Eaton · M22 Series

M22-L-R

Active
UL CSA CE

22mm Red LED Indicator Light

Part number: M22 - L - R
Eaton M22 Series Introduced circa 2000

Eaton M22 red LED indicator light.

Common Applications

Red = fault/danger per IEC 60204-1. Pairs with M22-L-G green (running). Standard fault indicator on Eaton motor control centers and VFD panels.

Specifications

Certifications
UL, CSA, CE
Color
Red
Cutout Diameter
22.5mm
Illumination
Illuminated
LED Voltage
24V AC/DC
Series
M22

Installation Quick Reference

Panel cutout: 22.5mm. Insert from the front, secure with mounting nut.

LED module: Check the voltage rating matches your supply (typically 24V DC or 230V AC). Connect to PLC digital output or relay contact for status indication.

Color meaning (IEC 60204-1): Green = normal/running. Red = fault/danger. Yellow = warning/caution. Blue = mandatory action. White = neutral/general.

Dimensions

Front 22.5mm cutout panel hole diameter Side panel contact ~45mm depth

Troubleshooting

Light is dim or flickering

Check supply voltage matches the LED module rating. Low voltage causes dimming. If voltage is correct, the LED module is failing — replace it. LED modules have finite life (typically 50K-100K hours).

Light doesn't turn on

Verify voltage at the terminals with a multimeter. Check the PLC output or relay driving the light. LED modules are polarity-sensitive on DC circuits — try reversing the leads.

Where to Buy

Price range

$13.91 — $14.5

across 2 distributors

Quick Specs

Certifications
UL, CSA, CE
Color
Red
Cutout Diameter
22.5mm
Illumination
Illuminated
LED Voltage
24V AC/DC

What People Are Saying

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“Red = fault/danger per IEC 60204-1. Pairs with M22-L-G green (running). Standard fault indicator on Eaton motor control centers and VFD panels.”

Reddit r/PLC 12 upvotes View thread →