What you're sourcing
The ABB ACH580-01-038A-4+B056 is the ACH580-01 frame-1 wall-mount drive with the +B056 option code appended, cataloged under Motors & Motor Controls as a Motor Drive. The order code as written is the full string — base drive plus the +B056 variant suffix — and that suffix is what the panel print and the BOM line should match against, not the bare frame code. Listed weight is 5.90 kgs, which puts it on the lighter end of the ACH580-01 wall-mount range and keeps it as a single-person panel-mount rather than a two-man lift.
Same-series siblings worth weighing
Two ACH580-01 wall-mount siblings sit close to this code — ACH580-01-014A-4 and ACH580-01-023A-4 — both listed at 6.80 kgs against this drive's 5.90 kgs, which is a footprint-class delta that decides whether the existing gland plate cutout and DIN layout still work without rework.
What the field needs to confirm
Panel-side, the 5.90 kgs figure and the frame-1 footprint mean standard ABB ACH580-01 mounting hardware and the matching keypad bezel — no special bracket, no reinforced back panel. On the wiring side, the +B056 suffix is the part that has to reconcile against the panel print; if the print was issued against a different suffix, the I/O and option-card map won't line up even though the base drive is identical.
Sourcing close
For an active BOM line, the play is to specify this exact string — base code plus +B056 — into the RFQ so the quote carries the right option configuration rather than a base unit that then needs a field retrofit. For a drop-in question against an existing ACH580-01-014A-4 panel, the weight delta between siblings is small enough that the gating issue is the suffix and the rated current step, not the grams — confirm both before swapping the order code.