The VW3AE0672 is a sinus filter from the Altivar 71 Plus and Altivar 61 Plus range, designed specifically for Altivar floor-standing enclosures with separate air flows or the compact version. It cleans the drive output waveform to reduce motor stress and bearing currents — the kind of thing that matters when a drive is feeding a long cable run to a motor up-tower or across a plant floor.
This sinus filter is a protection accessory destined for Altivar floor-standing enclosures — the large-frame cabinets with separate air-flow paths or the compact version. It is not a DIN-rail snap-on; it bolts into the enclosure's output path, sized for the drive's continuous current and switching frequency. If you are retrofitting an existing Altivar 71 or 61 Plus cabinet, this is the factory-matched filter.