Key Technical Parameters General & Electrical Ratings Product / Model: ABB AF305‑30‑11‑13 Type: Three‑pole magnetic contactor (non‑reversing) Poles (Main): 3 normally open (3 NO) Auxiliary Contacts: 1 normally open + 1 normally closed (1 NO + 1 NC) Control (Coil) Voltage: 100 – 250 V AC/DC (wide range for both AC and DC control circuits) Rated Insulation Voltage (Ui): Up to 1000 V (IEC) / 600 V (UL) Rated Frequency: 50 Hz / 60 Hz Current & Power Performance Conventional Free‑Air Thermal Current (Ith): Up to 500 A Rated Operational Current AC‑1 (Ie): Typical ~375 A at 690 V (varies with temperature) Rated Operational Current AC‑3 (Ie): ~305 A at 415 V Rated Operational Power (AC‑3): ~160 kW at 380–440 V Higher power capability depending on system voltage rating General Use Rating (UL/CSA): ~400 A at 600 V AC Horsepower Ratings: ~125 hp at 220–240 V AC ~250 hp at 440–480 V AC ~300 hp at 550–600 V AC Switching & Protection Rated Making Capacity (AC‑3): ~10 × Ie Rated Breaking Capacity (AC‑3): ~8 × Ie Impulse Withstand Voltage: ~8 kV Built‑In Surge Suppression: Yes Mechanical & Durability Mechanical Durability: ~5 million operations Maximum Electrical Switching Frequency: ~300 cycles/hour Terminal Type: Main circuit bars and screw terminals Degree of Protection: IP20 for coil/auxiliary terminals, IP00 for main terminals Operating Ambient Temperature: Approx. –25 °C to +50 °C with thermal relay; –40 °C to +70 °C without thermal relay Physical Frame Size: AF305 series Dimensions (approx): ~225 mm (H) × ~140 mm (W) × ~180 mm (D) Weight: ~4.6 kg Applications Motor starters for three‑phase induction motors Power circuit switching in distribution and automation panels Isolation and bypass switching Industrial control systems requiring robust contactors with wide coil voltage flexibility