Allen-Bradley 855T-B10FN5 Flashing Amber Incandescent

Allen-Bradley 855T-B10FN5 is a 70 mm control tower stack light with a black housing and amber lens, designed for 120 V AC operation and flashing incandescent illumination (FN). As part of the Bulletin 855E/855T signaling family, it provides conspicuous machine-status signaling for industrial equipment and control panels, ideal for indicating warnings, alarms, or operational states on manufacturing lines. The light module features a flashing amber incandescent lamp and a 70 mm diameter housing, making it compatible with common 70 mm signaling towers used across industrial installations. The amber lens color corresponds to code 5 in the 855T signaling scheme, and the B designation indicates a black housing color, while the 10 in the part number denotes 120 V AC full-voltage operation. The unit is listed with a NEMA rating of 4/4X/13, supporting rugged use in a range of environments. Typical applications include signaling on packaging machines, conveyors, presses, and other automated equipment where rapid visual alerts are required to draw operator attention.