What this drive is
The ABB ACS800-U1-0020-5+K462+L502+P901 is a wall-mount industrial AC drive from the ACS800-U1 series, factory-configured with three option codes (+K462, +L502, +P901) that the buyer must order as one string because each suffix changes what ships — the bare frame number alone will not match a configured unit. It sits in the Motor Drives class under the broader Drives category, which is the class of product used to vary speed and torque of three-phase AC induction or permanent-magnet motors in industrial panels and machinery.
Reading the option-code string
The +K462, +L502, and +P901 suffixes are ordering-time options layered onto the base ACS800-U1-0020-5 frame; they are not field-installable accessories in the loose-accessory sense, so when the line is down a replacement has to be ordered with the same suffix string to be a like-for-like drop-in.
Panel-side handling
Listed mass is 14.06 kgs, which makes this a two-person lift into a wall-mount cutout and means the mounting surface has to carry that static load with the cable glanding factored in — it is a handling constraint, not a selection parameter.
Functional second-source question
For a buyer cross-shopping the ACS880-01-040A-5 as a possible second-source, the honest answer is that the ACS880 platform is the successor family to the ACS800, and the 040A-5 frame is the closest current-production candidate in the same current class — but because the suffix string on this seed unit (+K462/+L502/+P901) is ACS800-specific, a swap into a panel built around the ACS880-01-040A-5 still needs the option-by-option map reviewed against the ACS880's own suffix list before quoting, and it is not a guaranteed no-rewire drop-in.
Larger and smaller frames for context
The ACS880-01-034A-5 and ACS880-01-027A-5 frames sit one and two steps below the 040A-5 in that family. They are not like-for-like substitutes for the configured ACS800-U1-0020-5+K462+L502+P901 string; the suffix map must be reviewed separately.
Sourcing posture
The ACS800-U1 platform is a mature ABB line, and configured-string units like this one are most often specified into a BOM and quoted to order rather than pulled off the shelf; an RFQ against the full suffix string is the cleanest path to confirm availability and the supply window for the configured unit. If the configured string is no longer buildable new, the independent surplus and broker channel is the realistic route for a configured ACS800-U1-0020-5+K462+L502+P901, with the usual caveats on firmware revision, cosmetic condition, and warranty terms that any used industrial drive carries.