Auxiliary Switch, On The Front, 1 NO + 1 NC, .1/.2, .3/.4, –/–, –/–, Current Path: 1 NC, 1 NO, –, –, Screw Terminal, For Contactors 3RT2 And Contactor Relays 3RH2

Siemens 3RH2911-1HA11 is a SIRIUS front-mount auxiliary switch block with 1 NO and 1 NC instantaneous contacts and screw-type terminals, designed to snap onto compatible 3RT2 contactors and 3RH2 contactor relays. It adds auxiliary switching/signaling contacts for control circuits, supports ratings up to 690 V AC, and offers typical mechanical life of 10,000,000 operating cycles. The block has IP20 front protection and includes mirror-contact functionality per IEC 60947-4-1 and positively driven operation per IEC 60947-5-1.