The VW3A99BR01 is a removable support rail kit for the Altivar Process Modular drive family, specifically for handling during the cabinet integration step of an LH or regen power module. It's classified as an installation accessory — a support, not a functional electronic module — and is intended for single-drive architectures within the Altivar Process Modular range.
What the kit includes and why it matters
The kit composition is listed as rails support — these are the mechanical guide rails that let you slide a power module in and out of the cabinet during assembly or service. For a commissioning engineer or panel builder, that removable feature means you can stage the heavy LH or regen module outside the enclosure, land the bus bars and cabling, then slide it home — beats trying to torque lugs in a tight cabinet.