Auxiliary switch on the front, 2 NO + 2 NC Current path 1 NO, 1 NC, 1 NC, 1 NO for contactor relays Size S00 screw terminal 53/54, 63/64, 73/74, 83/84 Multi-unit packaging = 120 units for 3RH2140/3RH2440 Physically coded; only with contactor relays 3RH214
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