The ABB 3AUD0000004279 is an HVAC packaged drive with an integrated e-clipse bypass and disconnect, built for commercial and industrial HVAC duty. It's rated 100 Hp at 99 A under UL light-overload use, so it handles the fan and pump curves common in rooftop units and air handlers without oversizing the drive. Input is 500-600 V, 3-phase, 50/60 Hz — standard North American 480 V and 575 V systems both land inside that window.
NEMA 3R means it lives outside
The NEMA Type3R enclosure means this drive is built for outdoor mounting — rain, sleet, and ice-resistant. No need for a separate weather hood or a conditioned electrical room. That's the whole point of the packaged format: the bypass, disconnect, and drive come in one box, wall-mounted, ready for a rooftop or pad. If you're swapping a failed unit on a chiller or AHU, this is the direct-fit replacement for the ACH580-BDR-099A-6+B058 assembly.