HVAC drive with disconnect, UL-rated for light-overload duty
The ABB 3AUD0000000082 is an HVAC drive with a built-in disconnect switch, UL-listed for light-overload use at 100 Hp and 124 A output. It accepts 380-480 V three-phase input at 50/60 Hz and comes in a NEMA Type3R enclosure, meaning it's rated for outdoor installation — rain-tight and sleet-resistant, suitable for rooftop units or exterior wall mounting without an extra weather hood.
The 124 A light-overload current rating (100 Hp at 460 V) sets the continuous motor capacity this drive can handle without derating. Light-overload (110% for 60 s) is standard for HVAC fan and pump applications where the load profile is steady, not peaking. The 380-480 V input range covers common North American 460 V and 480 V systems, plus European 400 V. NEMA Type3R means the enclosure sheds rain and resists ice formation — no additional rain shield needed for outdoor pad or rooftop installs.
Deployment context
Built-in disconnect simplifies panel wiring — no separate disconnect switch needed ahead of the drive, saving enclosure space and reducing interwiring. The Type3R enclosure lets it mount directly on the equipment skid or building exterior without a secondary weatherproof cabinet. For a rooftop AHU or a condenser fan array, this drive lands as a self-contained unit: power in, motor out, disconnect at the door.