Drive selection memo — 3AUD0000000070
The ABB 3AUD0000000070 is an ACH580-series HVAC drive with an integrated circuit breaker disconnect, rated for 250 Hp light-overload use under UL and delivering 302 A output current. It accepts 380-480 V three-phase input at 50/60 Hz. The NEMA 3R enclosure means this drive is built for outdoor or unconditioned indoor installation — rain-tight and sleet-resistant, suitable for rooftop HVAC units or wall-mount on a mechanical mezzanine without an additional weather shelter. At 302 A light-overload, this unit drives a 250 Hp motor continuously; the integrated circuit breaker disconnect eliminates the need for a separate fused disconnect in the line, saving panel space and wiring labour on the install date.