HVAC ultra-low harmonic drive with integrated disconnect
The ABB 3AUD0000000732 is an ACH580-series HVAC enclosed ultra-low harmonic drive, built for 3-phase 440-480 V input at 50/60 Hz. It carries a non-fused disconnect switch inside the enclosure, so the line-side isolation is integral — no separate disconnect needed upstream in the panel. Rated for 5 Hp light-overload duty under UL, delivering 7.6 A continuous output. That 5 Hp figure is the UL nameplate rating for the drive's intended HVAC fan and pump loads; the drive itself can handle higher peak current during acceleration, but the continuous motor sizing stays at 5 Hp for UL-listed installations.
Enclosure and environmental fit
NEMA Type 1 enclosure with IP21 ingress protection — suitable for indoor installation where drips and falling dirt are the main concern, not washdown or outdoor exposure. The R3 frame size determines the mounting footprint and conduit entry locations; verify the R3 drilling plan against your backplate before cutting gland holes.