What you're specifying
The ABB ACS880-01-03A4-5 is the 03A4-5 rating position in the ACS880-01 single-drive family, a wall-mount low-voltage drive fed from a 3-phase 380-500 V supply. At 5.90 kgs it is a hand-liftable frame — panel-mountable, not a cabinet-line module — which keeps the install inside a single integrator's reach rather than a rigging call.
Where this frame fits in the line
Larger frames in the family — ACS880-01-021A-5 at 7.71 kgs and ACS880-01-11A0-5 at 4.54 kgs — sit on either side of this one in the current ladder; the 11A0-5's lower mass reflects a different internal layout, not a smaller rating class, so treat the suffix number, not the weight, as the sizing key.
Practical fit notes
Confirm the motor's full-load current against the 03A4-5 rating before locking the BOM line — oversizing the drive is cheaper than running a small-frame unit at its continuous limit with no thermal headroom for a high-inertia start.
Sourcing posture
Sourcing the ACS880-01-03A4-5 is by RFQ against the configured BOM; the current rating, the 380-500 V input class, and the 5.90 kgs frame are the three fields the line check needs to clear.