Allen-Bradley 440A-A17125 Conduit Pilot Light

Allen-Bradley 440A-A17125 is an M20 conduit pilot light indicator with a red lens, designed as a bayonet-style insert for Allen-Bradley 440A interlock switches. This interlock-switch accessory mounts into the conduit pilot-light cavity to provide a clear visual signal of the switch status within safety control assemblies. The unit shown is the red-lens insert; the light source is sold separately, with LED bulbs available as an option and incandescent 24V bulbs (T-3 1/4) listed among compatible accessories. As part of the 440A pilot-light family from Rockwell Automation, 440A-A17125 is specified for use with 440A interlocks and supports standard bulb configurations used across the line. In practical terms, it helps technicians quickly confirm a powered interlock from a distance or through enclosure doors, improving status visibility in industrial panels. The part is a genuine Allen-Bradley / Rockwell Automation accessory (catalog number 440A-A17125) and is the red version of the M20 conduit pilot-light indicators used with 440A interlock assemblies.