Allen-Bradley 871F-B50N80-R3 Proximity Switch

The Allen-Bradley 871F-B50N80-R3 proximity switch is a non-contact inductive sensor designed to detect metallic targets within a 50 mm nominal sensing distance. It features an 80 mm head and a normally open output, powered by a 2-wire AC/DC configuration for straightforward integration into standard control circuits. As part of the 871F family, this sensor is built for rugged industrial environments and is commonly used for presence sensing on conveyors, stamping and forming equipment, and other automated-materials handling applications where metal detection must occur without physical contact. The B50N80-R3 variant communicates its sensing performance and wiring style within the broader 871F line, offering a reliable rock-solid solution for OEMs and maintenance teams seeking durable, easy-to-integrate proximity sensing in Rockwell Automation ecosystems.