What this line choke does
The VW3SKLN160H225 is a 3-phase line choke (line reactor) from the Schneider Altivar accessory range, rated at 160 A continuous with 0.225 mH inductance. It sits between the mains supply and a variable-frequency drive to reduce current harmonics, smooth line transients, and limit peak inrush currents during power-up. The 0.225 mH value is sized for a 160 A drive input — the inductance limits the rate of rise of fault current and keeps harmonic distortion within the drive's design envelope.
Rated at 160 A continuous, this choke matches the input of a 160 A Altivar drive frame. The 0.225 mH inductance value is the one that governs harmonic attenuation — too low and the choke doesn't filter; too high and voltage drop across the reactor starves the drive DC bus. Thermal losses of 104 W mean the choke dissipates heat into the enclosure; panel builders need to account for that in the cabinet thermal budget. The IP00 open-frame construction means it's not touch-safe — it goes inside a locked electrical enclosure, not in a washdown area.
Physical integration
The choke measures 316 mm wide × 370 mm high × 200 mm deep. It's a bolted-down component — no DIN-rail clip. The IP00 rating means it's an open-frame reactor; plan for top/bottom clearance for airflow and cable entry. The 104 W thermal loss needs ventilation or forced air in a sealed cabinet. Three-phase line and load connections are the standard power terminals; no control wiring.