Overview
The VW3A46109 is a Schneider passive filter rated 75 A at 400 V 50 Hz, designed to reduce current harmonics on Altivar drives including the Altivar Process ATV600 and ATV900, Altivar 61, and Altivar 71 series, sized for a 37 kW/50 hp motor. It delivers a THDI of 10 % for the ATV61W, ATV650, ATV630, ATV950, and ATV930 drives at 37 kW/50 hp, and 16 % for the ATV61H and ATV71H variants at the same power, with a cos phi of 1 and 374 W thermal losses.
Sizing and comparison
Compared to the VW3A46107, which switches 43 A and is rated for a 22 kW/30 hp motor, the VW3A46109 handles 72 A and a 37 kW/50 hp motor, making it the correct choice when the drive branch serves a larger load; the VW3A46107 would be undersized here.
Lifecycle and sourcing
Schneider lists the VW3A46109 as discontinued; no official successor is named in the current catalogue. Units are now sourced through surplus and broker channels, so an RFQ is required to confirm availability and lead time for line-down or last-time-buy needs.