What the BOM line is calling for
The ACS550-01-087A-4: The drive ships at 26.00 kg — a genuine two-person lift that decides the panel-mount bracket and the lifting plan on a swap-out.
Same family, different trim
The ACS550-U1-096A-4 sits one current step up in the ACS550-U1 build at 19.96 kg and shares the same Drives category — relevant when a cross-shop on a higher-rated alternate is needed, not as a direct drop-in.
Optioned siblings worth knowing
ACS550-U1-072A-4+B055+L512 and ACS550-U1-059A-4+B055 are catalogued ACS550-U1 builds carrying the +B055 option suffix, at 34.02 kg and 36.29 kg respectively — they show how the family is optioned when the BOM needs that extra field.