OMRON A16Switches/ Push Buttons / Indicator Lamps/φ16 Type

OMRON A16 Switches

A16 Pushbutton Switch (Detachable) (Lighted/Non-Lighted) (Cylindrical 16-dia.)/Lineup
A16 Pushbutton Switch (Detachable) (Lighted/Non-Lighted) (Cylindrical 16-dia.)/Dimensions
A16 Pushbutton Switch (Detachable) (Lighted/Non-Lighted) (Cylindrical 16-dia.)/Catalog
A16 Pushbutton Switch (Detachable) (Lighted/Non-Lighted) (Cylindrical 16-dia.)/Specifications
Purchase the OMRON A16 φ16 Type

OMRON A16 Dimensions

/Images/l_1101-25-118531-198x198.jpg

last update: September 9, 2015

• Miniature design of 28.5 mm, the smallest class in the industry.

• Detachable Switch.

• The same contacts can be used for both standard loads and microloads.

• Easy-to-wire terminal arrangement.

• Certified for EN 60947-5-1.

last update: September 9, 2015

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If you have just landed here, this product OMRON A16 Switches,Switches is offered online by Tianin FLD Technical Co.,Ltd. This is an online store providing Switches at wholesale prices for consumers. You can call us or send enquiry, we would give you the prices, packing,deliverty and more detailed information on the A16 We cooperate with DHL,TNT,FEDEX,UPS,EMS,etc.They guarantee to meet your needs in terms of time and money,even if you need your OMRON A16Switches tomorrow morning (aka overnight or next day air) on your desk, 2, 3 days or more.Note to international customers, YES, we ship worldwide.

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OMRON A16 lineup
A16 Pushbutton Switch (Detachable) (Lighted/Non-Lighted) (Cylindrical 16-dia.)/Lineup
last update: March 24, 2017
List of Models

Model
Rectangular Square Round
Solder
terminals A16[]-J Series A16[]-A Series A16[]-T Series
PCB
terminals A16[]-J Series A16[]-A Series A16[]-T Series
Voltage-reduction
lighting solder
terminals A16[]-J Series A16[]-A Series A16[]-T Series
Screw-less clamp
models A16[]-J Series A16[]-A Series A16[]-T Series

Button Colors

The button colors when the buttons are lit and when they are not lit are shown below. Use these colors as reference only.
The actual colors may vary.

Model Number Structure
Model Number Legend

The model numbers used to order sets of Units are illustrated below. One set comprises the Pushbutton, Lamp (lighted models only), Case, and Switch. For information on combinations, refer to Ordering Information on below.

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 Pushbutton, Lamp (lighted models only), Case, and Switch.

Solder Terminal Models
Rectangular Models

A16-[]J

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton color symbol *1
Output Lighting Operating voltage
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
PW: pure white
12 VAC/VDC A16L-J[]M-12D-1 A16L-J[]A-12D-1
24 VAC/VDC A16L-J[]M-24D-1 A16L-J[]A-24D-1
Incandescent
lamp 5 VAC/VDC 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 *2
12 VAC/VDC A16L-J[]M-12-1 A16L-J[]A-12-1
24 VAC/VDC 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
PW: pure white
12 VAC/VDC A16L-J[]M-12D-2 A16L-J[]A-12D-2
24 VAC/VDC A16L-J[]M-24D-2 A16L-J[]A-24D-2
Incandescent
lamp 5 VAC/VDC 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 * 2
12 VAC/VDC A16L-J[]M-12-2 A16L-J[]A-12-2
24 VAC/VDC A16L-J[]M-24-2 A16L-J[]A-24-2
Non-lighted A16-J[]M-2 A16-J[]A-2

*1. Enter the desired color symbol for the Pushbutton in the [].
*2. Black ("B") Pushbuttons are only available for non-lighted models.

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton color
symbol *1
Output Lighting Operating
voltage
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
PW:pure white
12 VAC/VDC A165L-J[]M-12D-1 A165L-J[]A-12D-1
24 VAC/VDC A165L-J[]M-24D-1 A165L-J[]A-24D-1
Incandescent
lamp 5 VAC/VDC 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 *2
12 VAC/VDC A165L-J[]M-12-1 A165L-J[]A-12-1
24 VAC/VDC 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
PW:pure white
12 VAC/VDC A165L-J[]M-12D-2 A165L-J[]A-12D-2
24 VAC/VDC A165L-J[]M-24D-2 A165L-J[]A-24D-2
Incandescent
lamp 5 VAC/VDC 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 *2
12 VAC/VDC A165L-J[]M-12-2 A165L-J[]A-12-2
24 VAC/VDC A165L-J[]M-24-2 A165L-J[]A-24-2
Non-lighted A165-J[]M-2 A165-J[]A-2

*1. Enter the desired color symbol for the Pushbutton in the [].
*2. Black ("B") Pushbuttons are only available for non-lighted models.

Square Models

A16-[]A

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton color symbol *1
Output Lighting Operating voltage
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
PW: pure white
12 VAC/VDC A16L-A[]M-12D-1 A16L-A[]A-12D-1
24 VAC/VDC A16L-A[]M-24D-1 A16L-A[]A-24D-1
Incandescent
lamp 5 VAC/VDC 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 *2
12 VAC/VDC A16L-A[]M-12-1 A16L-A[]A-12-1
24 VAC/VDC 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
PW: pure white
12 VAC/VDC A16L-A[]M-12D-2 A16L-A[]A-12D-2
24 VAC/VDC A16L-A[]M-24D-2 A16L-A[]A-24D-2
Incandescent
lamp 5 VAC/VDC 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 *2
12 VAC/VDC A16L-A[]M-12-2 A16L-A[]A-12-2
24 VAC/VDC A16L-A[]M-24-2 A16L-A[]A-24-2
Non-lighted A16-A[]M-2 A16-A[]A-2

*1. Enter the desired color symbol for the Pushbutton in the [].
*2. Black ("B") Pushbuttons are only available for non-lighted models.

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton color
symbol * 1
Output Lighting Operating
voltage
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
PW:pure white
12 VAC/VDC A165L-A[]M-12D-1 A165L-A[]A-12D-1
24 VAC/VDC A165L-A[]M-24D-1 A165L-A[]A-24D-1
Incandescent
lamp 5 VAC/VDC 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 *2
12 VAC/VDC A165L-A[]M-12-1 A165L-A[]A-12-1
24 VAC/VDC 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
PW:pure white
12 VAC/VDC A165L-A[]M-12D-2 A165L-A[]A-12D-2
24 VAC/VDC A165L-A[]M-24D-2 A165L-A[]A-24D-2
Incandescent
lamp 5 VAC/VDC 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 *2
12 VAC/VDC A165L-A[]M-12-2 A165L-A[]A-12-2
24 VAC/VDC A165L-A[]M-24-2 A165L-A[]A-24-2
Non-lighted A165-A[]M-2 A165-A[]A-2

*1. Enter the desired color symbol for the Pushbutton in the [].
*2. Black ("B") Pushbuttons are only available for non-lighted models.

Round Models

A16[]-T

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton color symbol *1
Output Lighting Operating voltage
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
PW: pure white
12 VAC/VDC A16L-T[]M-12D-1 A16L-T[]A-12D-1
24 VAC/VDC A16L-T[]M-24D-1 A16L-T[]A-24D-1
Incandescent
lamp 5 VAC/VDC 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 *2
12 VAC/VDC A16L-T[]M-12-1 A16L-T[]A-12-1
24 VAC/VDC 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
PW: pure white
12 VAC/VDC A16L-T[]M-12D-2 A16L-T[]A-12D-2
24 VAC/VDC A16L-T[]M-24D-2 A16L-T[]A-24D-2
Incandescent
lamp 5 VAC/VDC 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 *2
12 VAC/VDC A16L-T[]M-12-2 A16L-T[]A-12-2
24 VAC/VDC A16L-T[]M-24-2 A16L-T[]A-24-2
A16-T[]M-2 A16-T[]A-2

*1. Enter the desired color symbol for the Pushbutton in the [].
*2. Black ("B") Pushbuttons are only available for non-lighted models.

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton color
symbol * 1
Output Lighting Operating voltage
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
PW: pure white
12 VAC/VDC A165L-T[]M-12D-1 A165L-T[]A-12D-1
24 VAC/VDC A165L-T[]M-24D-1 A165L-T[]A-24D-1
Incandescent
lamp 5 VAC/VDC 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 * 2
12 VAC/VDC A165L-T[]M-12-1 A165L-T[]A-12-1
24 VAC/VDC 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
PW: pure white
12 VAC/VDC A165L-T[]M-12D-2 A165L-T[]A-12D-2
24 VAC/VDC A165L-T[]M-24D-2 A165L-T[]A-24D-2
Incandescent
lamp 5 VAC/VDC 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 * 2
12 VAC/VDC A165L-T[]M-12-2 A165L-T[]A-12-2
24 VAC/VDC A165L-T[]M-24-2 A165L-T[]A-24-2
Non-lighted A165-T[]M-2 A165-T[]A-2

*1. Enter the desired color symbol for the Pushbutton in the [].
*2. Black ("B") Pushbuttons are only available for non-lighted models.

Models with Reduced-voltage Lighting and Solder Terminals

A16[]-T1Note: Models with voltage ratings of 200 to 220 VAC/DC (T2 models) are listed with models with screw-less clamp

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton color
symbol *
Output Lighting Operating
voltage
SPDT LED
(with built-in
reduced-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
PW: pure white
DPDT 100/110
VAC/VDC A16L-△[]M-T1-2 A16L-△[]A-T1-2

* Enter the desired shape for the Pushbutton in Δ: J (rectangular), A (square), or T (round). Enter the desired color
symbol for the Pushbutton in the [].

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton color
symbol *
Output Lighting Operating
voltage
SPDT LED
(with built-in
reduced-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
PW: pure white
DPDT 100/110
VAC/VDC A165L-△[]M-T1-2 A165L-△[]A-T1-2

* Enter the desired shape for the Pushbutton in Δ: J (rectangular), A (square), or T (round). Enter the desired color
symbol for the Pushbutton in the [].

Screw-less Clamp Models

A16[]-2S

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton color
symbol * 1
Output Lighting Operating
voltage
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
PW: pure white
B: black * 2
12 VAC/VDC A16L-△[]M-12D-2S A16L-△[]A-12D-2S
24 VAC/VDC A16L-△[]M-24D-2S A16L-△[]A-24D-2S
LED
(with built-in
reduced-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

*1. Enter the desired shape for the Pushbutton in Δ: J (rectangular), A (square), or T (round). Enter the desired color
symbol for the Pushbutton in the [].
*2. Black ("B") Pushbuttons are only available for non-lighted models.

Item Momentary operation
(Self-resetting) Alternate operation
(Self-holding) Pushbutton
color symbol * 1
Output Lighting Operating
voltage
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
PW: pure white
B: black * 2
12 VAC/VDC A165L-△[]M-12D-2S A165L-△[]A-12D-2S
24 VAC/VDC A165L-△[]M-24D-2S A165L-△[]A-24D-2S
LED
(with built-in
reduced-voltage
lighting 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

*1. Enter the desired shape for the Pushbutton in Δ: J (rectangular), A (square), or T (round). Enter the desired color
symbol for the Pushbutton in the [].
*2. Black (“B”) Pushbuttons are only available for non-lighted models.

Models with PCB Terminals

A16[]-P

Item Momentary operation
(Self-resetting) Pushbutton color
symbol *1
Output Lighting Operating voltage
SPDT LED 5 VDC A16L-Δ[]M-5D-1P R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
B: black *2
12 VAC/ VDC A16L-Δ[]M-12D-1P
24 VAC/ VDC A16L-Δ[]M-24D-1P
Non-lighted A16-Δ[]M-1P
DPDT LED 5 VDC A16L-Δ[]M-5D-2P
12 VAC/ VDC A16L-Δ[]M-12D-2P
24 VAC/ VDC A16L-Δ[]M-24D-2P
Non-lighted A16-Δ[]M-2P

Note: Contact your OMRON representative about Selector Switches and Key Selector Switches.
*1. Enter the desired shape for the Pushbutton in Δ: J (rectangular), A (square), or T (round). Enter the desired color
symbol for the Pushbutton in the [].
*2. Black (“B”) Pushbuttons are only available for non-lighted models.

Item Momentary operation
(Self-resetting) Pushbutton
color symbol * 1
Output Lighting Operating
voltage
SPDT LED 5 VDC A165L-△[]M-5D-1P R: red
Y: yellow
PY: pure yellow
G: green
A: blue
W: white
B: black * 2
12 VAC/VDC A165L-△[]M-12D-1P
24 VAC/VDC A165L-△[]M-24D-1P
Non-lighted A165-△[]M-1P
DPDT LED 5 VDC A165L-△[]M-5D-2P
12 VAC/VDC A165L-△[]M-12D-2P
24 VAC/VDC A165L-△[]M-24D-2P
Non-lighted A165-△[]M-2P

Note: Contact your OMRON representative about Selector Switches and Key Selector Switches.
*1. Enter the desired shape for the Pushbutton in Δ: J (rectangular), A (square), or T (round). Enter the desired color
symbol for the Pushbutton in the [].
*2. Black (“B”) Pushbuttons are only available for non-lighted models.

Illumination Only and Colored Illumination for Models with LEDs

With illumination only, the color of the lighted surface is the same when the LED is lit and when it is not lit.
Example: Red Illumination

With colored illumination, the color of the lighted surface is white when the LED is not lit and the LED emits another color when it is lit.
Example: Red Illumination

Ordering: For colored illumination, order the Pushbutton, Case, Lamp, and Switch separately.

Color emitted
when lit Operation
Unit Case Lamp (LED) Switch
Red IP40
A16L-[]W
IP66
A165L-[]W
Insert one of the
following symbols
into the box ([]).
J: Rectangular
A: Square
T: Round IP40
• Momentary: A16-C[]M
• Alternate: A16-C[]A
IP66
• Momentary: A165-C[]M
• Alternate: A165-C[]A
Insert one of the following symbols
into the box ([]).
J: Rectangular (2-way guard)
A: Square (2-way guard)
T: Round (projected) A16-[]DSR Specify one of the
following symbols
in the box ([]).
5: 5 VDC
12: 12 VAC/VDC
24: 24 VAC/VDC Refer to
Data Sheet.
Any Switch
can be
mounted.
Yellow A16-[]DSY
Green A16-[]DSG
Blue A16-[]DA

Ordering Individually

Pushbuttons, Lamps, Cases, and Switches 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.

Units

Select a Pushbutton Unit (Pushbutton and Case) and a Switch Unit (Lamp and Switch).

Unit Sets

Sets that combine an Operation Unit and a Case.

Operation Unit

Appearance Classification Model
IP40 Momentary
operation Rectangular (2-way guard) A16-J[]M
Square (2-way guard) A16-A[]M
Round (projected) A16-T[]M
Alternate operation Rectangular (2-way guard) A16-J[]A
Square (2-way guard) A16-A[]A
Round (projected) A16-T[]A
Oil-resistant IP66 Momentary
operation Rectangular (2-way guard) A165-J[]M
Square (2-way guard) A165-A[]M
Round (projected) A165-T[]M
Alternate operation Rectangular (2-way guard) A165-J[]A
Square (2-way guard) A165-A[]A
Round (projected) A165-T[]A

Insert one of the following symbols into the box ([]).

Symbol Color Remarks
R Red LED indicator, incandescent lamp, or non-lighted
Y Yellow
PY Pure yellow
A Blue
W White *
GY Green LED only
G Green Incandescent lamp or non-lighted
B Black Non-lighted only

* Use this pushbutton color if the illumination color of the LED is white or pure white.

Unit Sets

Sets that combine a Switch and a Lamp.

Switch Units with Incandescent Lamps

Appearance Classification Model
Standard loads and microloads Solder terminals SPDT A16L-[]-1
DPDT A16L-[]-2

Switch Units with LED Lamps

Appearance Classification Model
Standard loads and microloads Solder terminals SPDT A16L-△-[]-1
DPDT A16L-△-[]-2
PCB terminals SPDT A16L-△-[]-1P
DPDT A16L-△-[]-2P

Switch Units with Voltage-reduction Lighting (Soldered Terminals)

Appearance Classification Operating voltage Model
Standard loads and microloads SPDT 100/110 VAC/VDC A16L-△-T1-1
DPDT 100/110 VAC/VDC A16L-△-T1-2

Note: An LED rated 24 VAC/VDC is built-in.

Switch Units with Screw-less Clamp Connectors

Appearance Classification Model
Standard loads
and microloads DPDT Non-lighted A16-2S
Lighted No voltage-reduction lighting A16L-△-[]-2S
Voltage-reduction lighting
Note. 100/110 VAC/VDC A16L-△-T1-2S
200/220 VAC/VDC A16L-△-T2-2S

Note: The 100-V models and 200-V models an LED rated 24 VAC/VDC is built-in.

Insert symbols in Δ and [].
Δ

Symbol Color
R Red
Y Yellow
G Green
W White
A Blue

Note: If the Pushbutton is pure yellow (PY), use white (W) for the Switch Unit.

[]

Symbol Type Operating voltage
5 Incandescent 5 VAC/VDC
12 12 VAC/VDC
24 24 VAC/VDC
5D LED 5 VDC
12D 12 VAC/VDC
24D 24 VAC/VDC

Note: If the Pushbutton is pure yellow (PY), use white (W) for the Switch Unit.

Ordering Individually

Pushbuttons, Lamps, Cases, and Switches 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.

Pushbuttons
LED

Degree of protection IP40 Oil-resistant IP66
Color Rectangular Square Round Rectangular Square Round
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-JGY A165L-AGY A165L-TGY
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

* Use this pushbutton color if the illumination color of the LED is white or pure white.

Incandescent Lamps (With the exception of green, the Units are the same as for LEDs.)

Degree of protection IP40 Oil-resistant IP66
Color Rectangular Square Round Rectangular Square Round
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

Non-lighted (Same as Units for incandescent lamps.)

Degree of protection IP40 Oil-resistant IP66
Color Rectangular Square Round Rectangular Square Round
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

Lamps
LED

Operating voltage High brightness
Light color 5 VDC 12 VAC/VDC 24 VAC/VDC
Red A16-5DSR A16-12DSR A16-24DSR
Yellow A16-5DSY A16-12DSY A16-24DSY
Green A16-5DSG A16-12DSG A16-24DSG
White * A16-5DSW A16-12DSW A16-24DSW
Blue A16-5DA A16-12DA A16-24DA
Pure white A16-5DPW A16-12DPW A16-24DPW

Note: 1. If an LED lamp with normal brightness is needed, select a Lamp used in the A3C.
2. For voltage-reduction lighting use the A16-24D[]. Only 24 VAC/VDC LED lamps can be used.
* Use the white LED together with white or pure yellow Pushbuttons.

Incandescent Lamp

Appearance Operating voltage Model
5 VAC/VDC A16-5
12 VAC/VDC A16-12
24 VAC/VDC A16-24

Cases

Appearance Classification Model
IP40 Momentary operation Rectangular (2-way guard) A16-CJM
Square (2-way guard) A16-CAM
Round (projected) A16-CTM
Alternate operation Rectangular (2-way guard) A16-CJA
Square (2-way guard) A16-CAA
Round (projected) A16-CTA
Oil-resistant IP66 Momentary operation Rectangular (2-way guard) A165-CJM
Square (2-way guard) A165-CAM
Round (projected) A165-CTM
Alternate operation Rectangular (2-way guard) A165-CJA
Square (2-way guard) A165-CAA
Round (projected) A165-CTA

Switches

Appearance Classification Model
Solder terminal Lighted/non-lighted
(common use) Standard load/microload
(common use) SPDT A16-1
DPDT A16-2
PCB terminal SPDT A16-1P
DPDT A16-2P
Screw-less Clamp DPDT A16-2S

Switches with Reduced-voltage Lighting

Appearance Classification Model
Solder terminal 100 V Standard load/microload
(common use) SPDT A16-T1-1
DPDT A16-T1-2
Screw-less Clamp 100 V DPDT A16-T1-2S
200 V A16-T2-2S

Note: For a Switch with Reduced-voltage Lighting, use the A16-24D[].

Accessories, Replacements, and Tools
Accessories

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.
Can be operated with the Dust Cover attached.
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.
Protective structure: IP40
Color: Black
For square models A16ZA-3003
For round models A16ZT-3003

Replacements

Name Appearance Classification Model Remarks
Legend
Plates Rectangular Oil-resistant IP66 Milky A16ZJ-5204 A Legend Plate is
provided as a standard
feature with the
Operation Unit. However,
if the Operation Unit is
black (non-lighted models
only), a Legend Plate is
not provided.
Square Oil-resistant IP66 Milky A16ZA-5204
Round Oil-resistant IP66 Milky A16ZT-5204
Color
Caps
(for IP40) LED lamp/
incandescent lamp/
nonlighted White A16Z[]-5001W Insert one of the
following letters
into the box ([]).
J: Rectangular
A: Square
T: Round
The Color Cap is usually
supplied. Replace the Cap
if the color is to be
changed.
When using an LED
indicator, be sure to use
a Color Cap that
matches the luminescent
color of the LED.
The materials used for
the IP40 and oil-resistant
IP66 are different so be
sure to use a Color Cap
that matches the
specifications of the
Switch.
Red A16Z[]-5001R
Yellow A16Z[]-5001Y
Pure yellow A16Z[]-5001PY
Blue A16Z[]-5001A
LED lamp Green A16Z[]-5001GY
Incandescent lamp/non-lighted Green A16Z[]-5001G
Non-lighted Black A16Z[]-5011B
Color
Caps
(for oil-
resistant
IP66) LED lamp/
incandescent lamp/
nonlighted White A16Z[]-5101W
Red A16Z[]-5101R
Yellow A16Z[]-5101Y
Pure yellow A16Z[]-5101PY
Blue A16Z[]-5101A
LED lamp Green A16Z[]-5101GY
Incandescent lamp/non-lighted Green A16Z[]-5101G
Non-lighted Black A16Z[]-5111B

Tools

Name Appearance Model Appllicable types Remarks
Push-
button
Switch Knob-type
Selector
Switch Key-type
Selector
Switch Emergency
Stop
Switch Indicator
Operation
Unit
Extractor A3PJ-5080 ● -- -- -- ● Convenient for
extracting
Pushbutton
Switches
Screw
Fitting A16Z-3004 ● ● ● ● ● Convenient for
ganged installation.
Socket
Unit lamp
Extractor A16Z-5080 ● ● ● ● ● Convenient for
extracting the
Switch and
lamps.

last update: March 24, 2017

OMRON A16 dimension
A16 Pushbutton Switch (Detachable) (Lighted/Non-Lighted) (Cylindrical 16-dia.)/Dimensions
last update: September 04, 2014

• The Dimension shows 2-switch outputs.
• The lamp terminal is also provided with non-lighted models.

Rectangular
A16[]-J
Solder terminals (tab terminals #110)

See below for panel cutouts

Square
A16[]-A
Solder terminals (tab terminals #110)

See below for panel cutouts

Round
A16[]-T
Solder terminals (tab terminals #110)

See below for panel cutouts

• The Dimension shows 2-switch outputs.
• The lamp terminal is also provided with non-lighted models.
• A rectangular model is listed as an example.

Rectangular
A16[]-J[]-[]P
PCB terminals

See below for panel cutouts

Rectangular
A16[]-J[]-T1
Voltage-reduction lighting, solder terminals (tab terminals #110)

Rectangular
A16[]-J[]-2S, T1-2S, T2-2S
Screw-less Clamp

Lamps
LED
A16-5D[]/-12D[]/-24D[]

* The voltage display surface is the same color as the illumination color. The opposite surface is light gray.
(For pure white, the entire surface is light gray.)

Incandescent Lamp
A16-5/-12/-24

Accessories, Tools, and Components
Extractor
A3PJ-5080

Legend Plates
A16ZJ-520[]

A16ZA-520[]

A16ZT-520[]

Note: 1. The panel is 0.6 mm thick. 2. The panel is made of the materials listed in the following table.

Screw Fitting
A16Z-3004

Panel Plugs (Black Resin)

Select the Plug that fits the panel design and mount from the front of the Panel. Panel cutouts are the same as those for Switches.
Protective structure: IP40
Color: Black

Lock Ring

Socket Unit Lamp Extractor
A16Z-5080

Panel Cutouts
Solder Terminals and Screw-less Clamp Connectors

Note:• Make sure the thickness of the mounting panel is between 0.5 and 3.2 mm. If, however, a Switch Guard or Dust
Cover is used, the thickness of the mounting panel must be between 0.5 and 2 mm.
• If the panel is to be finished with coating, etc., make sure that the panel meets the specified dimensions after
coating.
• Figures in parentheses are for Screw-less Clamp Connectors.

PCB Terminals

Note:• Ensure that the variation in the distance between the centers of neighboring mounting holes is less than ±0.1
mm.
• Make sure the thickness of the mounting panel is between 0.5 and 3.2 mm. If, however, a Switch Guard or Dust
Cover is used, the thickness of the mounting panel must be between 0.5 and 2 mm.
• If the panel is to be finished with coating, etc., make sure that the panel meets the specified dimensions after
coating.

Accessory Dimensions Mounted
Dimensions with Switch Guard Installed
Rectangular
A16ZJ-5050

Note: This example is for when X is 4.5 mm.
If X is not required, the Switches can be mounted with a minimum vertical installation pitch of 24 mm min.

Square
A16ZA-5050

Note: This example is for when X is 4.5 mm.
If X is not required, the Switches can be mounted with a minimum vertical installation pitch of 24 mm min.
If PCB terminals are used, provide X must be 24 mm or larger.

Dust Covers
Rectangular
A16ZJ-5060

Square
A16ZA-5060

Round
A16ZT-5060

last update: September 04, 2014

OMRON A16 catalog
A16 Pushbutton Switch (Detachable) (Lighted/Non-Lighted) (Cylindrical 16-dia.)/Catalog

Catalog

CAD

English
Global Edition

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.
*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.

Catalog Name Catalog Number
[size] Last Update

A16 Data Sheet -
[5006KB] Dec 06, 201820181206 A16 Data Sheet

OMRON A16 specification
A16 Pushbutton Switch (Detachable) (Lighted/Non-Lighted) (Cylindrical 16-dia.)/Specifications
last update: September 09, 2015
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)
Note: Certification has been obtained for the Switch.
For detailed information on individual products that have received certification, consult your supplier.

TÜV (EN60947-5-1) (Low Voltage Directive)

3 A at 250 VAC
3 A at 30 VDC

CCC (GB14048.5)

5 A at 125 VAC
3 A at 250 VAC
3 A at 30 VDC

Ratings
Switch Ratings

Rated voltage Resistive load
125 VAC 5A
250 VAC 3A
30 VDC 3A

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

Contact Form

Name Contact
DPDT

Super-bright LED

Rated voltage Rated current Operating voltage Internal limiting resistor
5 VDC 8 mA 5 VDC ± 5% Red, yellow, white : 300 Ω
Green, blue, pure white : 160 Ω
12 VAC/VDC 12 VAC/VDC ± 5% Red, yellow, white : 1 k Ω
Green, blue, pure white : 910 Ω
24VAC/ VDC 24 VAC/VDC ± 5% 2.4 k Ω

Incandescent Lamp

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

Voltage-reduction Unit (LED Lamp)

Rated voltage Operating voltage Applicable lamp
110 VAC/VDC 100/110 VAC/VDC (90 to 121 V) A16-24DS[]
LED Lamp
220 VAC/VDC 200/220 VAC/VDC (180 to 242 V)

Characteristics
Socket Unit

Item Pushbutton Switch
Allowable
operating
frequency Mechanical Momentary operation: 120 operations/minute max.
Alternate operation: 60 operations/minute max. *1
Electrical 20 operations/minute max. *1
Insulation resistance 100 MΩ min. (at 500V DC)
Contact resistance 100 mΩ max. (initial value)
Dielectric
strength Between terminals
of same polarity 1,000 VAC, 50/60 Hz for 1 minute
Between terminals
of different polarity 2,000 VAC, 50/60 Hz for 1 minute
Between each terminal
and ground 2,000 VAC, 50/60 Hz for 1 minute
Between lamp terminals 1,000 VAC, 50/60 Hz for 1 minute *2
Vibration
resistance Malfunction 10 to 55 Hz, 1.5-mm double amplitude (malfunction within 1 ms)
Shock
resistance Destruction 500 m/s² max.
Malfunction 150 m/s² max. (malfunction within 1 ms)
Durability Mechanical Momentary operation: 2,000,000 operations min.
Alternate operation: 200,000 operations min. *1
Electrical 100,000 operations min. *1
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)
Degree of protection IP40: A16, Oil-resistant IP66: A165 *3
Ambient operating temperature -10 °C to 55 °C (with no icing or condensation)
Ambient operating humidity 35% to 85%RH
Ambient storage temperature -25 °C to 65 °C (with no icing or condensation)

*1. Set and reset constitute one operation.
*2. With LED and incandescent lamp not mounted.
*3. Degree of protection from the front of the panel.

Screw-less Clamp

Item Screw-Less Clamp
Recommended wire size 0.5 mm² twisted wire or 0.8 mm-dia. solid wire
Usable wires and
tensile strength Twisted wire 0.3 mm² 0.5 mm² 0.75 mm² 1.25 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 ±1mm
Compliant standards JIS C 2811 Terminal Blocks for Industrial Use

Operating Characteristics

Type Pushbutton Switch
Characteristics IP40 Oil-resistant IP66
Operating force (OF) max. 4.41 N 4.91 N
Releasing force (RF) min. 0.29 N
Total travel (TT) Approx. 3 mm
Pretravel (PT) max. 2.5 mm
Lock travel alternate (LTA) min. * 0.5 mm

* Alternate operation models only.

last update: September 09, 2015

NO. A16

TYPE:Push Buttons / Indicator Lamps φ16 Type Copyright Statement

DATE:2021-06-08

Associated products:
TP70 On-site Flexible Rod Switch/Features A165S / W Knob-type Selector Switch (Detachable) (Cylindrical 16-dia.)/Features

	Model
Rectangular	Square	Round
Solder terminals		A16[]-J Series	A16[]-A Series	A16[]-T Series
PCB terminals		A16[]-J Series	A16[]-A Series	A16[]-T Series
Voltage-reduction lighting solder terminals		A16[]-J Series	A16[]-A Series	A16[]-T Series
Screw-less clamp models		A16[]-J Series	A16[]-A Series	A16[]-T Series

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	*Pushbutton color symbol 1**
Output	Lighting	Operating voltage
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 PW: pure white
12 VAC/VDC	A16L-J[]M-12D-1	A16L-J[]A-12D-1
24 VAC/VDC	A16L-J[]M-24D-1	A16L-J[]A-24D-1
Incandescent lamp	5 VAC/VDC	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 *2
12 VAC/VDC	A16L-J[]M-12-1	A16L-J[]A-12-1
24 VAC/VDC	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 PW: pure white
12 VAC/VDC	A16L-J[]M-12D-2	A16L-J[]A-12D-2
24 VAC/VDC	A16L-J[]M-24D-2	A16L-J[]A-24D-2
Incandescent lamp	5 VAC/VDC	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 * 2
12 VAC/VDC	A16L-J[]M-12-2	A16L-J[]A-12-2
24 VAC/VDC	A16L-J[]M-24-2	A16L-J[]A-24-2
Non-lighted	A16-J[]M-2	A16-J[]A-2

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	Pushbutton color symbol *1
Output	Lighting	Operating voltage
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 PW:pure white
12 VAC/VDC	A165L-J[]M-12D-1	A165L-J[]A-12D-1
24 VAC/VDC	A165L-J[]M-24D-1	A165L-J[]A-24D-1
Incandescent lamp	5 VAC/VDC	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 *2
12 VAC/VDC	A165L-J[]M-12-1	A165L-J[]A-12-1
24 VAC/VDC	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 PW:pure white
12 VAC/VDC	A165L-J[]M-12D-2	A165L-J[]A-12D-2
24 VAC/VDC	A165L-J[]M-24D-2	A165L-J[]A-24D-2
Incandescent lamp	5 VAC/VDC	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 *2
12 VAC/VDC	A165L-J[]M-12-2	A165L-J[]A-12-2
24 VAC/VDC	A165L-J[]M-24-2	A165L-J[]A-24-2
Non-lighted	A165-J[]M-2	A165-J[]A-2

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	*Pushbutton color symbol 1**
Output	Lighting	Operating voltage
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 PW: pure white
12 VAC/VDC	A16L-A[]M-12D-1	A16L-A[]A-12D-1
24 VAC/VDC	A16L-A[]M-24D-1	A16L-A[]A-24D-1
Incandescent lamp	5 VAC/VDC	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 *2
12 VAC/VDC	A16L-A[]M-12-1	A16L-A[]A-12-1
24 VAC/VDC	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 PW: pure white
12 VAC/VDC	A16L-A[]M-12D-2	A16L-A[]A-12D-2
24 VAC/VDC	A16L-A[]M-24D-2	A16L-A[]A-24D-2
Incandescent lamp	5 VAC/VDC	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 *2
12 VAC/VDC	A16L-A[]M-12-2	A16L-A[]A-12-2
24 VAC/VDC	A16L-A[]M-24-2	A16L-A[]A-24-2
	Non-lighted	A16-A[]M-2	A16-A[]A-2

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	Pushbutton color symbol * 1
Output	Lighting	Operating voltage
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 PW:pure white
12 VAC/VDC	A165L-A[]M-12D-1	A165L-A[]A-12D-1
24 VAC/VDC	A165L-A[]M-24D-1	A165L-A[]A-24D-1
Incandescent lamp	5 VAC/VDC	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 *2
12 VAC/VDC	A165L-A[]M-12-1	A165L-A[]A-12-1
24 VAC/VDC	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 PW:pure white
12 VAC/VDC	A165L-A[]M-12D-2	A165L-A[]A-12D-2
24 VAC/VDC	A165L-A[]M-24D-2	A165L-A[]A-24D-2
Incandescent lamp	5 VAC/VDC	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 *2
12 VAC/VDC	A165L-A[]M-12-2	A165L-A[]A-12-2
24 VAC/VDC	A165L-A[]M-24-2	A165L-A[]A-24-2
Non-lighted	A165-A[]M-2	A165-A[]A-2

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	*Pushbutton color symbol 1**
Output	Lighting	Operating voltage
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 PW: pure white
12 VAC/VDC	A16L-T[]M-12D-1	A16L-T[]A-12D-1
24 VAC/VDC	A16L-T[]M-24D-1	A16L-T[]A-24D-1
Incandescent lamp	5 VAC/VDC	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 *2
12 VAC/VDC	A16L-T[]M-12-1	A16L-T[]A-12-1
24 VAC/VDC	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 PW: pure white
12 VAC/VDC	A16L-T[]M-12D-2	A16L-T[]A-12D-2
24 VAC/VDC	A16L-T[]M-24D-2	A16L-T[]A-24D-2
Incandescent lamp	5 VAC/VDC	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 *2
12 VAC/VDC	A16L-T[]M-12-2	A16L-T[]A-12-2
24 VAC/VDC	A16L-T[]M-24-2	A16L-T[]A-24-2
	A16-T[]M-2	A16-T[]A-2

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	Pushbutton color symbol * 1
Output	Lighting	Operating voltage
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 PW: pure white
12 VAC/VDC	A165L-T[]M-12D-1	A165L-T[]A-12D-1
24 VAC/VDC	A165L-T[]M-24D-1	A165L-T[]A-24D-1
Incandescent lamp	5 VAC/VDC	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 * 2
12 VAC/VDC	A165L-T[]M-12-1	A165L-T[]A-12-1
24 VAC/VDC	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 PW: pure white
12 VAC/VDC	A165L-T[]M-12D-2	A165L-T[]A-12D-2
24 VAC/VDC	A165L-T[]M-24D-2	A165L-T[]A-24D-2
Incandescent lamp	5 VAC/VDC	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 * 2
12 VAC/VDC	A165L-T[]M-12-2	A165L-T[]A-12-2
24 VAC/VDC	A165L-T[]M-24-2	A165L-T[]A-24-2
Non-lighted	A165-T[]M-2	A165-T[]A-2

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	Pushbutton color symbol *
Output	Lighting	Operating voltage
SPDT	LED (with built-in reduced-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 PW: pure white
DPDT	100/110 VAC/VDC	A16L-△[]M-T1-2	A16L-△[]A-T1-2

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	Pushbutton color symbol *
Output	Lighting	Operating voltage
SPDT	LED (with built-in reduced-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 PW: pure white
DPDT	100/110 VAC/VDC	A165L-△[]M-T1-2	A165L-△[]A-T1-2

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	Pushbutton color symbol * 1
Output	Lighting	Operating voltage
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 PW: pure white B: black * 2
12 VAC/VDC	A16L-△[]M-12D-2S	A16L-△[]A-12D-2S
24 VAC/VDC	A16L-△[]M-24D-2S	A16L-△[]A-24D-2S
LED (with built-in reduced-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

Item	Momentary operation (Self-resetting)	Alternate operation (Self-holding)	Pushbutton color symbol * 1
Output	Lighting	Operating voltage
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 PW: pure white B: black * 2
12 VAC/VDC	A165L-△[]M-12D-2S	A165L-△[]A-12D-2S
24 VAC/VDC	A165L-△[]M-24D-2S	A165L-△[]A-24D-2S
LED (with built-in reduced-voltage lighting 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

Item	Momentary operation (Self-resetting)	Pushbutton color symbol *1
Output	Lighting	Operating voltage
SPDT	LED	5 VDC	A16L-Δ[]M-5D-1P	R: red Y: yellow PY: pure yellow G: green A: blue W: white B: black *2
12 VAC/ VDC	A16L-Δ[]M-12D-1P
24 VAC/ VDC	A16L-Δ[]M-24D-1P
Non-lighted	A16-Δ[]M-1P
DPDT	LED	5 VDC	A16L-Δ[]M-5D-2P
12 VAC/ VDC	A16L-Δ[]M-12D-2P
24 VAC/ VDC	A16L-Δ[]M-24D-2P
Non-lighted	A16-Δ[]M-2P

Item	Momentary operation (Self-resetting)	Pushbutton color symbol * 1
Output	Lighting	Operating voltage
SPDT	LED	5 VDC	A165L-△[]M-5D-1P	R: red Y: yellow PY: pure yellow G: green A: blue W: white B: black * 2
12 VAC/VDC	A165L-△[]M-12D-1P
24 VAC/VDC	A165L-△[]M-24D-1P
Non-lighted	A165-△[]M-1P
DPDT	LED	5 VDC	A165L-△[]M-5D-2P
12 VAC/VDC	A165L-△[]M-12D-2P
24 VAC/VDC	A165L-△[]M-24D-2P
Non-lighted	A165-△[]M-2P

Color emitted when lit	Operation Unit	Case	Lamp (LED)	Switch
Red	IP40 A16L-[]W IP66 A165L-[]W Insert one of the following symbols into the box ([]). J: Rectangular A: Square T: Round	IP40 • Momentary: A16-C[]M • Alternate: A16-C[]A IP66 • Momentary: A165-C[]M • Alternate: A165-C[]A Insert one of the following symbols into the box ([]). J: Rectangular (2-way guard) A: Square (2-way guard) T: Round (projected)	A16-[]DSR	Specify one of the following symbols in the box ([]). 5: 5 VDC 12: 12 VAC/VDC 24: 24 VAC/VDC	Refer to Data Sheet. Any Switch can be mounted.
Yellow	A16-[]DSY
Green	A16-[]DSG
Blue	A16-[]DA

Appearance	Classification	Model
	IP40	Momentary operation	Rectangular (2-way guard)	A16-J[]M
Square (2-way guard)	A16-A[]M
Round (projected)	A16-T[]M
Alternate operation	Rectangular (2-way guard)	A16-J[]A
Square (2-way guard)	A16-A[]A
Round (projected)	A16-T[]A
Oil-resistant IP66	Momentary operation	Rectangular (2-way guard)	A165-J[]M
Square (2-way guard)	A165-A[]M
Round (projected)	A165-T[]M
Alternate operation	Rectangular (2-way guard)	A165-J[]A
Square (2-way guard)	A165-A[]A
Round (projected)	A165-T[]A

Symbol	Color	Remarks
R	Red	LED indicator, incandescent lamp, or non-lighted
Y	Yellow
PY	Pure yellow
A	Blue
W	White *
GY	Green	LED only
G	Green	Incandescent lamp or non-lighted
B	Black	Non-lighted only

Appearance	Classification	Model
	Standard loads and microloads	Solder terminals	SPDT	A16L-[]-1
DPDT	A16L-[]-2

Appearance	Classification	Model
	Standard loads and microloads	Solder terminals	SPDT	A16L-△-[]-1
DPDT	A16L-△-[]-2
PCB terminals	SPDT	A16L-△-[]-1P
DPDT	A16L-△-[]-2P

Appearance	Classification	Operating voltage	Model
	Standard loads and microloads	SPDT	100/110 VAC/VDC	A16L-△-T1-1
DPDT	100/110 VAC/VDC	A16L-△-T1-2

Appearance	Classification	Model
	Standard loads and microloads	DPDT	Non-lighted	A16-2S
Lighted	No voltage-reduction lighting	A16L-△-[]-2S
Voltage-reduction lighting Note.	100/110 VAC/VDC	A16L-△-T1-2S
200/220 VAC/VDC	A16L-△-T2-2S

Symbol	Color
R	Red
Y	Yellow
G	Green
W	White
A	Blue

Symbol	Type	Operating voltage
5	Incandescent	5 VAC/VDC
12	12 VAC/VDC
24	24 VAC/VDC
5D	LED	5 VDC
12D	12 VAC/VDC
24D	24 VAC/VDC

Degree of protection	IP40	Oil-resistant IP66
Color	Rectangular	Square	Round	Rectangular	Square	Round
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-JGY	A165L-AGY	A165L-TGY
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

Degree of protection	IP40	Oil-resistant IP66
Color	Rectangular	Square	Round	Rectangular	Square	Round
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

Degree of protection	IP40	Oil-resistant IP66
Color	Rectangular	Square	Round	Rectangular	Square	Round
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

Operating voltage	High brightness
Light color	5 VDC	12 VAC/VDC	24 VAC/VDC
Red	A16-5DSR	A16-12DSR	A16-24DSR
Yellow	A16-5DSY	A16-12DSY	A16-24DSY
Green	A16-5DSG	A16-12DSG	A16-24DSG
White *	A16-5DSW	A16-12DSW	A16-24DSW
Blue	A16-5DA	A16-12DA	A16-24DA
Pure white	A16-5DPW	A16-12DPW	A16-24DPW

Appearance	Operating voltage	Model
	5 VAC/VDC	A16-5
12 VAC/VDC	A16-12
24 VAC/VDC	A16-24

Appearance	Classification	Model
	IP40	Momentary operation	Rectangular (2-way guard)	A16-CJM
Square (2-way guard)	A16-CAM
Round (projected)	A16-CTM
Alternate operation	Rectangular (2-way guard)	A16-CJA
Square (2-way guard)	A16-CAA
Round (projected)	A16-CTA
Oil-resistant IP66	Momentary operation	Rectangular (2-way guard)	A165-CJM
Square (2-way guard)	A165-CAM
Round (projected)	A165-CTM
Alternate operation	Rectangular (2-way guard)	A165-CJA
Square (2-way guard)	A165-CAA
Round (projected)	A165-CTA

Appearance	Classification	Model
Solder terminal	Lighted/non-lighted (common use)	Standard load/microload (common use)	SPDT	A16-1
DPDT	A16-2
PCB terminal	SPDT	A16-1P
DPDT	A16-2P
Screw-less Clamp	DPDT	A16-2S

Appearance	Classification	Model
Solder terminal	100 V	Standard load/microload (common use)	SPDT	A16-T1-1
DPDT	A16-T1-2
Screw-less Clamp	100 V	DPDT	A16-T1-2S
200 V	A16-T2-2S

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. Can be operated with the Dust Cover attached.
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. Protective structure: IP40 Color: Black
For square models	A16ZA-3003
For round models	A16ZT-3003

Name	Appearance	Classification	Model	Remarks
Legend Plates		Rectangular	Oil-resistant IP66	Milky	A16ZJ-5204	A Legend Plate is provided as a standard feature with the Operation Unit. However, if the Operation Unit is black (non-lighted models only), a Legend Plate is not provided.
Square	Oil-resistant IP66	Milky	A16ZA-5204
Round	Oil-resistant IP66	Milky	A16ZT-5204
Color Caps (for IP40)		LED lamp/ incandescent lamp/ nonlighted	White	A16Z[]-5001W	Insert one of the following letters into the box ([]). J: Rectangular A: Square T: Round The Color Cap is usually supplied. Replace the Cap if the color is to be changed. When using an LED indicator, be sure to use a Color Cap that matches the luminescent color of the LED. The materials used for the IP40 and oil-resistant IP66 are different so be sure to use a Color Cap that matches the specifications of the Switch.
Red	A16Z[]-5001R
Yellow	A16Z[]-5001Y
Pure yellow	A16Z[]-5001PY
Blue	A16Z[]-5001A
LED lamp	Green	A16Z[]-5001GY
Incandescent lamp/non-lighted	Green	A16Z[]-5001G
Non-lighted	Black	A16Z[]-5011B
Color Caps (for oil- resistant IP66)	LED lamp/ incandescent lamp/ nonlighted	White	A16Z[]-5101W
Red	A16Z[]-5101R
Yellow	A16Z[]-5101Y
Pure yellow	A16Z[]-5101PY
Blue	A16Z[]-5101A
LED lamp	Green	A16Z[]-5101GY
Incandescent lamp/non-lighted	Green	A16Z[]-5101G
Non-lighted	Black	A16Z[]-5111B

Name	Appearance	Model	Appllicable types	Remarks
Push- button Switch	Knob-type Selector Switch	Key-type Selector Switch	Emergency Stop Switch	Indicator
Operation Unit Extractor		A3PJ-5080	●	--	--	--	●	Convenient for extracting Pushbutton Switches
Screw Fitting		A16Z-3004	●	●	●	●	●	Convenient for ganged installation.
Socket Unit lamp Extractor		A16Z-5080	●	●	●	●	●	Convenient for extracting the Switch and lamps.

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.
*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.
Catalog Name	Catalog Number [size]	Last Update
A16 Data Sheet	- [5006KB]	Dec 06, 201820181206	A16 Data Sheet

Rated voltage	Resistive load
125 VAC	5A
250 VAC	3A
30 VDC	3A

Name	Contact
DPDT

Rated voltage	Rated current	Operating voltage	Internal limiting resistor
5 VDC	8 mA	5 VDC ± 5%	Red, yellow, white : 300 Ω Green, blue, pure white : 160 Ω
12 VAC/VDC	12 VAC/VDC ± 5%	Red, yellow, white : 1 k Ω Green, blue, pure white : 910 Ω
24VAC/ VDC	24 VAC/VDC ± 5%	2.4 k 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

Rated voltage	Operating voltage	Applicable lamp
110 VAC/VDC	100/110 VAC/VDC (90 to 121 V)	A16-24DS[] LED Lamp
220 VAC/VDC	200/220 VAC/VDC (180 to 242 V)

Item	Pushbutton Switch
Allowable operating frequency	Mechanical	Momentary operation: 120 operations/minute max. Alternate operation: 60 operations/minute max. *1
Electrical	20 operations/minute max. *1
Insulation resistance	100 MΩ min. (at 500V DC)
Contact resistance	100 mΩ max. (initial value)
Dielectric strength	Between terminals of same polarity	1,000 VAC, 50/60 Hz for 1 minute
Between terminals of different polarity	2,000 VAC, 50/60 Hz for 1 minute
Between each terminal and ground	2,000 VAC, 50/60 Hz for 1 minute
Between lamp terminals	1,000 VAC, 50/60 Hz for 1 minute *2
Vibration resistance	Malfunction	10 to 55 Hz, 1.5-mm double amplitude (malfunction within 1 ms)
Shock resistance	Destruction	500 m/s² max.
Malfunction	150 m/s² max. (malfunction within 1 ms)
Durability	Mechanical	Momentary operation: 2,000,000 operations min. Alternate operation: 200,000 operations min. *1
Electrical	100,000 operations min. *1
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)
Degree of protection	IP40: A16, Oil-resistant IP66: A165 *3
Ambient operating temperature	-10 °C to 55 °C (with no icing or condensation)
Ambient operating humidity	35% to 85%RH
Ambient storage temperature	-25 °C to 65 °C (with no icing or condensation)

Item	Screw-Less Clamp
Recommended wire size	0.5 mm² twisted wire or 0.8 mm-dia. solid wire
Usable wires and tensile strength	Twisted wire	0.3 mm²	0.5 mm²	0.75 mm²	1.25 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 ±1mm
Compliant standards	JIS C 2811 Terminal Blocks for Industrial Use

Type	Pushbutton Switch
Characteristics	IP40	Oil-resistant IP66
Operating force (OF) max.	4.41 N	4.91 N
Releasing force (RF) min.	0.29 N
Total travel (TT)	Approx. 3 mm
Pretravel (PT) max.	2.5 mm
Lock travel alternate (LTA) min. *	0.5 mm

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OMRON A16Switches/ Push Buttons / Indicator Lamps/φ16 Type

OMRON A16 Dimensions

Purchase the OMRON φ16 Type Please fill in the following

OMRON A16 lineup

List of Models

Button Colors

Model Number Structure

Model Number Legend

Ordering Information

Ordering as a Set

Solder Terminal Models

Rectangular Models

Square Models

Round Models

Models with Reduced-voltage Lighting and Solder Terminals

Screw-less Clamp Models

Models with PCB Terminals

Illumination Only and Colored Illumination for Models with LEDs

Ordering Individually

Units

Unit Sets

Operation Unit

Unit Sets

Switch Units with Incandescent Lamps

Switch Units with LED Lamps

Switch Units with Voltage-reduction Lighting (Soldered Terminals)

Switch Units with Screw-less Clamp Connectors

Insert symbols in Δ and [].

Δ

[]

Ordering Individually

Pushbuttons

LED

Incandescent Lamps (With the exception of green, the Units are the same as for LEDs.)

Non-lighted (Same as Units for incandescent lamps.)

Lamps

LED

Incandescent Lamp

Cases

Switches

Switches with Reduced-voltage Lighting

Accessories, Replacements, and Tools

Accessories

Replacements

Tools

OMRON A16 dimension

RectangularA16[]-JSolder terminals (tab terminals #110)

SquareA16[]-ASolder terminals (tab terminals #110)

RoundA16[]-TSolder terminals (tab terminals #110)

RectangularA16[]-J[]-[]PPCB terminals

RectangularA16[]-J[]-T1Voltage-reduction lighting, solder terminals (tab terminals #110)

RectangularA16[]-J[]-2S, T1-2S, T2-2SScrew-less Clamp

Lamps

LEDA16-5D[]/-12D[]/-24D[]

Incandescent LampA16-5/-12/-24

Accessories, Tools, and Components

ExtractorA3PJ-5080

Legend Plates

A16ZJ-520[]

A16ZA-520[]

A16ZT-520[]

Screw FittingA16Z-3004

Panel Plugs (Black Resin)

Lock Ring

Socket Unit Lamp ExtractorA16Z-5080

Panel Cutouts

Solder Terminals and Screw-less Clamp Connectors

PCB Terminals

Accessory Dimensions Mounted

Dimensions with Switch Guard Installed

RectangularA16ZJ-5050

SquareA16ZA-5050

Dust Covers

RectangularA16ZJ-5060

SquareA16ZA-5060

RoundA16ZT-5060

OMRON A16 catalog

English

Global Edition

OMRON A16 specification

Rectangular
A16[]-J
Solder terminals (tab terminals #110)

Square
A16[]-A
Solder terminals (tab terminals #110)

Round
A16[]-T
Solder terminals (tab terminals #110)

Rectangular
A16[]-J[]-[]P
PCB terminals

Rectangular
A16[]-J[]-T1
Voltage-reduction lighting, solder terminals (tab terminals #110)

Rectangular
A16[]-J[]-2S, T1-2S, T2-2S
Screw-less Clamp

LED
A16-5D[]/-12D[]/-24D[]

Incandescent Lamp
A16-5/-12/-24

Extractor
A3PJ-5080

Screw Fitting
A16Z-3004

Socket Unit Lamp Extractor
A16Z-5080

Rectangular
A16ZJ-5050

Square
A16ZA-5050

Rectangular
A16ZJ-5060

Square
A16ZA-5060

Round
A16ZT-5060