The ABB 3AUD0000001550 is an ACH580 HVAC packaged ultra-low harmonic drive that includes a non-fused disconnect switch, simplifying panel wiring by combining the drive and disconnecting means in one enclosure. It is rated for 3-phase 440-480 V input at 50/60 Hz, delivering 150 Hp and 180 A under UL light-overload conditions — the rating that governs continuous motor duty for fan, pump, and compressor loads in commercial HVAC.
Enclosure and protection
NEMA Type 1 enclosure (IP21) means it is intended for indoor installation where falling dirt and dripping water are the main concerns — typical for mechanical rooms and rooftop unit enclosures, not washdown or outdoor exposure. Frame size R8 places it in the larger chassis tier of the ACH580 family; plan panel depth and lifting provisions accordingly.