The ABB 3AUD0000004293 is an ACH580-series HVAC drive with an integrated disconnect, UL-listed for light-overload duty at 100 Hp and 99 A output. It accepts a 500 to 600 V three-phase input at 50/60 Hz and comes in a NEMA Type 3R enclosure — rainproof and sleet-resistant, suitable for outdoor rooftop or wall mounting on commercial HVAC equipment.
The 99 A light-overload (UL) rating defines the maximum continuous output current for variable-torque loads like fans and centrifugal pumps — the core HVAC duty. The 100 Hp figure is the corresponding motor horsepower at that current. Because this is a light-overload rating, not a heavy-duty (constant-torque) one, it is sized for the quadratic torque curve of a fan or pump, not a conveyor or extruder. The 500-600 V input range covers 480 V and 575 V nominal systems common in North American commercial buildings; the 50/60 Hz rating confirms it handles both line frequencies without derating.
Deployment context
The NEMA Type 3R enclosure means this drive can be mounted outdoors — on a roof, an exterior wall, or a mechanical yard — without additional weather protection. The integrated disconnect simplifies installation by combining the line-side isolation switch into the drive chassis, reducing panel wiring and enclosure space. For indoor installations, the same form factor fits into a mechanical room or equipment closet where rainproof construction is not needed but the rugged enclosure still protects against falling dirt and dripping water.