The Schneider Electric VW3A28803 is an IP43 enclosure option sized for Altivar drives in Size 1, 2, or 3 frames — the physical shroud that upgrades the drive's standard ingress protection for environments where occasional liquid splash or falling dirt is a concern.
This part carries an Obsolete product status from the manufacturer. The is listed as mature, meaning it was in broad production for a significant period before being phased out.