ABB ACS800-U4-0170-5+E208+P901 Drive, EOL Hot

Will the ACS800-U4-0170-5+E208+P901 drop into a panel that was specified around the ACS880-01-156A-5?

The two are different ABB low-voltage drive platforms — ACS800-U4 is the predecessor wall-mount line, ACS880-01 is the current-generation successor — so they are not a same-form-factor swap. The ACS880-01-156A-5 ships at 55.00 kgs against this drive's 124.74 kgs, which alone tells the panel builder the footprint, mounting pattern, and cable layout are not the same; a drop-in is not a safe assumption and needs a side-by-side drawing review, not a part-number substitution.