The ABB ACS380‑040S‑050A‑4 is a compact and reliable low‑voltage AC variable frequency drive (VFD) designed for industrial machinery and automation applications. It delivers precise speed and torque control for three‑phase motors, with integrated protection features and built‑in diagnostics. The drive is suitable for pumps, fans, conveyors, packaging machines, mixers, and other industrial equipment. It supports wall or cabinet installation and provides energy‑efficient performance for simplified machine control and process automation.