Square D,COMBO STARTER 600VAC 45A NEMA,3,3-Phase,3P,50HP@460/575Vac,600 Vac,90 A,Box Lug,Dust tight and Drip tight (Indoor),Fusible Disconnect,NEMA 12,Non-Reversing Combination Starter,Primary 480Vac@60Hz - Secondary 120Vac@60Hz,S,UL Listed - CSA Certified,Used for Full-Voltage Starting and Stopping of AC Squirrel Cage Motors - Disconnect and Starter in One Package,melting alloy