What you're sourcing
The ACS550-U1-046A-2: Listed at 6.80 kgs, the unit is a one-person lift onto a backplate but not a chassis-mount part — the footprint drives panel layout, not handling.
Frame class and what it means on the floor
The 6.80 kg envelope puts this drive in the compact wall-mount frame; large enough that reflected-wave dV/dt on long motor cables becomes a real concern, small enough that it almost always goes inside an enclosure rather than a MCC bucket. For runs past the cable-length limit printed on the drive's parameter sheet, the usual fix is an output reactor or dV/dt filter at the drive end, not just a bigger wire — that's where reflected-wave insulation failures start.
Production status and sourcing posture
For a BOM freeze that names this exact code, the working posture is quote-to-order: spec it into the BOM line, request a current lead-time, and let the RFQ close the gap rather than assume a number from memory.