Drive selection memo — ABB 3AUD0000000066
The ABB 3AUD0000000066 is a purpose-built HVAC drive from the ACH580 family, integrating a circuit breaker disconnect in a NEMA Type 3R enclosure. UL light-overload rating lands at 100 Hp with 124 A output current — sized for a 100 Hp fan or pump on 380-480 V three-phase supply. The NEMA 3R enclosure means it's rated for outdoor installation under eaves or on a wall where it sees rain, sleet, and snow, but not hose-down.
The 124 A output current at light-overload duty (UL) governs the motor size: it drives a 100 Hp induction motor continuously. The 380-480 V input range covers standard North American 460 V and European 400 V grids. 50/60 Hz line frequency is auto-detected — no configuration jumper needed for 50 Hz vs 60 Hz sites. The integrated circuit breaker disconnect eliminates the need for a separate disconnect switch in the line, saving panel space and wiring.
Deployment context
This drive is built for HVAC duty — fans, pumps, compressors in commercial buildings, data centers, or light industrial HVAC plants. The NEMA 3R enclosure lets it mount outdoors on a roof or exterior wall without a weather hood, as long as it's not directly sprayed. The integrated disconnect simplifies code compliance for the service entrance.