Allen-Bradley 855E-BCBC Stack Light Base Assembly

Allen-Bradley 855E-BCBC Stack Light Base Assembly is a 50 mm mounting base for the 855E control-tower family, designed to provide a surface-mounted platform that accepts 50 mm stack-light modules and enables clean, modular signaling on automation panels. This "with cap" variant (BCBC) includes a cap and a 1/2 in NPT threaded entry for conduit or cable routing, supporting standard industrial wiring practices and convenient enclosure installation. The base is engineered to pair with standard 50 mm indicator modules to create compact multi-color signaling towers used to convey machine state, fault conditions, or process status at a glance. Typical applications include manufacturing cells, packaging lines, warehouse automation, and panel-mounted signaling where quick visual cues improve operator response and line efficiency. When combined with compatible 855E light modules, the BCBC base provides a ready-to-install, modular solution that can be expanded or reconfigured as production needs evolve, avoiding the need to replace entire tower assemblies and simplifying maintenance and part stocking.