It sits between the drive output and the motor cable to limit the rate of voltage rise (dV/dt) and reduce capacitive charging currents in long cable runs — the main cause of premature motor insulation failure in VFD-fed machines. Rated for 115 A maximum at 250 Hz and 103.5 A operational current at the 3 kHz switching frequency, this reactor handles the harmonic-rich output of a PWM drive. The 0.35 mH inductance and 27.5 % impedance are sized to match a typical 400 V class drive in the 55–75 kW range, depending on the load profile. Total power loss runs 205 W in the copper windings plus 160 W in the iron core. Class H insulation is standard for industrial reactors.
Footprint is 0.3 m wide by 0.26 m tall by 0.21 m deep. The flat-type terminals accept bus-bar or crimp-lug connections. Ambient rating is 40 °C. Derate the current if the cabinet ambient exceeds that — the Class H insulation gives headroom, but the core losses (160 W) dump heat into the enclosure. A fan-assisted panel is recommended when the reactor shares a compartment with the drive heatsink.