HVAC Enclosed Ultra-Low Harmonic Drive, 125 Hp
The ABB 3AUD0000003548 is an HVAC enclosed ultra-low harmonic drive with an integrated circuit breaker, rated for 125 Hp at 460 V under UL light-overload duty, delivering 156 A output current. It operates on 3-phase 440-480 V input, 50/60 Hz, and comes in a NEMA Type 1 enclosure with IP21 protection — suitable for indoor installation in commercial HVAC mechanical rooms or light industrial environments where the drive needs protection from falling dirt and dripping water. The R8 frame size tells you the physical footprint and mounting pattern — this is a larger-frame drive sized for the 156 A output stage, so verify panel cutout and bus bar spacing against the R8 dimensional drawing before committing the layout.
For BOM freeze or project planning, the active status means no imminent last-time-buy risk — the drive can be specified into new designs with confidence in ongoing supply.
The NEMA Type 1 enclosure allows wall-mount installation without additional housing in clean indoor spaces. The integrated circuit breaker reduces external panel wiring — one less component to size and mount in the enclosure. Confirm the breaker's interrupting rating coordinates with your upstream fault current.