Siemens 3SF1324-1SF21-1BA4 Switch

Siemens 3SF1324-1SF21-1BA4 is a safety position switch with solenoid interlocking from the SIRIUS 3SF13 family, designed for securing machine access doors and ensuring safe restart conditions. It features a plastic enclosure with an M12 plug, a five-directions approach capability (ASIsafe integrated), and a locking force of 1300 N, powered by a 24 V magnet supply (AC or DC) that does not require a separate 24 V supply. The device uses a two-channel arrangement—channel 1 actuator with two normally closed contacts in a 2-out-of-2 evaluation path, and channel 2 magnet with one normally closed contact—plus spring-locked operation and an escape release on the front, and it is designed to pair with the separate actuator 3SE5000-0AV0. For diagnostics and safe restart, it provides monitoring contacts on both actuator and magnet circuits (actuator: 2 NC/1 NO; magnet: 2 NC/1 NO), ensuring reliable interlock signaling within safety circuits.