What the order code is buying
The ACS800-01-0020-3+E200+P901+P915: Packaged mass is 13.56 kg, which puts the unit at the upper end of a one-person panel-mount lift and means it ships and stores as a single drive, not a component tray — relevant for MRO shelf planning and for the panel builder sizing the backplate fixings.
Sourcing posture for the configured build
Because the +E200, +P901 and +P915 codes are configuration suffixes on the ACS800-01-0020-3 base, the BOM line is quoted to order against the full option string; partial or mismatched option codes on incoming material are a common acceptance fail, so the order code needs to be cross-checked character-for-character on the unit label before sign-off.
Panel drop-in question versus the ACS880 series
A panel built around the ACS800-01-0020-3+E200+P901+P915 will not simply accept an ACS880-01-034A-5, ACS880-01-027A-5, or ACS880-01-040A-5: those are the current-generation ACS880 platform in the same Motor Drives class, and the ACS880-01-034A-5 carries a different mechanical envelope at 10.43 kg versus the 13.56 kg of the ACS800-01-0020-3 build, which is the kind of gap that drives a backplate rework and a re-rating of the cooling clearance, not a wiring-only swap.