Auxiliary switch on the front, 1 NO + 3 NC Current path 1 NO, 1 NC, 1 NC, 1 NC for contactor relays Size S00 screw terminal 53/54, 61/62, 71/72, 81/82 Multi-unit packaging = 240 units for 3RH2140/3RH2440 Physically coded; only with contactor relays 3RH214
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