Schmersal BNS 303-11Z Encoded Magnetic Safety Switch

Schmersal BNS 303-11Z Encoded Magnetic Safety Switch is a coded magnetic safety-sensor that uses magnetic actuation to monitor guard position, delivering a 1 NO/1 NC output for safety interlock circuits. It is designed to operate with Schmersal evaluation units such as SRB(-E) / PROTECT-SELECT / PSC1, or an equivalent safety-oriented control system, and complies with EN 60947-5-3 safety requirements. The device belongs to the BNS 303 family and employs encoded magnetic sensing to ensure reliable, safe interlock detection in machine guarding applications. The 1 NO and 1 NC contacts support dual-state signaling for safe-on and safe-off conditions, enabling integration with safety controllers to generate the required safety logic. This combination of encoded sensing, dual-output contacts, and compatibility with Schmersal safety evaluation units makes the BNS 303-11Z suitable for guarding applications on machinery where guarded access must reliably interrupt hazardous motion. Common applications include guarding access doors on presses, conveyors, and packaging lines, where immediate safety responses are critical. The product is designed for industrial environments and forms part of Schmersal's broader safety ecosystem, enabling straightforward integration with Schmersal’s safety monitoring and protection architectures.