Allen-Bradley 855T-G10YL3 Stack Light Green LED

Allen-Bradley 855T-G10YL3 is a Green LED indicator module for the 855T Control Tower Stack Light family, providing a steady green signal from a 110–120 VAC supply. This light module is designed to install as a level in a stack-light assembly on industrial control panels, offering continuous illumination to indicate normal operation or active status. Key specs include color Green, illumination type Steady LED, and operating voltage 110–120 VAC (typical for US power systems). Common applications include signaling machine readiness or running status on manufacturing lines, assembly cells, conveyors, and other automation equipment where a clear, constant visual cue is required. As part of Allen-Bradley’s signaling product line, the 855T-G10YL3 is used in configurations that stack multiple light modules to represent different states across a control tower, enabling quick, at-a-glance monitoring of equipment status.