The Schneider Electric VW3A46143 is a passive filter from the Altivar accessory family, designed to reduce current harmonics on the line side of variable speed drives. It's a 3-phase unit rated 25 A input / 26 A output at 480 V ±10 %, 60 Hz, sized for 15 kW / 20 hp motors across a range of Altivar drive models including the ATV61, ATV71, ATV630, ATV650, ATV930, and ATV950 series. The filter achieves a total harmonic current distortion (THDI) of 10 % on the ATV61W, ATV630, ATV650, ATV930, and ATV950 drives at 15 kW/20 hp, and 16 % on the ATV61H and ATV71H/W variants at the same motor rating. That's the headline number a buyer cares about: it tells you how clean the current waveform is coming back to the line, which directly affects whether you pass IEC 61000-2-4 and G5/4 harmonic compliance without a bigger, more expensive active filter. Power factor correction is built in: the filter delivers a cos phi of 0.99 at 100 % line current, 0.85 at 75 %, and unity (1.0) at 150 % — meaning it keeps the reactive draw low across the load range, not just at full load. Efficiency runs at 98 %, with 224 W of thermal losses that need to be accounted for in the enclosure cooling budget.
One filter per drive, wired between the line supply and the drive input. The electrical connection uses terminals accepting 0.5…10 mm² for the main power (X1-1…X2-3) and 2.5 mm² for the A/B control terminals. The unit carries IP20 as standard, or IP55 when enclosure-mounted — so it's fine inside a ventilated panel but needs a separate enclosure if mounted in a washdown area. Operating temperature range is 5…45 °C without derating; above that, derate 3 % per °C up to 60 °C. Altitude derating kicks in above 1000 m at 5 % per 1000 m. Vibration resistance per IEC 60068-2-6: 2 mm peak-to-peak at 5…13.2 Hz, 0.7 gn at 13.2…150 Hz. Storage temp in original packaging is -25…55 °C, transport up to 65 °C.