The VW3AE0171 is a circuit-breaker accessory designed for Schneider Electric Altivar floor-standing enclosures — specifically the Altivar 61 Plus, Altivar 61 Plus-LH, Altivar 71 Plus, and Altivar 71 Plus-LH variants. It mounts inside the enclosure's separate-air-flow or compact version, serving as the branch-circuit protection device for the drive.
This breaker is not a general-purpose panel component; it is destination-specific to Altivar floor-standing enclosures with separate air flows or the compact version. If you are retrofitting or repairing an Altivar 61 Plus or 71 Plus cabinet, the VW3AE0171 is the factory-specified protection accessory. For other drive families or standalone panel builds, it will not mate mechanically or electrically.