The ABB 3AUD0000003152 is an HVAC enclosed ultra-low harmonic drive with an integrated circuit breaker, rated for 350 Hp light-overload duty at 460 V with 414 A output current under UL listing. It accepts 440–480 V three-phase input at 50/60 Hz and comes in a NEMA Type 1 enclosure with IP21 protection, frame size R11.
The 350 Hp / 414 A light-overload rating (UL) tells you this drive handles variable-torque HVAC loads like fans and centrifugal pumps up to that motor size without derating. Light-overload means it delivers full rated current continuously for the typical fan/pump duty cycle — no need to oversize for starting current. The 440–480 V three-phase input covers common North American 460 V and 480 V distribution; the 50/60 Hz rating means it works on either frequency without reconfiguration. The integrated circuit breaker eliminates a separate branch-circuit protective device in the panel — one less component to size, wire, and coordinate. The NEMA Type 1 enclosure is suitable for indoor installation where dripping water or dust ingress is not a concern; IP21 adds finger-probe protection against accidental contact with live parts during maintenance.
This drive is designed for HVAC applications — air handlers, cooling towers, chiller compressors, and large fan arrays in commercial buildings or industrial plants. The ultra-low harmonic design meets IEEE 519 total harmonic distortion limits without external filters, simplifying compliance for building management systems and utility interconnection.