Technical Parameters Parameter / Feature Specification / Detail Model / Type A185‑30‑11 3‑Pole AC Contactor Poles / Main Contacts 3 × Normally‑Open (NO) — three‑phase main circuit Auxiliary Contacts 1 × NO + 1 × NC (for control/signalling) Rated Main‑Circuit Voltage (Ue) Up to 690 V AC (IEC‑rated) Conventional Free‑air Thermal Current (I_th) 275 A at 40 °C (free‑air) Rated Operational Current (AC‑1, Ie) 275 A @ 690 V (40 °C); derated to 250 A @ 55 °C; 180 A @ 70 °C Rated Motor‑Switching Current (AC‑3, Ie) 185 A @ 400–415 V AC; 170 A @ 500–690 V AC (typical) Rated Motor / Load Power (AC‑3) Up to ~ 90 kW at 400 V; ~ 132 kW at 690 V (depending on load & supply) Coil / Control Supply Voltage Versions available (e.g. 110–120 V AC coil; other coil‑voltages depending on variant) Rated Insulation Voltage (Ui) 1000 V (IEC standard insulation rating) Impulse Withstand Voltage (Uimp) 8 kV (main contacts) Mechanical Endurance ~ 5 million switching operations Connection / Terminals Screw‑type terminals; main contacts via heavy‑duty bars/busbars Protection / Enclosure Rating (terminals) Coil terminals: IP20; main terminals: IP00 (open bar type) Typical Use Cases 3‑phase motor start/stop; industrial load switching; motor control panels; power distribution; contactor‑based machine control