M22-PV-K01
ActiveM22 Red Mushroom Emergency Stop (Push-Pull)
Red 38mm mushroom head emergency stop push button, push-pull reset, for Eaton M22 series. 22.5mm cutout, IP67.
Common Applications
Emergency stop with push-pull reset mechanism. The knob must be pulled out to reset — simpler than twist-release for operators wearing heavy gloves (common in cold storage, meat processing). Found on food processing lines, warehouse conveyor systems, and agricultural equipment. The maintained push-pull action provides clear visual indication: button extended = machine can run, button pushed in = machine stopped. Wire the NC contact in series with the safety relay.
Commonly Found On
Specifications
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Actuator
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Knob, push-pull
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Actuator Function
Momentary = springs back when released. Maintained/latching = stays pressed until pressed again.
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Maintained
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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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Mushroom Head
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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, IEC 60947-5-5
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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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Head diameter
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38mm
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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
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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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Reset type
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Push-Pull
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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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786685271743
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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. Mount with the yellow backing plate visible (required by EN/ISO 13850).
Wiring: Wire NC contacts in series with the safety relay input channels. Use dual-channel wiring for SIL 3 / PLe applications. Never wire directly to a motor contactor.
Testing: Press the e-stop and verify the machine stops within the required time. Test the reset mechanism. Repeat monthly per EN/ISO 13850.
Dimensions
Wiring Diagram
Troubleshooting
E-stop won't reset (twist/pull doesn't release)
Check for debris in the mechanism. For twist-release: turn clockwise 45-90 degrees. For push-pull: pull straight out firmly. If the mechanism is stuck, the internal latch may be damaged — replace the entire head assembly.
Machine doesn't stop when e-stop is pressed
Critical safety issue. Immediately lock out the machine. Check wiring — NC contacts must be in series with the safety relay. Verify the safety relay is functioning. A broken wire in an NC circuit should cause a stop, so check for a wiring bypass.
Safety relay faults after e-stop reset
The safety relay detects a cross-fault between the two monitoring channels. Check that both NC contacts on the e-stop are switching simultaneously. One contact may be welded closed — replace the contact block.
Where to Buy
Price range
$6.37 — $36.41
across 4 distributors
Quick Specs
- Actuator
- Knob, push-pull
- Actuator Function
- Maintained
- Actuator Type
- Mushroom Head
- Certifications
- UL, CSA, CE, IEC 60947-5-5
- Color
- Red
What People Are Saying
“M22-PV-K01 meets EN/ISO 13850 requirements. Always wire NC contacts through a safety relay, never direct to contactor. Test monthly.”
Learn More
Data Sources
Specifications and product data sourced from the following references.
M22-PV-K01 Eaton Product Page
https://www.eaton.com/us/en-us/skuPage.M22-PV-K01.html
Accessed March 28, 2026
