Commutating choke for 3-phase converter duty
It's the brute-force inductor that sits between the supply and the rectifier, smoothing the current pulses and limiting the rate of rise during commutation — out here in the grease, that's what keeps the drive from tripping on harmonics or blowing its input diodes.
Power dissipation and thermal class
Total power loss splits into 670 W in the copper coil and 270 W in the iron core, for 940 W combined at full load. The winding insulation is Class H per IEC 60085, rated for a 40 °C ambient — meaning the choke can run hot without cooking its own varnish. That's important in a crowded panel where the reactor is radiating into the same air as the drive's heat sink.
IP00 open-frame construction — no enclosure, so it needs to live inside a cabinet with proper clearance to adjacent metalwork. Dimensions are 0.46 m wide by 0.265 m deep by 0.435 m tall. The main circuit connects via flat-type terminals, which means busbar or heavy lug connections, not screw-clamp wire terminals. Plan for a dedicated mounting footprint and enough air gap for the heat to rise out.