Allen-Bradley 871C-P5A18 Inductive Proximity Sensor

Allen-Bradley 871C-P5A18 is a compact inductive proximity sensor from the 871C tubular family, delivering a 5 mm sensing distance for detecting metal targets in tight spaces. This 3-wire DC proximity switch is intended to switch loads in control circuits directly from the sensor output, simplifying integration with standard automation controllers. Its miniature tubular form factor supports installation in confined enclosures, mounting brackets, and on small-diameter components where space is at a premium. The 871C series is commonly used in industrial settings for tasks such as end-of-travel detection, position sensing on small mechanical parts, and presence sensing on conveyors and robotic assemblies. Designed to integrate with Rockwell Automation systems, this sensor is compatible with the broader Allen-Bradley ecosystem and common inline wiring practices, providing a precise, repeatable trigger point for metal objects within its 5 mm target zone and helping ensure accurate sequencing and safety interlocks in automated lines.