The VW3A9621 is a DNV certification kit from Schneider Electric, designed for the ATV61 and ATV71 variable speed drive series. It bundles the mounting and fixing hardware, shock-absorbing mounts, and an additional EMC input filter needed to satisfy the requirements of the DNV certification body for marine and offshore applications.
What's in the box
The kit comprises fixing accessories, shock-absorbing mounts, and an additional EMC input filter with its support hardware. The EMC filter is the key component for passing DNV emission limits in a marine panel; the shock mounts handle the vibration profile typical of engine-room or deck-mounted drives.
Fit and dimensions
The kit measures 148 x 336 x 84 mm and is designated for the ATV61 and ATV71 variable speed drive range. It mounts alongside the drive in the same enclosure; plan for the additional depth and the filter's grounding strap routing during panel layout.