Siemens 3SE22430XX40 Safety Interlock Switch

Siemens 3SE22430XX40 Safety Interlock Switch is a SIRIUS 3SE22 series safety position switch with a separate actuator, designed to guard access to hazardous machinery. It features a molded-plastic enclosure with top- and side-entry mounting, is IP67 rated, and provides a 1 normally open (NO) and 2 normally closed (NC) contact configuration (three contacts total) for safe monitoring of guard status. Wiring is via three M20 x 1.5 conduit entries and the unit is supplied without an actuator, allowing you to pair it with the appropriate Siemens actuator head. Rated for 230 VAC operation up to 4 A, this interlock is commonly used on machine doors and guarding panels to feed safety relays or PLC safety logic and ensure a proper safety shutdown when a guard is opened.