The VW3AE0816 is a plinth for sinus filter, part of the Schneider Electric Altivar 61 Plus and Altivar 71 Plus range. It is designed for use with Altivar floor-standing enclosures that have separate air flows or the compact version. This is an enclosure accessory, not a functional drive component — it provides the physical mounting base and airflow clearance for the sinus filter module beneath the drive.
In a floor-standing Altivar 61 Plus or 71 Plus cabinet, the sinus filter sits on this plinth, which elevates it to maintain the separate-air-flow design — critical for thermal management in drives running sinusoidal output filters for long motor cable runs or reduced motor insulation stress. The plinth itself carries no electrical rating; its job is purely mechanical and thermal separation. If you are retrofitting or repairing an existing installation, the enclosure cutout and mounting pattern are specific to this plinth — no generic substitute fits without enclosure modification.