Schmersal BNS 250-11Z Non Contact Safety Switch

Schmersal BNS 250-11Z Non-Contact Safety Switch is a compact, magnetically actuated safety sensor designed for guarding and interlock applications. It operates from a 24 VDC supply and provides one normally open and one normally closed contact (1NO/1NC) in a sealed, glass-fiber-reinforced thermoplastic housing measuring 33 x 25 x 13 mm and rated IP67 for protection against dust and water. The unit ships with a 1 m cable (4 conductors, 0.25 mm², PVC jacket) and requires a separate actuator; it features a front-side active area with a magnetic drive, a switching voltage up to 24 VDC, a maximum current of 0.1 A and a maximum switching power of 1 W, with a stated switching frequency up to 5 Hz. Long mechanical life is indicated by 25,000,000 operations for the NC/NO configuration and a mission time of 20 years, making it suitable for industrial safety circuits with proven reliability in demanding environments. Assured switching distances are ON 4 mm and OFF 14 mm per EN IEC 60947-5-3, with the probe designed for concealed mounting when paired with the compatible BPS 250 actuator and SRB safety switchgear.