The Schneider Electric TeSys F CR1F265Q7 is a 3-pole magnetic contactor rated for 265 A in AC-3 duty at 440 V — that's the motor-switching current, so it handles a substantial induction motor load on a 400 V class line. The coil is a standard 380 V AC/DC latching type, pulling 1650 VA during latching and dropping to 12 VA holding. Bolted connection terminals, so expect to torque lugs, not push ferrules.
AC-3 covers squirrel-cage motors — starting and switching off during running — so that 265 A is the real-world load current, not a resistive bench figure. The conventional free-air thermal current (Ith) is 350 A at 40 °C, which is the thermal limit for the power circuit in a non-enclosed panel. The utilisation category also includes AC-1 (resistive) and AC-4 (plugging/inching), so it covers welding transformer or reversing duty, but the AC-4 rating will be lower — the datasheet shows 245 A for AC-4. The control circuit is 380 V AC 50/60 Hz or 380 V DC, with a latching voltage tolerance of 0.85 to 1.1 Uc. That means on a 380 V nominal line, the coil will reliably latch between 323 V and 418 V. The unlatching range is the same, so it won't drop out on a sag unless you dip below 323 V. Operating time is 45 to 50 ms latching, 50 to 100 ms unlatching — fast enough for most motor sequencing, but not for precision synchronisation.
This is a bolted-connection contactor in the TeSys F frame — 370 mm high, 201.5 mm wide, 213 mm deep. It's a panel-mount part, not DIN-rail snap-on. The 3-pole power circuit is rated for 1000 V AC/DC insulation voltage, so it's fine for 690 V line applications with headroom. Operating altitude is 3000 m without derating, and ambient temperature range is -15 to 70 °C. The TH protective treatment means it's tropicalised for humidity and mild corrosive environments.