The Schneider VW3AE0426 is an ammeter accessory designed for Altivar floor-standing enclosures with separate air flows or the compact version, covering the Altivar 61 Plus, 61 Plus-LH, 71 Plus, and 71 Plus-LH drive ranges. It reads line current on 6-pulse drives — the kind of panel-mounted current indication you'd expect on a large VFD cabinet where the operator needs a quick load check without opening the door.
The ammeter is specific to Altivar floor-standing enclosures — the large-cabinet drives (Altivar 61 Plus, 71 Plus, and their -LH variants) that handle higher power ratings. It is a control accessory, panel-mounted, intended to show the drive's input current on a 6-pulse rectifier section. If you are maintaining an installed Altivar cabinet that has a blank panel cutout or a failed meter, this is the factory-fit part. For a new design, the obsolete status means you would need to source a panel-mount ammeter with the same scale and form factor from a third-party instrument supplier.