The ABB ACH580-01-033A-4+B056 is a wall-mount drive in the ACH580 series with a 32 A 3-phase 380-480 VAC 50/60 Hz input. The +B056 suffix is a build code that ships with the base drive as one order code on the BOM line.
Sourcing posture
The +B056 build configuration is quoted to order against an RFQ. Build-code drives ship factory-configured to the ordered option set, so the order code on the PO has to match the nameplate on the existing cabinet; a mismatched +B056 variant is the kind of field surprise that costs a commissioning day. Send the full MPN string with the RFQ and we will line it up against the BOM line as ordered.