What you're quoting
The ABB ACS800-U1-0070-5-P901 is an AC drive on the ACS800-U1 wall-mount frame, listed in the Motors & Motor Controls › Drives › Motor Drives line at 34.02 kgs — a real cabinet-mount unit, not a slim-panel module, so plan the lift and the gland-plate layout around that mass before you commit the BOM line.
Class and where it sits in the panel
As a Motor Drives entry it carries the standard drive job — converting a fixed mains supply into a variable-frequency output for an induction or permanent-magnet motor. The ACS800-U1 family is the wall-mount / cabinet-build form factor rather than a bookshelf module, so it bolts into the back plate of a control cabinet and lands its power terminals straight onto the bus, with control wiring brought out to a terminal strip on the front face.