Omron · A22 Series

A22-TY-10M

Active
UL CE IEC 60947-5-1

22mm Yellow Projecting Push Button 1NO

Part number: A22 - 10M
Omron A22 Series Introduced circa 2000

Omron A22 illuminated yellow flush push button.

Common Applications

Budget illuminated yellow for warning/intervention functions. Omron pricing is competitive for OEM volumes.

Specifications

Actuator Function
Momentary
Actuator Type
Projecting (extended)
Certifications
UL, CE, IEC 60947-5-1
Color
Yellow
Contact Configuration
1NO
Cutout Diameter
22mm
Illumination
Non-illuminated
IP Rating
IP65

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

Front 22mm cutout panel hole diameter Side panel contact ~45mm depth

Wiring Diagram

L T 11 12 NO (open) press ↓

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.

Quick Specs

Actuator Function
Momentary
Actuator Type
Projecting (extended)
Certifications
UL, CE, IEC 60947-5-1
Color
Yellow
Contact Configuration
1NO

What People Are Saying

+

“Budget illuminated yellow for warning/intervention functions. Omron pricing is competitive for OEM volumes.”

Reddit r/PLC 29 upvotes View thread →