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A22

Pushbutton Switch (Cylindrical 22/25-dia.)

A22

Install in 22-dia. or 25-dia. Panel Cutout (When Using a Ring)

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last update: November 4, 2025

Approved Standard Ratings

UL, cUL (File No. E41515)

6 A at 220 VAC, 10 A at 110 VAC
Note: Only Switch Blocks and Lamp Sockets are recognized by UL.
         Refer to Data Sheet for the model numbers.

EN60947-5-1 (Low Voltage Directive)

3 A at 220 VAC

CCC (GB/T14048.5)

3 A at 240 VAC, 1.5 A at 24 VDC

Ratings

Contacts (Standard Load)

Contacts
(Standard Load)		 Rated voltage Rated current (A)
Inductive load Resistive load Inductive load Resistive load
10A 24 VAC 10 10 --- ---
110 VAC 5 10
220 VAC 3 6
380 VAC 2 3
440 VAC 1 2
24 VDC --- --- 1.5 10
110 VDC 0.5 2
220 VDC 0.2 0.6
380 VDC 0.1 0.2

Note: 1. The above ratings were obtained by conducting tests under the following conditions.
              (1) Ambient temperature: 20±2°C
              (2) Ambient humidity: 65±5% RH
              (3) Operating frequency: 20 operations/minute
          2. Minimum applicable load: 10 mA at 5 VDC

Contacts (Microload)

Rated applicable load 100 mA at 30 VDC (Resistive load)
Minimum applicable load 1 mA at 5 VDC

LED Indicators

Rated voltage Rated current Operating voltage
6 VAC/VDC 8 mA 6 VAC/VDC ± 5%
12 VAC/VDC 12 VAC/VDC ± 5%
24 VAC/VDC 24 VAC/VDC ± 5%

Voltage-reduction Lighting

Rated voltage Rated current Operating voltage Applicable lamp (BA9S/Base: 13)
110 VAC 8 mA 100 VAC (95 to 115 V) LED Lamp (A22-24A[])
220 VAC 200 VAC (190 to 230 V)

Characteristics

Type Pushbutton Switches Knob-type Selector
Switches		 Key-type
Selector
Switch		 Indicator
Non-lighted
models:
A22-H A22-S
A22-C A22-D		 Lighted
models:
A22L-H
A22L-C
A22L-D		 Non-lighted
model:
A22S		 Lighted
model:
A22W		 Non-lighted
model:
A22K		 M22
Allowable
operating
frequency		 Mechanical Momentary operation:
60 operations/minute max.		 Manual reset: 30 operations/minute max.
Automatic reset: 30 operations/minute max.		 ---
Electrical 30 operations/minute max. ---
Insulation resistance 100 MΩ min. (at 500 VDC)
Contact
resistance		 Standard load 100 mΩ max. (initial value)
Microload 100 mΩ max. (initial value)
Dielectric
strength		 Between
terminals of
same polarity		 2,500VAC, 50/60Hz for 1min
Between each
terminal and
ground		 2,500VAC, 50/60Hz for 1min
Vibration
resistance		 Malfunction
*1		 Malfunction *2: 10 to 55 Hz, 1.5-mm double amplitude
Shock
resistance		 Destruction 1,000 m/s2
max.		 1,000 m/s2
max.		 1,000 m/s2
max.		 1,000 m/s2
max.		 1,000 m/s2
max.		 1,000
m/s2 max.
Malfunction
*1		 1,000 m/s2
max.		 600 m/s2
max.		 1,000 m/s2
max.		 600 m/s2
max.		 1000 m/s2
max.		 600 m/s2
max.
Durability Mechanical Momentary operation:
5,000,000 operations min.		 500,000
operations
min.		 100,000
operations
min.		 500,000
operations
min.		 ---
Electrical 500,000 operations min. 500,000
operations
min.		 100,000
operations
min.		 500,000
operations
min.		 ---
Ambient operating
temperature *2		 -20 °C
to 70 °C		 -20 °C
to 55 °C		 -20 °C
to 70 °C		 -20 °C
to 55 °C		 -20 °C
to 70 °C		 -20 °C
to 55 °C
Ambient operating
humidity		 35% to 85% RH
Ambient storage
temperature *2		 -40 °C to 70 °C
Degree of protection *3 IP65
(oil-resistant)		 IP65 IP65
(oil-resistant)		 IP65 IP65
(oil-resistant)		 IP65
Electric shock protection
class		 Class II
PTI
(tracking characteristic)		 175
Degree of contamination 3 (IEC60947-5-1)

Operating Characteristics (for SPST-NO/SPST-NC)

Type Pushbutton Switches Knob-type Selector Key-type Selector Switch
Lighted Nonlighted
Pushbutton Switches		 Manual
reset		 Automatic reset Manual
reset		 Automatic reset
A22-H A22-C
A22-D A22-S
A22L-H A22L-C
A22L-D		 A22S
A22W		 A22K
Total travel force
(TTF) max.		 29.4 N 0.34 Nm* 0.25 Nm for two
notches *
0.34 Nm for three
notches *		 0.34 Nm* 0.25 Nm for two
notches *
0.34 Nm for three
notches *
Total travel (TT) 5.5 mm max. Approx. 90 ° for two notches
(Approx. 45 ° for three notches)		 Approx. 90 ° for two notches
(Approx. 45 ° for three notches)
Resetting force
(RF) min.		 --- 0.34 Nm
max. *		 --- 0.34 Nm
max. *		 ---

last update: November 4, 2025

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