Allen-Bradley 871P-B40C40-R3 Proximity Sensor

The Allen-Bradley 871P-B40C40-R3 VersaCube inductive proximity sensor is a 40 mm rectangular sensing device designed for non-contact detection of metallic objects in industrial automation. As a member of the VersaCube family, it features a 40 × 40 mm unshielded housing and a sensing distance of 40 mm, making it suitable for conveyor systems, material handling equipment, and automated production lines that require reliable, robust performance in industrial environments. It operates from 20–250 V AC/DC, provides a normally closed (2-wire) output, and uses a micro quick-disconnect (AC/DC, 3-pin) connection for easy integration. The sensor is rated IP67 for protection against dust and water ingress and carries UL, CE, CUL, KC, and C-TICK certifications, reflecting its industrial-grade build. Common replacements include Allen-Bradley 871P-B40N40-R3 and 871P-DW15NP40-D4 proximity sensors, offering compatibility within the same VersaCube series.