New Product

Knob-type Selector Switches

A22NS/A22NW

Selector Switches with 22-mm

Diameters.
Universal Design That Emphasizes
Color Coding, Workability, and Safety
Easy to Use
• You can connect up to three Switch Units in one stage for
multistage expansion.
• Terminal screw hold-on structure that is compatible with
round crimp terminals.
Safety
• Easy-to-operate lock lever for reliable locking.
• Greater safety with a structure that provides finger protection.
• Different colors of Switch Units help prevent wiring errors.
Product Lineup
• Global applicability with safety standards and different voltage specifications.
• Mount the Switches in 25-mm-dia. panel cutouts merely by reversing the mounting nut.
• Many Switch variations with different colors, shapes, and materials of buttons and bezels.

Refer to Safety Precautions for All Pushbutton Switch-

es/Indicators and Safety Precautions in the A22N
datasheet

Red Green Yellow White Blue Black

A22NS-………-N…
Non-lighted Switches
Opaque

Red Green Yellow White Blue Orange Lamp color

When not lit

A22NW-………-T…
Lighted Switches Red Green Yellow White Blue Orange Lamp color

When lit

Note: Knob colors vary depending with the model. Contact ??? to confirm colors.

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 A22NS/A22NW
List of Models
Plastic Switches
Non-lighted Lighted
Two Notches Three Notches Two Notches Three Notches

Metal Switches
Non-lighted Lighted
Two Notches Three Notches Two Notches Three Notches

Round Metal Switches

Non-lighted Lighted
Two Notches Three Notches Two Notches Three Notches

2
 A22NS/A22NW
Structure
Contact Configuration Operation Angle
Two Notches Two Notches Three Notches
0
Contact Notch position 90°
No. of out- Switch po- 45° 45°
Code configura- Contacts 1 2 1 2
puts sition 1 2
tion
(1) NO ON
1 100 SPST-NO (2) --- --- ---
(3) --- --- ---
(1) --- --- ---
1 002 SPST-NC (2) --- --- ---
(3) NC ON

SPST-NO (1) NO ON
2 102 + (2) --- --- ---
SPST-NC (3) NC ON
(1) NO ON
2 101 DPST-NO (2) --- --- ---
(3) NO ON
(1) NC ON
2 202 DPST-NC (2) --- --- ---
(3) NC ON
(1) NO ON
3 111 3PST-NO (2) NO ON
(3) NO ON
(1) NC ON
3 222 3PST-NC (2) NC ON
(3) NC ON

SPST-NO (1) NO ON
3 122 + (2) NC ON
DPST-NC (3) NC ON

DPST-NO (1) NO ON
3 112 + (2) NO ON
SPST-NC (3) NC ON

Three Notches
Contact Notch position
No. of out- Switch po-
Code configura- Contacts
puts sition 1 0 2
tion
(1) NO ON
2 110 DPST-NO (2) NO ON ON
(3) --- --- --- ---
(1) --- --- --- ---
2 011 DPST-NO (2) NO ON ON
(3) NO ON
(1) NO ON
2 101 DPST-NO (2) --- --- --- ---
(3) NO ON
(1) NC ON ON
2 220 DPST-NC (2) NC ON
(3) --- --- --- ---
(1) --- --- --- ---
2 022 DPST-NC (2) NC ON
(3) NC ON ON
(1) NC ON ON
2 202 DPST-NC (2) --- --- --- ---
(3) NC ON ON

3
 A22NS/A22NW

Contact Notch position

Operation Angle
No. of out- Switch po-
Code configura- Contacts
puts sition 1 0 2 Three Notches
tion
0
SPST-NO (1) NO ON 45°
45°
2 120 + (2) NC ON 1 2
SPST-NC (3) --- --- --- ---

SPST-NO (1) NO ON
2 102 + (2) --- --- --- ---
SPST-NC (3) NC ON ON

SPST-NO (1) NC ON ON
2 210 + (2) NO ON ON
SPST-NC (3) --- --- --- ---

SPST-NO (1) NC ON ON
2 201 + (2) --- --- --- ---
SPST-NC (3) NO ON

SPST-NO (1) --- --- --- ---

2 012 + (2) NO ON ON
SPST-NC (3) NC ON ON

SPST-NO (1) --- --- --- ---

2 021 + (2) NC ON
SPST-NC (3) NO ON
NO (1) ON
3 111 3PST-NO NO (2) ON ON
NO (3) ON
NC (1) ON ON
3 222 3PST-NC NC (2) ON
NC (3) ON ON
SPST-NO NO (1) ON
3 122 + NC (2) ON
DPST-NC NC (3) ON ON
SPST-NO NC (1) ON ON
3 212 + NO (2) ON ON
DPST-NC NC (3) ON ON
SPST-NO NC (1) ON ON
3 221 + NC (2) ON
DPST-NC NO (3) ON ON

DPST-NO NC (1) ON ON
3 211 + NO (2) ON ON
SPST-NC NO (3) ON

DPST-NO NO (1) ON
3 121 + NC (2) ON
SPST-NC NO (3) ON

DPST-NO NO (1) ON
3 112 + NO (2) ON ON
SPST-NC NC (3) ON ON

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 A22NS/A22NW
Model Number Structure
Model Number Legend - Shipped as a set that includes the Operation Unit, Lamp Unit (lighted models only), and Switch Unit.
For information on combinations, refer to Ordering Information on pages 6 to 8.

Model Numbers for Sets

(1) (2) (3) (4) (5) (6) (7) (8) (9)
A22N W - 2B M - NR A - G 101 - R A
(1) Type (5) Degree of Protection
Code Type Code Protection
S Non-lighted IP66, NEMA 4X,
A
NEMA13
W Lighted

(2) Number of Notches and Bezel (6) Contacts

Material
Code Description
No. of G General purpose
Code Bezel material
notches
2B 2 Plastic
2M 2 Metal (7) Contact Configuration
2R 2 Rounded metal Switch Units Unit position Non-lighted Lighted
3B 3 Plastic Code Two Three Two Three
NO NC (1) (2) (3)
3M 3 Metal Notches Notches Notches Notches
3R 3 Rounded metal 100 1 0 NO --- --- Yes Yes
002 0 1 --- --- NC Yes Yes
(3) Reset Method 101 2 0 NO --- NO Yes Yes Yes Yes
102 1 1 NO --- NC Yes Yes Yes Yes
Code Reset method
201 1 1 NC --- NO Yes Yes
Two-notch man-
ual 202 0 2 NC --- NC Yes Yes Yes Yes
M Manual 110 2 0 NO NO --- Yes
Three-notch 111 3 0 NO NO NO Yes Yes
manual
112 2 1 NO NO NC Yes Yes
Two-notch auto- 210 1 1 NC NO --- Yes
matic
Automatic 211 2 1 NC NO NO Yes
L
reset on left 212 1 2 NC NO NC Yes
Three-notch left
automatic 011 2 0 --- NO NO Yes

Automatic 012 1 1 --- NO NC Yes

Three-notch right
R reset on 120 1 1 NO NC --- Yes
automatic
right
121 2 1 NO NC NO Yes
Reset from Three-notch left 122 1 2 NO NC NC Yes Yes
B
left or right or right automatic
220 0 2 NC NC --- Yes
221 1 2 NC NC NO Yes
(4) Operation Unit Type and Color 222 0 3 NC NC NC Yes Yes
Code Type and color 021 1 1 --- NC NO Yes
NR Opaque red 022 0 2 --- NC NC Yes
NG Opaque green
NY Opaque yellow Non-lighted mod-
(8) LED Color (9) LED Voltage
NW Opaque white els only
Code Color Code Color
NA Opaque blue
N Non-lighted N Non-lighted
NB Opaque black
R Red A 6 VAC/DC
TR Transparent red
G Green B 12 VAC/DC
TG Transparent green
Y Yellow C 24 VAC/DC
TY Transparent yellow Lighted models W White D 100/110/120 VAC
TW Transparent white only
A Blue E 200/220/230/240 VAC
TA Transparent blue
O Orange
TO Transparent orange

■ Specifications: Refer to the A22N. ■ Precautions for correct use: Refer to the A22N.
■ Dimensions: See page 13.

5
 A22NS/A22NW
Ordering Information
Model Numbers for Sets - - - -Shipped as a set that includes the Operation Unit, Lamp Unit (lighted models only), and Switch Unit.
(Some items cannot be combined. Contact your OMRON sales representative for details.)
Non-lighted, Two-notch, Knob-type Selector Switches
(4)(4) (7)(7)(7)
Bezel No. of (3)
Appearance Model Operation Unit Contact
type outputs Reset method
color configuration
Plastic bezels
100
1
002

102
2B 2 A22NS-2B(3)-(4)(4)A-G(7)(7)(7)-NN 101
202
111
222
3
122
112
Metal bezels
100
1
002
NR: Opaque red
NG: Opaque green 102
2 M: Manual NY: Opaque yellow 101
2M A22NS-2M(3)-(4)(4)A-G(7)(7)(7)-NN
L: Automatic reset on left NW: Opaque white 202
NA: Opaque blue
NB: Opaque black 111
222
3
122
112
Rounded metal bezels
100
1
002

102
2R 2 A22NS-2R(3)-(4)(4)A-G(7)(7)(7)-NN 101
202
111
222
3
122
112

6
 A22NS/A22NW

Non-lighted, Three-notch, Knob-type Selector Switches

(4)(4) (7)(7)(7)
Bezel No. of (3)
Appearance Model Operation Unit Contact
type outputs Reset method
color configuration
110
Plastic bezels 011
101
220
022
202
2
120
102
210
201
3B A22NS-3B(3)-(4)(4)A-G(7)(7)(7)-NN 012
021
111
222
122
212
3
221
211
121
112
110
Metal bezels 011
101
220
022
202
2
120
NR: Opaque red 102
M: Manual NG: Opaque green 210
L: Automatic reset on left NY: Opaque yellow 201
3M A22NS-3M(3)-(4)(4)A-G(7)(7)(7)-NN 012
R: Automatic reset on right NW: Opaque white
B: Automatic reset in center NA: Opaque blue 021
NB: Opaque black 111
222
122
212
3
221
211
121
112
110
Rounded metal bezels 011
101
220
022
202
2
120
102
210
201
3R A22NS-3R(3)-(4)(4)A-G(7)(7)(7)-NN 012
021
111
222
122
212
3
221
211
121
112

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 A22NS/A22NW
Ordering Information
Model Numbers for Sets - - - -Shipped as a set that includes the Operation Unit, Lamp Unit (lighted models only), and Switch Unit.
(Some items cannot be combined. Contact your OMRON sales representative for details.)
Lighted, Two-notch, Knob-type Selector Switches
(7)(7)(7)
(3)
Bezel No. of (4)(4) Contact (8) (9)
Appearance Model Reset
type outputs Operation Unit color Configu- LED color LED voltage
method
ration
Plastic bezels
100
1
002
A22NW-2B(3)-
2B (4)(4)A-G(7)(7)(7)-
(8)(9) 102
2 101
202

Metal bezels
TR: Transparent red 100 A: 6 VAC/DC
1 R: Red
TG: Transparent green 002 B: 12 VAC/DC
A22NW-2M(3)- M: Manual G: Green
TY: Transparent yellow C: 24 VAC/DC
2M (4)(4)A-G(7)(7)(7)- L: Automatic Y: Yellow
TW: Transparent white D: 100/110/120 VAC
(8)(9) reset on left 102 A: Blue
TA: Transparent blue E: 200/220/230/240
2 101 O: Orange
TO: Transparent orange VAC
202

Rounded metal bezels

100
1
002
A22NW-2R(3)-
2R (4)(4)A-G(7)(7)(7)-
(8)(9) 102
2 101
202

Lighted, Three-notch, Knob-type Selector Switches

(7)(7)(7)
(3)
Bezel No. of (4)(4) Contact (8) (9)
Appearance Model Reset
type outputs Operation Unit color Configu- LED color LED voltage
method
ration
Plastic bezels

101
A22NW-3B(3)-
202
3B 2 (4)(4)A-G(7)(7)(7)-
102
(8)(9)
201

Metal bezels
M: Manual
TR: Transparent red A: 6 VAC/DC
L: Automatic R: Red
TG: Transparent green 101 B: 12 VAC/DC
A22NW-3M(3)- reset on left G: Green
TY: Transparent yellow 202 C: 24 VAC/DC
3M 2 (4)(4)A-G(7)(7)(7)- R: Automatic Y: Yellow
TW: Transparent white 102 D: 100/110/120 VAC
(8)(9) reset on right A: Blue
TA: Transparent blue 201 E: 200/220/230/240
B: Automatic O: Orange
TO: Transparent orange VAC
reset in center

Rounded metal bezels

101
A22NW-3R(3)-
202
3R 2 (4)(4)A-G(7)(7)(7)-
102
(8)(9)
201

Note: Normally, the Operation Unit and LED with the same color are combined.
However, Switches are available with a white Operation Unit and yellow LED. A22N…-………-TWA-G………-Y…

■ Subassemblies: Refer to pages 9 to 12. ■ Specifications: Refer to the A22N. ■ Dimensions: Refer to page 13.
(You can order Operation Units, Lamp Units, and Switch Units
individually.)

8
 A22NS/A22NW
Ordering Information
Subassemblies - - - - - You can order Operation Units, LED Units, Mounting Latches, and Switch Units individually. Use them in
combination for models that are not available as assembled Switches. They can also be used as inventory for
maintenance parts.

Plastic Operation Units Metal Operation Units Rounded Metal Operation Units

Mounting Latch LED Unit

Lighted Switches

Non-lighted
Switches

Switch Units Switch Units + Lighting Units

*Use a Reinforcement Plate for greater strength.

Reinforcement Plate

■ Model numbers of sets: See pages 6 to 8. ■ Specifications: Refer to the A22N. ■ Dimensions: Refer to page 13.

9
 A22NS/A22NW
Ordering Information
Subassemblies - - - - - - You can order Operation Units, Lamp Units, and Socket Units individually. Use them in combination for models
that are not available as assembled Switches. They can also be used as inventory for maintenance parts.

Non-lighted Switches
Plastic Metal Rounded metal

Bezel material and shape

No. of Operation
Reset method Model Model Model
notches Unit color
Manual A22NZ-2BM-NRA A22NZ-2MM-NRA A22NZ-2RM-NRA
2
Automatic reset on left A22NZ-2BL-NRA A22NZ-2ML-NRA A22NZ-2RL-NRA
Manual Opaque A22NZ-3BM-NRA A22NZ-3MM-NRA A22NZ-3RM-NRA
Automatic reset on left red A22NZ-3BL-NRA A22NZ-3ML-NRA A22NZ-3RL-NRA
3
Automatic reset on right A22NZ-3BR-NRA A22NZ-3MR-NRA A22NZ-3RR-NRA
Reset from left or right A22NZ-3BB-NRA A22NZ-3MB-NRA A22NZ-3RB-NRA
Manual A22NZ-2BM-NGA A22NZ-2MM-NGA A22NZ-2RM-NGA
2
Automatic reset on left A22NZ-2BL-NGA A22NZ-2ML-NGA A22NZ-2RL-NGA
Manual Opaque A22NZ-3BM-NGA A22NZ-3MM-NGA A22NZ-3RM-NGA
Automatic reset on left green A22NZ-3BL-NGA A22NZ-3ML-NGA A22NZ-3RL-NGA
3
Automatic reset on right A22NZ-3BR-NGA A22NZ-3MR-NGA A22NZ-3RR-NGA
Reset from left or right A22NZ-3BB-NGA A22NZ-3MB-NGA A22NZ-3RB-NGA
Manual A22NZ-2BM-NYA A22NZ-2MM-NYA A22NZ-2RM-NYA
2
Automatic reset on left A22NZ-2BL-NYA A22NZ-2ML-NYA A22NZ-2RL-NYA
Manual Opaque A22NZ-3BM-NYA A22NZ-3MM-NYA A22NZ-3RM-NYA
Automatic reset on left yellow A22NZ-3BL-NYA A22NZ-3ML-NYA A22NZ-3RL-NYA
3
Automatic reset on right A22NZ-3BR-NYA A22NZ-3MR-NYA A22NZ-3RR-NYA
Reset from left or right A22NZ-3BB-NYA A22NZ-3MB-NYA A22NZ-3RB-NYA
Manual A22NZ-2BM-NWA A22NZ-2MM-NWA A22NZ-2RM-NWA
2
Automatic reset on left A22NZ-2BL-NWA A22NZ-2ML-NWA A22NZ-2RL-NWA
Manual Opaque A22NZ-3BM-NWA A22NZ-3MM-NWA A22NZ-3RM-NWA
Automatic reset on left white A22NZ-3BL-NWA A22NZ-3ML-NWA A22NZ-3RL-NWA
3
Automatic reset on right A22NZ-3BR-NWA A22NZ-3MR-NWA A22NZ-3RR-NWA
Reset from left or right A22NZ-3BB-NWA A22NZ-3MB-NWA A22NZ-3RB-NWA
Manual A22NZ-2BM-NAA A22NZ-2MM-NAA A22NZ-2RM-NAA
2
Automatic reset on left A22NZ-2BL-NAA A22NZ-2ML-NAA A22NZ-2RL-NAA
Manual Opaque A22NZ-3BM-NAA A22NZ-3MM-NAA A22NZ-3RM-NAA
Automatic reset on left blue A22NZ-3BL-NAA A22NZ-3ML-NAA A22NZ-3RL-NAA
3
Automatic reset on right A22NZ-3BR-NAA A22NZ-3MR-NAA A22NZ-3RR-NAA
Reset from left or right A22NZ-3BB-NAA A22NZ-3MB-NAA A22NZ-3RB-NAA
Manual A22NZ-2BM-NBA A22NZ-2MM-NBA A22NZ-2RM-NBA
2
Automatic reset on left A22NZ-2BL-NBA A22NZ-2ML-NBA A22NZ-2RL-NBA
Manual Opaque A22NZ-3BM-NBA A22NZ-3MM-NBA A22NZ-3RM-NBA
Automatic reset on left black A22NZ-3BL-NBA A22NZ-3ML-NBA A22NZ-3RL-NBA
3
Automatic reset on right A22NZ-3BR-NBA A22NZ-3MR-NBA A22NZ-3RR-NBA
Reset from left or right A22NZ-3BB-NBA A22NZ-3MB-NBA A22NZ-3RB-NBA

■ Model numbers of sets: See pages 6 to 8. ■ Specifications: Refer to the A22N. ■ Dimensions: Refer to page 13.

10
 A22NS/A22NW
Ordering Information
Subassemblies - - - - -You can order Operation Units, LED Units, Mounting Latches, and Switch Units individually. Use them in
combination for models that are not available as assembled Switches. They can also be used as inventory for
maintenance parts.

Lighted Switches
Plastic Metal Rounded metal

Bezel material and shape

No. of Operation
Reset method Model Model Model
notches Unit color
Manual A22NZ-2BM-TRA A22NZ-2MM-TRA A22NZ-2RM-TRA
2
Automatic reset on left A22NZ-2BL-TRA A22NZ-2ML-TRA A22NZ-2RL-TRA
Manual Transparent A22NZ-3BM-TRA A22NZ-3MM-TRA A22NZ-3RM-TRA
Automatic reset on left red A22NZ-3BL-TRA A22NZ-3ML-TRA A22NZ-3RL-TRA
3
Automatic reset on right A22NZ-3BR-TRA A22NZ-3MR-TRA A22NZ-3RR-TRA
Reset from left or right A22NZ-3BB-TRA A22NZ-3MB-TRA A22NZ-3RB-TRA
Manual A22NZ-2BM-TGA A22NZ-2MM-TGA A22NZ-2RM-TGA
2
Automatic reset on left A22NZ-2BL-TGA A22NZ-2ML-TGA A22NZ-2RL-TGA
Manual Transparent A22NZ-3BM-TGA A22NZ-3MM-TGA A22NZ-3RM-TGA
Automatic reset on left green A22NZ-3BL-TGA A22NZ-3ML-TGA A22NZ-3RL-TGA
3
Automatic reset on right A22NZ-3BR-TGA A22NZ-3MR-TGA A22NZ-3RR-TGA
Reset from left or right A22NZ-3BB-TGA A22NZ-3MB-TGA A22NZ-3RB-TGA
Manual A22NZ-2BM-TYA A22NZ-2MM-TYA A22NZ-2RM-TYA
2
Automatic reset on left A22NZ-2BL-TYA A22NZ-2ML-TYA A22NZ-2RL-TYA
Manual Transparent A22NZ-3BM-TYA A22NZ-3MM-TYA A22NZ-3RM-TYA
Automatic reset on left yellow A22NZ-3BL-TYA A22NZ-3ML-TYA A22NZ-3RL-TYA
3
Automatic reset on right A22NZ-3BR-TYA A22NZ-3MR-TYA A22NZ-3RR-TYA
Reset from left or right A22NZ-3BB-TYA A22NZ-3MB-TYA A22NZ-3RB-TYA
Manual A22NZ-2BM-TWA A22NZ-2MM-TWA A22NZ-2RM-TWA
2
Automatic reset on left A22NZ-2BL-TWA A22NZ-2ML-TWA A22NZ-2RL-TWA
Manual Transparent A22NZ-3BM-TWA A22NZ-3MM-TWA A22NZ-3RM-TWA
Automatic reset on left white A22NZ-3BL-TWA A22NZ-3ML-TWA A22NZ-3RL-TWA
3
Automatic reset on right A22NZ-3BR-TWA A22NZ-3MR-TWA A22NZ-3RR-TWA
Reset from left or right A22NZ-3BB-TWA A22NZ-3MB-TWA A22NZ-3RB-TWA
Manual A22NZ-2BM-TAA A22NZ-2MM-TAA A22NZ-2RM-TAA
2
Automatic reset on left A22NZ-2BL-TAA A22NZ-2ML-TAA A22NZ-2RL-TAA
Manual Transparent A22NZ-3BM-TAA A22NZ-3MM-TAA A22NZ-3RM-TAA
Automatic reset on left blue A22NZ-3BL-TAA A22NZ-3ML-TAA A22NZ-3RL-TAA
3
Automatic reset on right A22NZ-3BR-TAA A22NZ-3MR-TAA A22NZ-3RR-TAA
Reset from left or right A22NZ-3BB-TAA A22NZ-3MB-TAA A22NZ-3RB-TAA
Manual A22NZ-2BM-TOA A22NZ-2MM-TOA A22NZ-2RM-TOA
2
Automatic reset on left A22NZ-2BL-TOA A22NZ-2ML-TOA A22NZ-2RL-TOA
Manual Transparent A22NZ-3BM-TOA A22NZ-3MM-TOA A22NZ-3RM-TOA
Automatic reset on left orange A22NZ-3BL-TOA A22NZ-3ML-TOA A22NZ-3RL-TOA
3
Automatic reset on right A22NZ-3BR-TOA A22NZ-3MR-TOA A22NZ-3RR-TOA
Reset from left or right A22NZ-3BB-TOA A22NZ-3MB-TOA A22NZ-3RB-TOA

■ Model numbers of sets: See pages 6 to 8. ■ Specifications: Refer to the A22N. ■ Dimensions: Refer to page 13.

11
 A22NS/A22NW
Ordering Information
Subassemblies - - - You can order Operation Units, LED Units, Mounting Latches, and Switch Units individually. Use them in
combination for models that are not available as assembled Switches. They can also be used as inventory for
maintenance parts.

LED Colors
Applied voltage 6 VAC/DC 12 VAC/DC 24 VAC/DC 100/110/120 VAC 200/220/230/240 VAC
Appearance
Color Model Model Model Model Model
Red A22NZ-L-RA A22NZ-L-RB A22NZ-L-RC A22NZ-L-RD A22NZ-L-RE
Green A22NZ-L-GA A22NZ-L-GB A22NZ-L-GC A22NZ-L-GD A22NZ-L-GE
Yellow A22NZ-L-YA A22NZ-L-YB A22NZ-L-YC A22NZ-L-YD A22NZ-L-YE
White A22NZ-L-WA A22NZ-L-WB A22NZ-L-WC A22NZ-L-WD A22NZ-L-WE
Blue A22NZ-L-AA A22NZ-L-AB A22NZ-L-AC A22NZ-L-AD A22NZ-L-AE

Orange A22NZ-L-OA A22NZ-L-OB A22NZ-L-OC A22NZ-L-OD A22NZ-L-OE

Mounting Latch
Appearance Model

A22NZ-H-01

Switch Units
Appearance Contacts Model

SPST-NO A22NZ-S-G1A

SPST-NC A22NZ-S-G1B

Lighting Units
Appearance Applied voltage Model
6 VAC/DC A22NZ-T-A
12 VAC/DC A22NZ-T-B
24 VAC/DC A22NZ-T-C
110 VAC A22NZ-T-D
220, 230, or 240 VAC/DC A22NZ-T-E

Reinforcement Plate
Appearance Model

A22NZ-C-01

■ Model numbers of sets: See pages 6 to 8. ■ Specifications: Refer to the A22N. ■ Dimensions: Refer to page 13.

12
 A22NS/A22NW
Dimensions (Unit: mm)

Lighted and Non-lighted Knob-type Selection Switches

Two-notch Switches with Plastic Bezels Three-notch Switches with Plastic Bezels
A22N@-2B@ A22N@-3B@

28.8 dia. 43.5

28.8 dia. 43.5

5 11 5
11
0.5
0.5 1.8
1.8 24.2 45.3
24.2 45.3

Two-notch Switches with Metal Bezels Three-notch Switches with Metal Bezels
A22N@-2M@ A22N@-3M@

43.5
28.8 dia. 28.8 dia. 43.5

11

24.2 45.3 24.2 45.3

Two-notch Switches with Rounded Metal Bezels Three-notch Switches with Rounded Metal Bezels
A22N@-2R@ A22N@-3R@

43.5 28.8 dia. 43.5

28.8 dia.

11
11
24.2 45.3
24.2 45.3

Terminal Wiring Diagrams

Bottom View
Non-lighted Switches (2NO/1NC) Lighting Units

20
20
10 Lighting Unit
10
Switch Units

Six, M3.5
Six, M3.5 Phillips/slotted
Phillips/slotted screws
screws
Switch Units

Terminal Connection Diagrams

Non-lighted Switches (2NO/1NC) Lighted Switches (1NO/1NC)

Bottom View Bottom View

1 3 3 1 X1 3

2 4 4 2 X2 4

13
 A22NS/A22NW
Safety Precautions
Refer to Safety Precautions for All Pushbutton Switches/Indicators for common precautions.
Read the Safety Precautions in the A22N datasheet.

14
 Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have
any questions or comments.

Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing
by Omron). Omron disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE
PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE PRODUCTS WILL
SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the Products
or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at Omron’s election,
to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or replacement thereof) the
non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount equal to the purchase price
of the non-complying Product; provided that in no event shall Omron be responsible for warranty, repair, indemnity or any other
claims or expenses regarding the Products unless Omron’s analysis confirms that the Products were properly handled, stored,
installed and maintained and not subject to contamination, abuse, misuse or inappropriate modification. Return of any Products by
Buyer must be approved in writing by Omron before shipment. Omron Companies shall not be liable for the suitability or
unsuitability or the results from the use of Products in combination with any electrical or electronic components, circuits, system
assemblies or any other materials or substances or environments. Any advice, recommendations or information given orally or in
writing, are not to be construed as an amendment or addition to the above warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.

Limitation on Liability; Etc.

OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.

Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself is
not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system,
or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product with
respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.

Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence thereof.

Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate it
to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.

Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our practice
to change part numbers when published ratings or features are changed, or when significant construction changes are made.
However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers may be
assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at any time to
confirm actual specifications of purchased Product.

Errors and Omissions.

Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
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