Ratings the buyer actually uses
The ACS800-01-0009-3: The only physical figure on the listing is 4.08 kgs — a compact single-handler unit on a wall-mount bracket, so panel-cutout and lifting are not the constraints; cable routing, cooling clearance and EMC are. Anything beyond that — current frame, kW rating, input voltage class, control board revision — is not on the listing here and has to be read off the drive's own nameplate or the original parameter file before it is specified into a BOM.
Integration notes that earn their place
Because this is a wall-mount AC drive in a frame that was common across pulp-and-paper, water/wastewater and metals lines built in the ACS800 era, the panel-builder side of the work is dominated by cable-length and EMC practice rather than the drive's nameplate numbers: keep motor cable runs inside the manufacturer's reflected-wave / dV/dt limit, land the cable shield at the panel end only, and confirm the brake chopper / braking resistor sizing if the original application used them. Those are the items that decide whether a like-for-like replacement drives the motor cleanly or trips on overcurrent or DC bus overvoltage during the first acceleration ramp — and they are decided by what is wired around the drive, not by the 4.08 kgs figure on the listing.