The ABB 3AUD0000000034 is an HVAC packaged drive — a complete variable-frequency drive with an integrated e-clipse bypass and disconnect switch, housed in a NEMA Type 3R enclosure for outdoor or washdown-area installation. It is rated for 100 Hp light-overload use per UL, delivering 124 A continuous at 440-480 V three-phase, 50/60 Hz. This is the drive you spec when the line needs a single SKU that includes the bypass and disconnect, saving panel space and wiring time on rooftop units or mechanical-room installations.
The 124 A light-overload rating (UL) governs motor starting and running current for a 100 Hp load — this is the number that decides whether the drive can handle your fan or pump without tripping on inrush. The 440-480 V input range covers common North American three-phase supplies; the 50/60 Hz frequency acceptance means it works on both 50 Hz and 60 Hz grids without derating. NEMA 3R enclosure protects against rain and sleet, so it mounts outdoors on a roof curb or wall bracket without an additional weather hood.