Allen-Bradley 855T-B10BR6 Control Tower Stack Light

The Allen-Bradley 855T-B10BR6 Control Tower Stack Light is a 70 mm blue-strobe signaling module for Allen-Bradley 70 mm control towers, featuring a blue lens in a black polycarbonate housing with a 70 mm outer diameter. It operates from 120 V AC (±10%) at 60 Hz and uses a xenon strobe lighting module (Strobe xenon) for flashing indication, with an IP65 and NEMA 4X rating suitable for harsh industrial environments. Wiring is specified for 0.5 mm² conductors with a recommended terminal torque of 0.8 Nm, and the unit supports a 5-module stack with a shock rating of 35 G and a vibration rating of 0.75 G. The operating temperature range is −25 °C, with storage down to −40 °C, and construction employs polycarbonate for the housing and related mounting components. This 70 mm stack-light model is discontinued as of October 1, 2019, and Rockwell lists a replacement product: 856T-BB6.