What it is
The ABB ACS800-U1-0120-7+P901 is a wall-mount industrial frequency drive in the ACS800-U1 single-drive chassis family, listed under Motors & Motor Controls / Drives / Motor Drives. The order code reads ACS800-U1-0120-7+P901 exactly as printed on the ASEA BROWN BOVERI nameplate; the +P901 suffix is an encoded option tail, not a separate catalogue entry. It weighs 67.13 kg, which is the cabinet-mounting figure a panel builder needs to budget for the wall bracket, fixing points and lift clearance — this is a one-person-with-aid unit, not a hand-carry spare.
Where the class sits in the panel
ACS800-U1 drives are the wall-mount generation that preceded the current ACS880-01 and ACS580-01 lines on ABB's low-voltage drives roadmap. They show up on industrial panel bills of materials for motor speed control on conveyors, mixers, fans and pumps where the installer wanted a direct-to-mains wall unit rather than a cabinet module.