3RH2911-1HA22 SIEMENS 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, screw terminal, for contactors 3RT2 and contactor relays 3RH2
3RH2911-1HA13 SIEMENS Auxiliary switch on the front, 1 NO + 3 NC Current path 1 NC, 1 NC, 1 NC, 1 NO for 3RH and 3RT screw terminal .1/.2, .1/.2, .1/.2, .3/.4
auxiliary switch, on the front, 4 NO, 53/54, 63/64, 73/74, 83/84, current path: 1 NO, 1 NO, 1 NO, 1 NO, screw terminal, physically coded, only with contactor relays 3RH2140 and 3RH2440 combinable (according to EN 50011)