Siemens 3RH2911-1GA13 auxiliary switch, on the front, 1 NO + 3 NC, 53/54, 61/62, 71/72, 81/82, current path: 1 NO, 1 NC, 1 NC, 1 NC, screw terminal, physically coded, only with contactor relays 3RH2140 and 3RH2440 combinable (according to EN 50011)