Siemens 3RH2911-2HA22 auxiliary switch, on the front, 2 NO + 2 NC, .1/.2, .1/.2, .3/.4, .3/.4, current path: 1 NC, 1 NC, 1 NO, 1 NO, spring-loaded terminal, for contactors 3RT2 and contactor relays 3RH2