The VW3A28811 is a NEMA Type 1 enclosure option, size 1, for Schneider Altivar variable-frequency drives — a sheet-metal top/bottom kit that converts an open-chassis drive into a drip-proof, finger-safe package for indoor panel or standalone mounting.
Lifecycle reality — obsolete, sourced on request
Schneider lists this part as obsolete. No official successor order code appears in the record.
What the NEMA Type 1 rating means for fit
NEMA Type 1 means indoor use only — it provides a degree of protection against incidental contact with live parts and falling dirt, but it is not weatherproof or washdown-rated. Size 1 corresponds to the drive frame it fits; verify the target drive's frame size against the Schneider Altivar compatibility table before ordering.
