The ABB 3AXD50000302123 is the order code for an ACH580-01-027A-6+B056 wall-mounted drive built for HVAC duty. It runs on 500... 600 V three-phase at 50/60 Hz, delivering 27 A continuous output in normal use and 25 Hp under light-overload profile. The enclosure is IP55 / NEMA Type12, so it handles washdown areas and dusty mechanical rooms without a separate cabinet.
Frame size R3. Wall-mounting only — no flange kit required for the IP55 rating. The NEMA Type12 gasket seals against falling dirt and non-corrosive liquids, so you can mount it directly on the wall in a pump room or rooftop air handler without an extra enclosure.