ABB ACH550-UH-072A-4 Variable Frequency Drive

ABB ACH550-UH-072A-4 is a 50 HP, 460 V three-phase variable-frequency drive designed for general-purpose motor control in HVAC systems and light industrial equipment, allowing precise speed adjustment of fans, pumps, and other loads to match process requirements. The -UH-072A-4 variant denotes a 72 A unit in the ACH550 family and places it in the R4 frame, intended for 380–480 VAC three-phase service with nominal voltage around 460 V and 50/60 Hz operation, making it suitable for installation in standard power distribution environments used in commercial and industrial facilities. As part of ABB's ACH550 lineup, this drive is commonly used for HVAC and other general-purpose motor-control tasks where compact footprint and robust performance are prioritized; the model is publicly listed by ABB as a general-purpose inverter, and it is available as a factory-authorized ABB part through distributors and service providers, reflecting ABB's reliability and compatibility with ABB motor control ecosystems.