What the listing is selling
The ACS580-01-012A-4: The specification line carries two parallel duty profiles rather than a single horsepower number: normal duty delivers 7.5 Hp at 12 A, heavy duty delivers 5 Hp at 7.6 A — the same drive, two different continuous-current envelopes depending on whether the application is variable-torque (fans, pumps) or constant-torque (conveyors, extruders, mixers). Output is 3-phase to a standard induction motor, and the wall-mount frame R1 is documented at 20.93" H × 8.16" W × 9.33" D — that footprint is the panel-layout driver, not the weight, and it lines up with the rest of the ACS580-01 480 V class so an integrator stepping up or down the current ladder stays in the same cutout pattern.
Reading the duty split before you size the motor
For a procurement line, the load profile decides which of the two currents matters. A centrifugal fan or pump that only needs constant-torque equivalent during acceleration lands on the 12 A normal-duty envelope; a conveyor, mixer, or hoist that draws breakaway current every cycle lives at the 7.6 A heavy-duty ceiling, and the motor is sized to that lower number even though the nameplate Hp is 5. This is the rating that gets misread on RFQs: a 5 Hp motor with a full-load current above 7.6 A at 460 V will not fit on heavy duty, and a 7.5 Hp motor with FLC above 12 A will not fit on normal duty. Check the motor's nameplate FLC against the relevant column before committing the BOM line.