What you're holding
The ABB ACS800-01-0016-3+P901 is an AC drive from the wall-mount ACS800-01 family, sitting in the Motor Drives line of the ABB drives catalogue. At 6.38 kg it lands in the same handling class as the typical ACS800-01 frame, so a single installer can lift it onto the backplate without rigging — plan the panel slot for the standard ACS800-01 footprint rather than the heavier ACS880-01-021A-5 (7.71 kg) bracket.
Sourcing posture
The P901 suffix on the order code is part of the device configuration string the buyer needs to match on the nameplate against the PO line — verify the suffix character-for-character before releasing the PO, because re-flashing firmware does not retroactively add a hardware option.
Commissioning notes
Treat this drive as an ACS800-01 frame unit: motor cable length, dV/dt behaviour, and any output-filter requirement follow the ACS800-01 derating curves in the drive documentation, not the ACS880 curves — and on long motor runs (above the cable-length limit for unfiltered operation) an output dV/dt filter is the fix that protects the motor winding insulation from reflected-wave overvoltage. Confirm the three-phase supply class and the motor nameplate data against the drive rating before first start; the +P901 configuration suffix is the line the panel-builder needs to read off the drive label and stamp onto the as-built drawing so the parameter file and the hardware option match on the next FAT.