Allen-Bradley 855E-BCB Stack Light Mounting Base

Allen-Bradley 855E-BCB Stack Light Mounting Base is a surface-mount base designed to accept 50 mm diameter 855E Control Tower Stack Lights on panels, control cabinets, or machine frames. It provides a robust mounting interface with a 1/2 in NPT threaded connection for conduit or fittings, enabling secure wiring and reliable sealing in harsh industrial environments. This base is the "no-cap" variant (the cap-enabled option is 855E-BCBC), making it suitable for installations where the top of the stack light is left open to display the colored lenses. By pairing this mounting base with compatible 50 mm stack-light heads in the 855E family, you achieve consistent alignment and straightforward head replacement in a modular signaling system. Typical applications include factory automation panels and equipment where concise, visible status indication from a stack light is required to convey machine state at a glance. The base forms part of Allen-Bradley's signaling portfolio, offering a standardized, drop-in mounting interface that supports quick field upgrades and scalable installation across multiple machines.