The VW3A9624 is a DNV certification kit from Schneider Electric, designed for the ATV61 and ATV71 variable speed drive series. It bundles an additional EMC input filter, fixing accessories, and shock-absorbing mounts — everything needed to satisfy DNV marine-type approval requirements in a single order code.
The kit measures 228 x 455 x 120 mm and mounts externally to the drive enclosure. The included EMC input filter attenuates conducted emissions on the line side, which is typically required to pass DNV marine EMC tests. Shock-absorbing mounts reduce vibration transfer to the filter assembly in engine-room or deck-mounted installations.