Allen-Bradley 855T-B24DN4 Stack Light 24V DC Red

Allen-Bradley 855T-B24DN4 is a 70 mm control-tower stack light with a red lens and a steady incandescent lamp, designed for 24 V AC/DC operation (±10%). The Series B housing is black, and the unit carries an IP65 / NEMA 4X enclosure rating for protection in demanding industrial environments. At 24 V, it draws 271 mA (about 6.5 W) and delivers 31.4 lumens of red illumination with a lamp life rating of roughly 7,000 hours for incandescent elements. Mounting options include surface-mount bases or a 10 cm aluminum pole base, part of the 70 mm stack-light family that supports multiple colored modules to indicate machine state. This module is intended as a visual status indicator within Allen-Bradley stack-light systems, integrating with the 855T family’s control and power architecture for straightforward installation in automation setups.