Allen-Bradley 871C-P8B18 Inductive Proximity Switch

Allen-Bradley 871C-P8B18 is a cylindrical inductive proximity switch in the 871C family—a miniature tubular, DC-powered sensor designed to detect metal targets without physical contact. It operates from a 10–30 VDC supply, enabling straightforward integration with standard industrial controls. The 871C series is described by Rockwell Automation as small-diameter, tubular inductive proximity sensors offering compact mounting and multiple variant options to fit tight installations in automation equipment. This model is intended for non-contact metal sensing in industrial environments, providing presence or position sensing in applications where space is at a premium and it follows the general 871C design approach of reliable metal detection in a compact form factor.