What this SKU is
The ABB ACS580-01-04A6-2 is a member of the ACS580 series general-purpose drive line, listed under the Motor Drives category and carrying the ACS580-01 frame designation in the order code. For a buyer landing on this exact order code, the first read is that it is the compact single-drive SKU within the ACS580 family, not a module or option card.