Key Technical Parameters General & Electrical Ratings Product / Model: ABB AF185‑30‑11 Device Type: 3‑pole AC Contactor Main Contacts: 3 normally open (NO) Auxiliary Contacts: 1 NO + 1 NC Control (Coil) Voltage Range: 100–250 V AC/DC Rated Insulation Voltage: Up to 690 V AC Rated Frequency: 50 Hz / 60 Hz Current & Power Ratings Conventional Free‑Air Thermal Current (Ith): ~275 A at 40 °C Rated Operational Current AC‑1 (Ie): ~275 A at 690 V AC (40 °C) ~250 A at 690 V AC (55 °C) ~180 A at 690 V AC (70 °C) Rated Operational Current AC‑3 (Ie): ~185 A at ~415–440 V AC (55 °C) ~170 A at ~500–690 V AC (55 °C) Rated Operational Power AC‑3 (Pe): ~55 kW at 220–240 V AC ~90 kW at 380–400 V AC ~110 kW at ~500 V AC ~132 kW at ~690 V AC Switching & Protection Rated Breaking Capacity (AC‑3): ~8 × Ie Rated Making Capacity (AC‑3): ~10 × Ie Rated Impulse Withstand Voltage: ~8 kV Short‑Circuit Protective Devices: gG type fuses (e.g., 355 A) Mechanical Durability: ~5 million operations Electrical Switching Frequency: ~300–1200 cycles/hour depending on duty Mechanical & Physical Mounting Type: Panel or DIN rail adapter Terminal Type: Screw terminals Degree of Protection: IP20 at coil terminals, IP00 at main terminals Operating Ambient Temperature: ~–40 °C to +70 °C (highest range when no auxiliary devices fitted) Connecting Capacity: Suitable for bar and cable connections (varied conductor sizes) Typical Applications Starting and stopping three‑phase motors Switching heavy industrial loads Control panels and motor starter assemblies Distribution and bypass circuits