What the order code points at
The order code ACS550-U1-246A-4+K466 identifies a unit in the ACS550 U1 drive family, with the +K466 suffix designating the factory option set listed on the line's data plate. At 68.04 kgs the unit lands in the mid-to-upper mass band of the U1 family — heavy enough that the cabinet layout, lifting provision and floor-anchoring plan are written around it before the wiring is.
Handling and cabinet headroom
At 68.04 kgs the unit dictates overhead-lifting provision at install, the cabinet's static load rating, and the airflow clearance around the heat sink. Lighter ACS550 U1 builds come in around 34.02 kgs and 36.29 kgs, while the heavier -157A build lands at 89.81 kgs — the +246A-4+K466 sits cleanly between them.
Compliance documentation
Compliance certificates (RoHS, REACH, UL, IEC) are tied to ABB's ACS550 documentation set and travel with the unit's serial number; request them through the RFQ against the serial on the nameplate rather than against a generic part code, because the +K466 option bundle can carry option-specific approvals that differ from the base build.