What the line is
The ABB ACS800-U1-0011-5+B056 is a wall-mount AC drive in the ACS800-U1 series, factory-configured with the +B056 plus code, on the Motors & Motor Controls › Drives › Motor Drives line. ABB ACS800-U1 series drives are typically specified for variable-torque and constant-torque motor control in industrial panels, and the +B056 option code is a factory-engineered variant of that frame rather than a separate product line. Listed mass is 9.07 kgs on this catalog record, so the unit sits in the single-person lift class for panel mounting and is shipped accordingly.
Cross-shop against the ACS880-01 family
The ACS880-01-052A-5 carries the same 9.07 kgs catalog mass as the ACS800-U1-0011-5+B056, which is consistent with the ACS880-01 sharing the same wall-mount footprint class — the most likely direct successor candidate on the panel layout, with the usual ACS800 → ACS880 control-panel rewiring carried over to the new firmware toolset.