What the BOM line is committing to
The ACS880-01-021A-5+K470 is a wall-mount low-voltage drive from the ACS880-01 series, specified on a 3-phase 380-500 V supply per the catalog row. At 4.54 kgs the unit is a single-person lift for panel mounting, which matters when the cabinet is being built up on the shop floor rather than rigged in with a hoist. Frame and footprint track the rest of the -021A rating step inside the ACS880-01 family, so existing cabinet cut-outs and mounting patterns carry over from adjacent rating codes.