HVAC drive with integrated circuit breaker disconnect
The ABB 3AUD0000000140 is an HVAC-specific drive in the ACH580 family, combining a variable-frequency drive with a built-in circuit breaker disconnect in a single NEMA Type3R enclosure. It accepts 3-phase 208-240 V input and delivers 75 Hp (211 A) under UL light-overload duty — the rating that governs continuous fan and pump loads in commercial HVAC applications.
What the UL ratings mean for fit
The 75 Hp / 211 A light-overload rating (UL) is the figure that decides whether this drive handles your motor. Light-overload means 110 % current for 60 s every 10 minutes — typical for centrifugal fans, pumps, and compressors that don't need starting torque beyond the fan curve. The NEMA Type3R enclosure means the drive is rainproof and sleet-resistant, rated for outdoor installation under a roof eave or on an exterior wall, not for washdown or submersion.
Panel and site integration notes
The integrated circuit breaker disconnect eliminates a separate disconnect switch and enclosure — one line entry, one wiring point. The NEMA Type3R enclosure is rainproof and sleet-resistant, intended for outdoor mounting where the drive is under a roof overhang or on an exterior wall.
