What it is on the BOM
The ABB ACS580-01-031A-2 is an ACS580 series drive in the Motor Drives line under Motors & Motor Controls. The -01 form factor and 031 A frame identify it as one of the lower-current members ABB ships for fans, pumps, conveyors and similar loads. Listed at 2.99 kgs, it falls into the one-person lift band — a panel builder can hang it on the backplate without rigging, which keeps the cabinet layout simple and matters for the MRO shelf when a line is down and a tech is grabbing a spare.