What lands on the bench
The ACS800-U1-0009-5+P901: Listed mass is 7.71 kgs, which puts it in one-person-lift territory on a cabinet back-plate rather than calling for a hoist or a second pair of hands during a swap-out. Class placement is Motors & Motor Controls, Drives, Motor Drives. No voltage class, current rating, kW, or frame size value is present in the spec rows cited here.
Same-frame successor (ACS880-01-021A-5)
Two ACS880-01 peers bracket the mass envelope: ACS880-01-052A-5 at 9.07 kgs and ACS880-01-07A6-5 at 6.35 kgs. They are reference points only; a swap-out decision still needs the rating sheet.
Sourcing posture
For an engineer chasing a like-for-like spare on a line that already runs an ACS800-U1-0009-5+P901, the BOM line is held by quoting the exact +P901 suffix; for a redesign or capacity change, the ACS880-01-021A-5 sits in the same mass and footprint envelope and is the candidate worth engineering against first.