ABB ACS550-U1-03A3-4BO55 Variable Frequency Drive

ABB ACS550-U1-03A3-4BO55 Variable Frequency Drive is a compact, general‑purpose 3‑phase drive designed for 380–480 V mains. The 1.1 kW (1.5 HP) variant provides a nominal 3.3 A output to drive small‑to‑mid sized motors, making it suitable for applications such as fans, pumps, and light conveyors where precise speed control improves energy efficiency. This wall‑mountable unit belongs to ABB’s ACS550 family, which emphasizes easy configuration and standard protection features in low‑voltage drives. With 3‑phase input and an adjustable output frequency, it enables smooth starts and reliable speed control across a range of light industrial and commercial tasks.