The Allen-Bradley 871L-B20E40-T2 is a high-reliability photoelectric limit switch (optical control switch) designed for industrial automation applications. It supports 2-wire AC/DC wide-range voltage supply, ensuring compatibility with both AC and DC power sources to meet diverse control requirements. The switch features a 40MM head size with a compact design, facilitating easy installation in confined spaces. Its 20MM sensing distance enables precise object detection, making it ideal for mechanical limit control, conveyor monitoring, and similar industrial scenarios.
Equipped with a shielded design, the switch effectively suppresses electromagnetic interference (EMI) in harsh environments, ensuring stable operation. It offers a normally closed (N.C.) selectable output for flexible integration into different control system logics. As a product under Rockwell Automation, it has undergone rigorous quality verification, delivering exceptional durability and performance.
This limit switch is widely used in factory automation, packaging machinery, and other industrial sectors. For spare parts or alternative models, the RADWELL-verified SUB 871L-B20E40-T2-SUB is recommended to ensure compatibility and reliability.