What the line sees
The ABB ACS580-01-039A-4 is a lower-voltage AC drive in the ACS580-01 family, sized at 18.5 kW under light-duty use and 15 kW under heavy-duty use, with a maximum output current of 56.9 A. It runs in the standard ABB cabinet-mount frame of 22.9 cm x 20.3 cm x 49 cm, which means a panel cut-out and gland plate already provisioned for an ACS580-01 will accept it without sheet-metal rework.
Duty class is the sizing call
The split between light- and heavy-duty ratings is the figure that actually drives motor selection here: 18.5 kW in light-duty use is the figure to quote when the load is a fan, pump, or conveyor running close to its service factor, while 15 kW in heavy-duty use is the figure that governs constant-torque applications such as mixers, extruders, or any load that asks for full torque near standstill. The nominal rating listed alongside them is 18.5, matching the light-duty ceiling, so the drive is fundamentally a light-duty-rated unit with a heavy-duty derate available for tougher mechanical loads. At full output the drive can deliver 56.9 A, which is the number to use when validating branch-circuit protection, SCCR coordination upstream, and cable sizing — not the kW figure, since current is what actually stresses the cabling and the disconnect.
Where it sits in the cabinet
The frame draws 11.8 kg and ships at 13 kg in packaging; the delta is the pallet and carton, not the drive itself. The 22.9 cm x 20.3 cm x 49 cm footprint is the same cabinet cut as the rest of the ACS580-01 family, so mounting pattern, gland plate, and DIN provisions carry across the range.
Same frame, smaller rating — the ACS580-01-033A-4 cross-shop
The closest functional sibling inside the same family is the ACS580-01-033A-4: identical 11.8 kg mass, identical 22.9 cm x 20.3 cm x 49 cm dimensions, and the same light-/heavy-duty split pattern — just stepped down to 15 kW light-duty / 11 kW heavy-duty with a 44.3 A max output. For a panel originally specified around the 033A, the 039A is a drop-in for the same sheet-metal cut and gland layout, but it carries more current headroom on the output side; the wiring and breaker upstream may need to be re-validated against the higher 56.9 A figure, not assumed to carry over from the smaller drive's BOM.