The VW3AP0273 is an automated mains disconnect accessory for Schneider Electric's Altivar Process ATV600 and ATV900 compact drive systems, sized for 355 and 400 kW drives. It is a dedicated disconnect switch, not a standalone component — the manufacturer's condition of use states it cannot be ordered alone; it must be combined with a standard enclosure.
This accessory is classed as an automated main switch disconnect, part of the miscellaneous accessory category for compact drive systems. It provides a motor-circuit switching function integrated into the drive enclosure — think of it as the disconnect that sits between the line supply and the drive's power stage, controlled by the drive's own logic rather than a separate handle. Because it is tied to the enclosure, the buyer must already have or be ordering the matching standard enclosure for the ATV600 or ATV900 frame at 355–400 kW.