It sits between the supply and the drive, smoothing current harmonics and limiting inrush — a standard fit for any VFD cabinet that needs to meet IEEE 519 or just keep the drive from nuisance-tripping upstream breakers.
IP00 means it's an open-frame component — no enclosure, no finger-safe cover. It mounts inside a cabinet, not on the wall. The flat-type terminals are heavy-duty bus-bar style, sized for the 1120 A path; you'll bolt copper bars or cable lugs directly, not land wire in a spring cage. Dimensions are 0.41 m wide by 0.385 m tall by 0.229 m deep — that's a substantial block, roughly 16 by 15 by 9 inches. Plan for adequate clearance around it: the iron core and coil together dissipate 545 W at full load (385 W coil loss plus 160 W iron loss), so forced ventilation or a derated ambient is expected. The 40 °C ambient rating is the reference; push above that and the current must be derated per the thermal class H insulation curve.