentary operation Rectangular (2-way guard) A16-CJM
Rectangular (3-way guard) A16-C3JM
Square A16-CAM
Round A16-CTM
Alternate operation Rectangular (2-way guard) A16-CJA
Rectangular (3-way guard) A16-C3JA
Square A16-CAA
Round A16-CTA
Oil-resistant IP65 Momentary operation Rectangular (2-way guard) A165-CJM
Rectangular (3-way guard) A165-C3JM
Square A165-CAM
Round A165-CTM
Alternate operation Rectangular (2-way guard) A165-CJA
Rectangular (3-way guard) A165-C3JA
Square A165-CAA
Round A165-CTA
Name Appearance Classification Model Remarks
Switch Guards For rectangular models A16ZJ-5050 Cannot be used with the Dust Cover.
For square and round models A16ZA-5050
Dust Covers For rectangular models A16ZJ-5060 Cannot be used with the Switch Guard.
For square models A16ZA-5060
For round models A16ZT-5060
Panel Plugs For rectangular models A16ZJ-3003 Used for covering the panel cutouts for
future panel expansion.
For square models A16ZA-3003
For round models A16ZT-3003

Pushbutton Switch A16 G-17
Pushbutton
Switches
Replacements
Tools
Name Appearance Classification Model Remarks
Legend Plates Rectangular IP40 Milky A16ZJ-5204 A single Legend Plate (transparent) is
included with a standard model.
The milky Legend Plate can be used
with the IP40 and oil-resistant IP65.
Transparent A16ZJ-5202
Oil-resis-
tant IP65 Milky A16ZJ-5204
Transparent A16ZJ-5203
Square IP40 Milky A16ZA-5204
Transparent A16ZA-5202
Oil-resis-
tant IP65 Milky A16ZA-5204
Transparent A16ZA-5203
Round IP40 Milky A16ZT-5204
Transparent A16ZT-5202
Oil-resis-
tant IP65 Milky A16ZT-5204
Transparent A16ZT-5203
Color Caps
(for IP40) LED indicator/incan- descent lamp/non-
lighted
White A16Z@-5001W Insert one of the following letters into
the box (@).
J: Rectangular
A: Square
T: Round
The Color Cap is usually supplied. Re-
place the Cap if the color is to be
changed.
When using an LED indicator, be sure
to use a Color Cap that matches the lu-
minescent color of the LED.
The materials used for the IP40 and
oil-resistant IP65 are different so be
sure to use a Color Cap that matches
the specifications of the Switch.
Red A16Z@-5001R
Yellow A16Z@-5001Y
LED indicator Pure yellow A16Z@-5001PY
Green A16Z@-5001GY
Incandescent lamp/
non-lighted Blue A16Z@-5001A
Green A16Z@-5001G
Non-lighted Black A16Z@-5011B
Color Caps
(for oil-resistant
IP65)
LED indicator/incan-
descent lamp/non-
lighted
White A16Z@-5101W
Red A16Z@-5101R
Yellow A16Z@-5101Y
LED indicator Pure yellow A16Z@-5101PY
Green A16Z@-5101GY
Incandescent lamp/
non-lighted Blue A16Z@-5101A
Green A16Z@-5101G
Non-lighted Black A16Z@-5111B
Rectangular
Square
Round
Name Appearance Model Applicable types Remarks
Pushbutton
Switch Knob-type Selector
Switch
Key-type
Selector
Switch
Emergency
Stop Switch Indicator
Extractor A3PJ-5080 Yes No No No Yes Convenient for ex-
tracting Pushbut-
ton Switches
Screw Fitting A16Z-3004 Yes Yes Yes Yes Yes Convenient for
ganged installa-
tion.
Tighten to a torque
of 0.39 N ⋅m min.
Extractor A16Z-5080 Yes Yes Yes Yes Yes Convenient for ex-
tracting the Switch
and Lamps.

G-18 Pushbutton Switch A16
Specifications
■Approved Standards
Note: cUL: CSA, C22.2 No. 14
■Approved Standard Ratings
UL, cUL (File No. E41515)
5 A at 125 VAC, 3 A at 250 VAC (general use)
3 A at 30 VDC (resistive)
EN60947-5-1 (Low Voltage Directive)
3 A at 250 VAC (AC12), 3 A at 30 VDC (DC12)
■Ratings
Contacts
Minimum applicable load: 1 mA at 5 VDC
Rated values are obtained from tests conducted under the following
conditions.
1. Load: Resistive load
2. Mounting conditions: No vibration and no shock
3. Temperature: 20±2°C
4. Operating frequency: 20 operations/min
Super-bright LED
Note: The values in parentheses are for models with blue Pushbut-
tons.
Incandescent Lamp
■Characteristics
Note: 1. Set and reset constitute one operation.
2. With LED and incandescent lamp not mounted.
Agency Standards File No.
UL, cUL (See note.) UL508 E41515
--- EN60947-5-1 ---
AC resistive load DC resistive load
3 A at 250 VAC
5 A at 125 VAC
3 A at 30 VDC
Rated
voltage Rated current Operating voltage Internal limiting resistor
5 VDC 30 mA (15 mA) 5 VDC±5% 33 Ω(68 Ω)
12 VDC 15 mA 12 VDC±5% 270 Ω(560 Ω)
24 VDC 10 mA 24 VDC±5% 1600 Ω(2,000 Ω)
Rated voltage Rated current Operating voltage
6 VAC/VDC 60 mA 5 VAC/VDC
14 VAC/VDC 40 mA 12 VAC/VDC
28 VAC/VDC 24 mA 24 VAC/VDC
Item Pushbutton Switch
Allowable operating fre-
quency Mechanical Momentary operation: 120 operations/minute max. (See note 1.) Alternate operation: 60 operations/minute max. (See note 1.)
Electrical 20 operations/minute max. (See note 1.)
Insulation resistance 100 MΩmin. (at 500 VDC)
Dielectric strength 1,000 VAC, 50/60 Hz for 1 min between terminals of same polarity
2,000 VAC, 50/60 Hz for 1 min between terminals of different polarity and also between each terminal and ground
1,000 VAC, 50/60 Hz for 1 min between lamp terminals (See note 2.)
Vibration resistance Malfunction 10 to 55 Hz, 1.5-mm double amplitude (malfunction within 1 ms)
Shock resistance Mechanical 500 m/s2
Malfunction 150 m/s2max. (malfunction within 1 ms)
Durability Mechanical Momentary operation: 2,000,000 operations min.
Alternate operation: 200,000 operations min. (See note 1.)
Electrical 100,000 operations min. (See note 1.)
Ambient temperature Operating: –10°C to 55°C (with no icing or condensation)
Storage: –25°C to 65°C (with no icing or condensation)
Ambient humidity Operating: 35% to 85%
Electric shock protection class Class II
PTI (tracking characteristic) 175
Degree of contamination 3 (IEC947-5-1)
Weight Approx. 10 g (in the case of a lighted DPDT switch with solder terminals)

Pushbutton Switch A16 G-19
Pushbutton
Switches
Screw-Less Clamp
■Operating Characteristics
Note: Lock stroke is only for alternate operation.
■Contact Form
Item Screw-Less Clamp
Recommended wire size 0.5 mm2twisted wire or 0.8 mm-dia. solid wire
Usable wires and tensile
strength
Twi s te d wir e 0.3 mm20.5 mm20.75 mm21.25 mm2
Solid wire 0.5 mm dia. 0.8 mm dia. 1.0 mm dia. ---
Tensile strength 10 N 20 N 30 N 40 N
Length of exposed wire 10 ±1 mm
Type
Features
Pushbutton Switch
IP40 Oil-resistant IP65
SPDT DPDT SPDT DPDT
Operating force (OF) max. 2.45 N 4.41 N 2.94 N 4.91 N
Releasing force (RF) min. 0.29 N
Total travel (TT) Approx. 3 mm
Pretravel (PT) max. 2.5 mm
Lock stroke (LTA) min.
(See note.) 0.5 mm
Name Contact
DPDT
COM
NC
NO

G-20 Pushbutton Switch A16
Nomenclature
Color of Pushbutton
•LED/incandescent models
Red, green, yellow, white, blue
•Neon models
Red, green, white
•Non-lighted models
Red, green, yellow, white, blue, black
Lamp
Terminal Type
•Solder terminals
(tab terminals #110)
•PCB terminals
•Screw-Less Clamp
Pushbutton
Cap
Legend plate
Dispersion plate
Reflective plunger
Switch
•Switch Ratings
5 A at 125 VAC
3 A at 250 VAC
3 A at 30 VDC
Minimum applicable load: 1 mA at 5 VDC
Degree of Protection
•IP40/Oil-resistant IP65
Flange Shape
Square (A16@-A)
Round (A16@-T)
Rectangular (A16@-J, A16@-3J)

Pushbutton Switch A16 G-21
Pushbutton
Switches
Dimensions
Note: All units are in millimeters unless otherwise indicated.
■Lighted/Non-lighted Pushbutton Switches without Voltage Reduction
Unit
The lamp terminal is also provided with non-lighted models.
Solder terminals and tab terminals (#110) can be both used with Lighted and Non-lighted Pushbutton Switches.
Solder terminals (tab terminals #110) Panel Cutouts
See page 25 for panel cutouts
Lamp terminal
Mounting nut
Lock ring
Lamp terminals
24 min.
19 min.
16 dia.
+0.2
0
Solder terminals (tab terminals #110)
Panel Cutouts
See page 25 for panel cutouts
19 min.
19 min.
Lamp terminalsMounting nut
Lock ring
Lamp terminals
16 dia.
+0.2
0
Solder terminals (tab terminals #110)
Lamp terminals
Mounting nut
Lock ring
Lamp terminals Panel Cutouts
See page 25 for panel cutouts
24 min.
19 min.
16 dia.
+0.2
0
Packing (t0.5)
(for oil-resistant IP65 only)
Packing (t0.5)
(for oil-resistant IP65 only)
Packing (t0.5)
(for oil-resistant IP65 only)
Rectangular
A16@-3J
Square
A16@-A
Rectangular
A16@-J

G-22 Pushbutton Switch A16
Solder terminals (tab terminals #110)
Panel Cutouts
See page 25 for panel cutouts
19 min.
19 min.
Lamp terminals
Lamp terminals
Mounting nut
Lock ring
16 dia.
+0.2
0
18 dia.
15.1 dia.
Round
A16@-T
Packing (t0.5)
(for oil-resistant IP65 only)

Pushbutton Switch A16 G-23
Pushbutton
Switches
The following diagrams show the rectangular model as a representative example.
PCB terminals
Screw-Less Clamp
Panel Cutouts
See page 25 for panel cutouts
24 min.
24 min.
Mounting nut
Lock ring
16 dia.
+0.2
0
Lock ring
Mounting ring
Switch
Pushbutton
Case Marking face
Direction-indication arrow
Panel Cutouts
See page 25 for panel cutouts
25 min.
16 dia.
+0.2
0
Recommended panel thickness: 0.5 to 3.2 mm
Switch dismounting lever Lock ring
Mounting ring
Panel Cutouts
See page 25 for panel cutouts
25 min.
33 min.
16 dia.
+0.2
0
Rectangular
A16@-2S
Voltage-reduction lighting,
solder terminals
(tab terminals #110)
Rectangular
A16@-T1, T2
Rectangular
A16@-J
Packing (t0.5)
(for oil-resistant IP65 only)
Packing (t0.5)
(for oil-resistant IP65 only)
Packing (t0.5)
(
for oil-resistant IP65 onl
y)
23 min.
(Dimension A)

G-24 Pushbutton Switch A16
■Lamps
■Accessories, Tools, and Components
4
4
4
0.25
2.54
2.54 2.54
13 max. Cathode (−)
Anode (+)
6 dia. 6 dia.
0.5 dia.
13 max.
13 max. 0.5 dia.
4.9 dia.
Neon Lamp
A16-1N/-2N
Same as
emitting color
LED
A16-5DS@/-12DS@/-24DS@Incandescent Lamp
A16-5/-12/-24
Extractor
A3PJ-5080
A16ZJ-520@A16ZA-520@A16ZT-520@
IP40
IP40
IP65
IP65
Legend Plates
Note: 1. The panel is 0.6 mm thick.
12.9 dia.
13.4 dia.
Color Materials
Polycarbonate resin
Transparent
Milky
Polyacrylate resin
Polyacrylate resin
Note: The standard model is transparent.
2. The panel is made of the materials
listed in the following table.
Degree of
protection
A16Z-3004
Screw Fitting
18 dia.