ABB ACH501-025-4-00P2 Variable Frequency Drive

ABB ACH501-025-4-00P2 is a 25 HP variable frequency drive (VFD) in ABB's ACH500 family, designed to control AC motors on 3‑phase 440–500 VAC systems. It accepts 440–500 VAC input on three phases and operates at 50/60 Hz, with a nominal current around 30.6 A under full‑load conditions. The ACH501‑025‑4‑00P2 is described as a general‑purpose inverter and drive suitable for HVAC applications and broader motor‑control tasks in industrial settings. As part of the ACH500 series, it is commonly used in HVAC systems for variable‑speed control of fans, pumps, and compressors, as evidenced by HVAC‑focused listings for ACH500 family. The part number denotes a 25 HP class device, consistent with ABB labeling and vendor listings. Multiple distributors, including Radwell and Southland Electrical, list the ACH501‑025‑4‑00P2 with 25 HP and 440–500 VAC 3‑phase input, confirming its design and market availability.