The Schneider CR1F400MB7 is a TeSys F magnetic latching contactor — a 3-pole, normally open device rated for 400 A operational current in AC-3 duty, with a 500 A conventional free-air thermal current (Ith) at 40 °C. It's a control contactor for resistive and motor loads, built for panel applications where the contactor must hold its state without continuous coil power. The latching coil draws 1450 VA at 50/60 Hz to pull in, then the unlatching coil (24 V DC) draws 16 W to release; between those events, the contacts stay closed magnetically with zero coil dissipation.
The 400 A rating in AC-3 (motor switching) means this contactor handles induction motors up to 200 kW at 380–400 V, 220 kW at 415 V, and 250 kW at 440 V. For AC-1 resistive loads, the Ith of 500 A is the limit. That 8 kV impulse rating means it survives transient overvoltages common in industrial distribution without flashover — important for panels fed by long cable runs or near VFDs. Short-time withstand current (Icw) is 3600 A for 1 second at 40 °C, dropping to 1000 A for 10 minutes. Rated breaking capacity reaches 4000 A at 220–440 V, and making capacity is 4500 A — both well above the Icw, confirming the contactor can close into and interrupt fault currents within its rating.
This is a lug-ring terminal contactor accepting two 150 mm² cables per pole, or busbars up to 30 × 5 mm. Tightening torque is 35 N·m — substantial, so budget for a torque wrench on the install. Dimensions are 213 mm wide, 206 mm high, 219 mm deep. It's a panel-mount device, not DIN-rail; plan for bolt-down mounting and adequate clearance for cable bending radius. The TH protective treatment means it's tropicalized for humid environments.