The Schneider VW3AE0651 is a sinus filter designed for Altivar floor-standing enclosures with separate air flows or compact versions, belonging to the Altivar 71 Plus and Altivar 61 Plus drive ranges. It sits in the protection accessories category, smoothing the drive output waveform to reduce motor stress and cable reflections on longer runs.
A sinus filter (also called a sine-wave filter) converts the PWM output of a variable-frequency drive into a near-sinusoidal voltage waveform. This reduces motor heating, eliminates bearing currents from common-mode voltage, and allows longer motor cable runs — typically up to 300 m or more depending on the drive. The VW3AE0651 is sized for the Altivar floor-standing enclosure format, meaning it mounts inside the drive cabinet, not as a standalone box. If you're retrofitting a line with an Altivar 71 Plus or 61 Plus in a floor-standing cabinet, this filter is the factory-specified protection accessory.