U1-suffix contrast
The ACS550-01-096A-4: The ACS550-U1-096A-4 is the regional-suffix sibling in the same 96 A frame, listed at 19.96 kgs. The 01 vs U1 suffix flags the regional build variant rather than a re-rated current class; the difference that matters on the panel is mass and any regional labeling on the nameplate, not the headline 96 A figure. Treat the two order codes as same-frame, not as interchangeable nameplates — confirm the nameplate match against the BOM before specifying.
Sourcing posture
The ACS550-01-096A-4 is specified into the BOM as a 96 A wall-mount AC drive, and the part is sourced to order against an RFQ through the usual ABB channel. For panel builders running a spare for a line-down spare, an RFQ with the order code locks the build variant (01-suffix), so the nameplate on the replacement matches the original panel documentation.