Sprecher + Schuh PFS-0317-600V PFS series softstarter for three-phase AC motors. Rated 317A, suitable for motors up to 100 HP @ 200V / 125 HP @ 230V / 250 HP @ 460V / 300 HP @ 575V. Features adjustable ramp times, current limiting, and comprehensive motor protection (overload, phase loss, phase reversal, locked rotor). Integral bypass contactor reduces heat generation during steady-state operation. Meets IEC 60947-4-2, UL 508 Listed and CSA Certified. Ideal for fans, compressors, conveyors, pumps, and general industrial motor starting applications.