M22-D-R
ActiveM22 Red Flush Push Button
Red flush momentary push button for Eaton M22 series. 22.5mm cutout, IP67 front. Complete unit with 1NC contact.
Common Applications
Stop button used across manufacturing, particularly on European-built machinery. The M22 series is a direct cross-reference to Schneider Harmony XB4 — same 22mm cutout, same function, different manufacturer. Common on conveyor stop stations, machine tool auxiliary stops, and process control panels in chemical plants. The silver bezel provides good contrast against dark-colored panels, making the red button easy to spot in low-light factory environments.
Commonly Found On
Specifications
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Actuator Function
Momentary = springs back when released. Maintained/latching = stays pressed until pressed again.
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Momentary
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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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Bezel
The ring around the button face. Chrome/silver for standard use, black for stealth panels.
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Silver
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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, ATEX
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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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Red
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Contact Configuration
Normally Closed — circuit is on until you press. Standard for stop/emergency functions. Wire in series with safety circuits.
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1NC
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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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22.5mm
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Environmental Rating
Combined dust/water/impact protection. IP67 = dust-tight + survives temporary submersion. NEMA 4X = corrosion-resistant outdoor use.
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IP67, IP69K, NEMA 4X, NEMA 13
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Illumination
Whether the button has a built-in light. Illuminated buttons show status (lit = active).
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Non-illuminated
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IP Rating
IP67: Dust-tight and survives temporary water submersion (1m for 30 min). Handles oil splashes, steam cleaning, and rain.
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IP67 (front)
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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/Metal bezel
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Mechanical Life
How many press cycles before mechanical failure. Higher is better — 10M cycles at 100 presses/day = 274 years.
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5,000,000 cycles
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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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Operating Cycles
Rated number of operations. Higher is better.
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5 million
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Max Operating Temp
Highest temperature the button is rated to operate in.
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70°C
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Min Operating Temp
Lowest temperature the button is rated to operate in.
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-25°C
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Series
The manufacturer's product family. Products in the same series share mounting systems and accessories.
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M22
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UPC
Universal Product Code for ordering and inventory tracking.
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786685275949
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Specs with this icon are linked to the manufacturer's original source page
You'll Also Need
This is a modular component. For a complete assembly, you may also need:
Compatible Alternatives
These products are functionally equivalent cross-references from other manufacturers.
Installation Quick Reference
Panel cutout: 22.5mm. 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
$2.35 — $12.92
across 4 distributors
Quick Specs
- Actuator Function
- Momentary
- Actuator Shape
- Round
- Actuator Type
- Flush
- Bezel
- Silver
- Certifications
- UL, CSA, CE, ATEX
What People Are Saying
“30mm is legacy at this point. Every major manufacturer has moved to 22mm as the standard. Eaton M22, Schneider XB4, Siemens SIRIUS — all 22mm. Unless you're maintaining a 1980s Allen-Bradley 800T panel, go 22mm and save panel space.”
Learn More
Data Sources
Specifications and product data sourced from the following references.
M22-D-R Eaton Product Page
https://www.eaton.com/us/en-us/skuPage.M22-D-R.html
Accessed March 28, 2026