ABB ACS550-01-045A-4 Variable Frequency Drive

The ABB ACS550-01-045A-4 Inverter Drive is a 3‑phase motor drive that provides variable speed control for industrial AC motors, enabling efficient operation in pumps, fans, conveyors, HVAC equipment, and general automation machinery. It accepts 380–480 V AC input (3‑phase) and delivers up to 45 A, with a power rating of about 30 kW (40 HP nominal at 460 V). The drive offers programmable 0–500 Hz operation with scalar (V/Hz) and vector control, plus a built‑in EMC filter and braking chopper. Enclosure is IP21 / UL Type 1, it is wall‑mounted, and it operates from 0 °C to +40 °C (higher with derating); common installations include water and wastewater facilities, material handling, air handling units, packaging equipment, and process control systems.