Allen-Bradley 855T-BPM40 Mounting Base

Allen-Bradley 855T-BPM40 Mounting Base is a pole-mount foundation for 70 mm stack-light modules in the Control Tower signaling lineup, designed to attach a 70 mm‑diameter light to a 40 cm pole and position the signal for clear visibility above equipment. The 855T-BPM40 specifies a 70 mm mounting base and is associated with a 40 cm pole-mount configuration, a setup commonly found and sold by distributors for legacy 70 mm stack-light installations. Rockwell Automation lists this base under Mounting Base 70 mm Stack Lights and notes its discontinued status as of October 1, 2019, with guidance toward functional replacements in the broader 855T/856T family where applicable; this confirms it as a legacy solution for older automation footprints. In distributor listings, the BPM40 variant is described as a black-housing, 40 cm pole-mount base, reinforcing its role as a compact vertical signaling element suitable for manufacturing cells, packaging lines, and automation zones that require readily visible status indication from a distance. As part of the Allen-Bradley Control Tower Stack Lights family, this base enables reliable support for 70 mm light modules on standard 40 cm poles, helping operators quickly assess machine state, alarms, and process conditions in busy industrial environments.