A22-FG-10M
ActiveA22 Green Flush Push Button (1NO)
Green flush momentary push button, Omron A22 series. 22mm cutout, IP65, with 1NO contact. Screw terminals.
Common Applications
Omron A22 series push button popular in Japanese and Asian-built machinery. Found on Omron PLC-controlled packaging machines, pick-and-place robots, and electronics assembly lines. The A22 series is competitively priced against Schneider and Eaton — common choice for machine builders watching costs on high-volume builds. The screw terminal accepts ring or fork lugs, standard in Asian wiring practices. Compatible with Omron CJ/NJ PLC systems.
Specifications
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Actuator Shape
The physical shape of the pressable surface.
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Round
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Actuator Type
The button head style. Flush sits level with the bezel (prevents accidental presses). Extended protrudes for easy access.
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Flush
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Certifications
Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.
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UL, CSA, CE
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Color
Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).
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Green
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Contact Configuration
Normally Open — circuit is off until you press. Standard for start/go/enable functions.
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1NO
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Cutout Diameter
The hole size you drill in your panel to mount this button. 22mm is the most common industrial standard worldwide.
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22mm
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IP Rating
IP65: Dust-tight and protected against low-pressure water jets. Suitable for indoor industrial and light washdown.
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IP65
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Material
The bezel/body material. Metal bezels are more durable in harsh environments. Plastic is lighter and cheaper.
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Plastic
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Mounting Type
How the button attaches to the panel. Panel mount is standard — installs through a cutout from the front.
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Panel
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Max Operating Temp
Highest temperature the button is rated to operate in.
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55°C
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Min Operating Temp
Lowest temperature the button is rated to operate in.
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-10°C
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Terminal Type
How you connect wires. Screw clamp is most common in industrial. Spring cage is faster but requires proper ferrules.
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Screw
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Compatible Alternatives
These products are functionally equivalent cross-references from other manufacturers.
IDEC
HW1B-M110G
HW Green Flush Push Button (1NO)
Siemens
3SU1130-0AB40-1BA0
SIRIUS ACT Green Flush Push Button (1NO)
Eaton
M22-DP-G-K10
M22 Green Flush Push Button with 1NO Contact Block
ABB
MP3-10G
Modular Extended Green Push Button (1NO)
Siemens
3SU1100-0AB40-1BA0
SIRIUS ACT Green Flush Push Button Plastic (1NO)
Schneider Electric
ZB4-BA3
Harmony XB4 Green Flush Push Button Head
Eaton
M22-D-G
M22 Green Flush Push Button
ABB
MP1-10G
Modular Green Flush Push Button (1NO)
Installation Quick Reference
Panel cutout: 22mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).
Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.
Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.
Dimensions
Wiring Diagram
Troubleshooting
Button doesn't respond when pressed
Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.
Works intermittently
Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.
Button feels mushy or doesn't click
The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.
Where to Buy
Price range
$2.19 — $6.1
across 3 distributors
Quick Specs
- Actuator Shape
- Round
- Actuator Type
- Flush
- Certifications
- UL, CSA, CE
- Color
- Green
- Contact Configuration
- 1NO
What People Are Saying
“Third time this year an Omron A22 contact block failed on us after less than a year. The plastic housing cracks if you overtorque the mounting nut even slightly. We're switching to Eaton M22 for all new builds.”
Learn More
Data Sources
Specifications and product data sourced from the following references.
A22 Series Omron Product Page
https://www.ia.omron.com/products/family/3482/lineup.html
Accessed March 28, 2026