The Allen-Bradley 855TC-B10D4D3 Stack Light Assembly is a configured stack-light signaling device from Rockwell Automation’s 855T/855TC family, designed to provide clear, multi-stage visual signaling on industrial equipment. It operates at 120 V AC and delivers a light output rating of 37.7 lumens (3.0 MSCP) when energized, enabling quick visibility of machine status from across a shop floor. The assembly features a black housing and is designed to be configured with multiple light modules to convey specific machine states.
