What the BOM line is actually buying
The ABB ACS580-01-033A-4 is a lower-voltage AC drive in the ACS580-01 frame, fed from a 21-25 A three-phase 400-480 VAC 50/60 Hz supply, and it carries a heavy-duty rating of 11 kW, a light-duty rating of 15 kW, and a nominal rating of 15 kW with a 44.3 A maximum output current. The input current window 21-25 A is the first thing to fix in the spec — it sits inside the typical 400-480 VAC industrial feed and is what lines the drive up against branch protection and contactor sizing upstream.
Reading the duty numbers correctly
Two duty curves ride on the same frame: heavy-duty at 11 kW is the conservative number to use for constant-torque loads (conveyors, extruders, positive-displacement pumps), and light-duty at 15 kW applies to variable-torque loads (fans, centrifugal pumps) where the motor is not asked to deliver rated torque across the full speed range. The 44.3 A maximum output current is the ceiling the drive will hand the motor during peaks and during the current-limit region of the ramp — pick a motor whose full-load amps sit comfortably below that figure on the chosen duty curve, or the drive will fold back into current limit and the process ramps will stretch.
Same-frame neighbours a buyer will weigh against it
The next step up in the ACS580-01 line, ACS580-01-039A-4, keeps the same 11.8 kg mass and the same 22.9 x 20.3 x 49 cm cabinet footprint, but moves to heavy-duty 15 kW / light-duty 18.5 kW with a 56.9 A maximum output current — a real drop-in mechanical substitute when the process current demand grew after commissioning, not a different panel layout. The step down, ACS580-01-018A-4, is a different mechanical animal at 6.6 kg and a narrower 12.5 cm width on 47.3 cm height, rated heavy-duty 5.5 kW / light-duty 7.5 kW with a 22.7 A maximum output — it is a smaller frame and is not a panel-for-panel swap into a slot cut for the 033A.
Cabinet layout — the numbers that actually drive the build
At 22.9 cm deep, 20.3 cm wide and 49 cm tall, the ACS580-01-033A-4 is a tall, narrow module — the 49 cm vertical clearance is the dimension that decides the gland plate row and the wiring duct above the unit, not the 11.8 kg mass which a single installer can handle on a DIN or backplate lift.