It sits between a variable-frequency drive and the motor to smooth the voltage spikes from PWM switching, protecting the motor windings and extending cable runs. The 0.1 mH inductance is sized for a 400 V AC line, and the reactor is built to thermal class H per IEC 60085, meaning it handles sustained heat without degrading the winding insulation.
The 212 A maximum current is the thermal limit under continuous duty — don't plan to run it at that edge without accounting for ambient temperature. The reactor is rated at a 40 °C ambient, and if your panel runs hotter, you'll need to derate. The 4 kHz switching frequency matches most IGBT-based drives in the 50–200 kW range; if your drive switches at 8 kHz or higher, this reactor's core losses will climb faster than the 235 W iron loss figure suggests. The 295 W total coil loss at full load means the reactor dumps about 300 W into the enclosure — plan ventilation accordingly.
IP00 means no enclosure — this is a bare reactor meant for a cabinet, not a washdown floor. The flat-type terminals accept busbar or crimp lugs, not spring-cage or screw-clamp wire ends. At 0.35 m wide by 0.32 m tall by 0.22 m deep, it takes up a decent footprint on the backplate. Mount it close to the drive output to minimize radiated noise on the cable between drive and reactor.