What this transformer does in the drive cabinet
The VW3AE0303 is an 800 VA AC control transformer from Schneider's Altivar accessory line, sized to supply control-circuit power inside an Altivar floor-standing enclosure with separate air flows or the compact version. The 800 VA rating at 230 V AC means it can power the drive's control board, aux relays, and cooling fans without pulling that load through the main DC bus — keeps the control loop isolated from the power stage.
Designed specifically for Altivar 61 Plus and Altivar 71 Plus floor-standing enclosures. The transformer mounts inside the cabinet, taking its primary feed from the line side before the drive's main contactor. Secondary wiring runs to the 24 VDC power supply or directly to the control terminals — no external enclosure needed for the transformer itself.
Listed as active in production. The VW3AE0303 is a current catalog item, not a phase-out or last-time-buy line.