Its headline rating is 315 A in AC-3 duty at ≤440 V, which means it switches three-phase induction motors up to 110 kW at 400 V AC — the figure that decides fit for a pump, fan, or compressor BOM line. The same contactor also carries AC-1 (resistive) and AC-4 (plugging/inching) utilisation categories, so it covers both distribution and heavy-duty reversing applications. The control circuit is 440 V AC 60 Hz, with a hold-in consumption of 66 VA at 60 Hz. Closing time runs 20–35 ms, opening 7–15 ms — fast enough for most motor-starting sequences but not a high-speed DC switching contactor.
This contactor mounts to a plate, not a DIN rail — factor that into your panel layout. Dimensions are 197 mm high, 168.5 mm wide, 181 mm deep. Power connections are bolted bar or ring-terminal lugs accepting up to 185 mm² cable; control wiring uses screw-clamp terminals accepting 1–4 mm² flexible or solid. Tightening torque is 35 N·m on the power circuit, 1.2 N·m on the control circuit. IP20 on the front face with shrouds fitted. Heat dissipation runs 18–24 W total, with per-pole dissipation of 32 W in AC-1 and 16 W in AC-3. Ambient operating range is –5 to 55 °C, storage –60 to 80 °C.
The contactor complies with IEC 60947-4-1 and EN 60947-4-1, plus JIS C8201-4-1. Rated breaking capacity is 1800 A per IEC 60947-4-1. Associated fuse ratings are 315 A gG or 250 A aM at ≤440 V. Overvoltage category III, protective treatment TH (tropicalised). Mechanical durability is 10 million cycles.