The ABB PSR37‑600‑70 is a compact soft starter designed for smooth starting and stopping of three‑phase AC motors in industrial applications. It belongs to ABB’s PSR series of soft starters, which are engineered to reduce mechanical and electrical stresses during motor start‑up and shutdown by using a controlled voltage ramp. This helps extend motor life, improves process reliability, and reduces inrush current compared to direct‑on‑line (DOL) starting.
