Allen-Bradley 871P-B40N40-R3 Proximity Sensor

The Allen-Bradley 871P-B40N40-R3 VersaCube Proximity Sensor is a rectangular inductive sensor with a 40 mm sensing distance, designed for non-contact detection of metallic objects in industrial metal-detection and positioning systems such as conveyors, packaging lines, and automated production equipment. As part of the 871P VersaCube family, it provides a normally open output and 2-wire AC/DC wiring, with a supply range of 20–250 V AC/DC and a micro quick-disconnect (AC) connection for straightforward installation and retrofit on existing equipment. The housing is rectangular/cube-style with a 40 mm head and is IP67 and NEMA rated, supporting 2–100 mA load current while delivering long-range, reliable metal detection in industrial environments. Commonly used for replacement or retrofit in material handling, conveyors, packaging, and heavy-duty automation lines, this sensor offers extended detection coverage and robust performance where durable inductive sensing is required.