Square D,2SPEED STARTER 600VAC 45A NEMA,120 V AC 60 Hz-110 V AC 50 Hz,120VAC@60Hz - 110VAC@50Hz,2,20 hp 460/575 V AC 3 phases-7.5 hp 200 V AC 3 phases-10 hp 230 V AC 3 phases,3-Phase,3-Pole,45A,NEMA Rated - UL Listed,Open,Screw-On-Clamp,Two-Speed Starter,melting alloy,open box