The VW3A9631 is a DNV certification kit from Schneider Electric, designed for ATV61 and ATV71 variable speed drives in frame size 10. It includes shock-absorbing mounts, fixing accessories, and the mechanical profiles and brackets required for mounting the drive to satisfy DNV classification society requirements for marine and offshore installations.
What the kit does and where it goes
The kit provides the mechanical interface between the drive chassis and the panel or mounting plate, plus the vibration-damping elements needed to pass DNV type-approval for shock and vibration on ships or offshore platforms. The shock-absorbing mounts isolate the drive from hull-borne vibration; the profiles and brackets position the drive at the correct standoff and alignment. If you are retrofitting a size 10 ATV61 or ATV71 in a marine panel, this is the factory-specified mounting package — not a generic rail or bracket.