The VW3AP1105 is a braking unit accessory for the Altivar Process ATV900 drive family, rated for 800 kW drive systems in the size 2c enclosure format. It carries IP23 protection. This part cannot be ordered alone; it is only available in combination with a standard enclosure. That constraint means the braking unit ships as part of a pre-configured drive system package, not as a standalone retrofit item. For a field-installed braking resistor or chopper, you would need a different accessory path.
Because it is an active, enclosure-combination part, the sourcing path runs through the ATV900 drive system configurator. The enclosure requirement does not add lead time beyond the standard drive-system build cycle.
Integration Note
The braking unit is sized for the ATV900 drive system at 800 kW, size 2c. It integrates into the standard enclosure that houses the drive, sharing the same IP23-rated cabinet. No separate mounting or external wiring enclosure is needed — the braking unit occupies a designated slot within the drive system's mechanical frame. IP23 limits the installation to indoor, non-washdown locations. The enclosure provides basic drip protection but no dust or hose-down resistance. For environments with airborne particulates or scheduled washdown, a higher IP-rated enclosure variant would be required.