The Schneider TeSys F CR1F400Q7 is a 3-pole bistable magnetic contactor rated for 400 A in AC-3 duty at 440 V, meaning it handles motor switching for loads like pumps, compressors, and conveyors up to that current. Bistable means the coil only draws power during the latching and unlatching transitions — it holds magnetically with zero coil dissipation once latched, a real advantage for energy-sensitive panels or UPS-backed control circuits. The control coil is wound for 380-400 V AC 50/60 Hz, with latching consumption of 1450 VA and unlatching draw of just 12 VA. Latching and unlatching voltage limits are 0.85 to 1.1 Uc, so the coil must see at least 323 V to pull in reliably.
This contactor carries three utilization categories: AC-1 (resistive), AC-3 (squirrel-cage motor starting), and AC-4 (plugging/inching). The headline AC-3 rating is 400 A at 440 V, but in AC-1 resistive duty the conventional free-air thermal current Ith is 500 A at 40 °C, and the rated operational current Ie reaches 500 A at 40 °C for AC-1. For AC-4 reversing or jogging duty, expect higher electrical wear — the mechanical durability of 1,000,000 cycles is the mechanical life, not the electrical contact life under full load. Breaking capacity varies with voltage: 4000 A at 220-440 V, 3500 A at 500 V, 3000 A at 600-690 V, and 1200 A at 1000 V. Making capacity is 4500 A rms. For short-circuit coordination, the associated fuses are 400 A aM, 500 A BS88, or 500 A gG — pick the type that matches your upstream protection scheme. Power dissipation per pole runs 66 W in AC-3 or AC-4, and 70 W in AC-1. At full load that's nearly 200 W total heat inside the enclosure — factor that into your panel cooling, especially if the contactor sits in a sealed cabinet.
The CR1F400Q7 is a bolted-connection contactor — no spring terminals, no plug-in base. That means you torque the power and control wires down with a wrench. Dimensions are 375 mm high, 261 mm wide, and 219 mm deep. Operating position tolerance is ±5° from vertical, so mount it plumb. Altitude rating is 3000 m without derating, and ambient temperature range is -15 to 70 °C. It ships as a set of 10 units. The control circuit insulation voltage is rated 1000 V per IEC 60947-4 and BS 775, with a 1500 V rating per VDE 0110 Group C. Protective treatment is TH (tropicalized) for humid environments.
The contactor is certified to EN/IEC 60947-1, EN/IEC 60947-4-1, JIS C8201-4-1, UL 60947-4-1, and CSA C22.2 No 60947-4-1. That covers the major global markets — IEC for Europe/Asia, UL/CSA for North America. The UL/CSA listing means it's accepted for panel builds in the US and Canada without additional evaluation.