The VW3AP0421 is a 3-lamp indicator assembly that mounts on the front door of an Altivar Process ATV600 or ATV900 drive enclosure. It signals drive status at 24 VDC — the standard control voltage for these compact drive systems. The accessory is classified as a signalling accessory and is part of the drive system's front-door indication kit. It cannot be ordered alone — it must be combined with a standard enclosure (the drive's own cabinet).
Because the VW3AP0421 is a bundled accessory tied to the ATV600/ATV900 enclosure, sourcing it as a standalone spare requires specifying the drive model it will mount on.
