What it is
The ABB ACS580-01-04A8-4 is a general purpose wall-mounted AC drive on the ACS580 family, specified for 3-phase 480 V operation. Sitting in the wall-mount ACS580-01 frame, this code is the small-horsepower end of the 480 V three-phase line — the same mechanical package as the rest of the ACS580-01 series, with the 04A8 current slot defining the motor it pairs with. For the buyer who landed on this exact order code, the headline fact is the 480 V three-phase supply class: that is what governs panel voltage, branch protection sizing, and which induction motor is the correct match for the output stage.
Where the class fits
ACS580-01 wall-mount units are the general-purpose slot in ABB's drive catalog — used for fans, pumps, conveyors and similar industrial loads that don't need the dedicated HVAC firmware or a high-inertia servo profile.