The VW3AE0668 is a sinus filter from the Altivar 61 Plus and Altivar 71 Plus accessory range, designed for floor-standing enclosures with separate air flows or compact versions. It sits in the protection accessories category, smoothing the drive output waveform to reduce motor stress and cable reflections on longer runs.
The sinus filter is sized for the Altivar floor-standing drive family, not for the panel-mount or book-style variants. If your drive is an Altivar 61 Plus or 71 Plus in a floor-standing cabinet with segregated airflow, this filter matches the mechanical and thermal interface. For other drive frames or mounting styles, the mechanical fit and electrical ratings will not align.