auxiliary contact composition 1 NO [Uimp] rated impulse withstand voltage 8 kV overvoltage category III [Ith] conventional free air thermal current 20 A (at 50 °C) for power circuit 10 A (at 50 °C) for signalling circuit Irms rated making capacity 110 A AC for power circuit conforming to NF C 63-110 110 A AC for power circuit conforming to IEC 60947 110 A AC for signalling circuit conforming to IEC 60947 rated breaking capacity 110 A at 415 V conforming to IEC 60947 110 A at 440 V conforming to IEC 60947 80 A at 500 V conforming to IEC 60947 110 A at 220...230 V conforming to IEC 60947 110 A at 380...400 V conforming to IEC 60947 70 A at 660...690 V conforming to IEC 60947