Manual Motor Starter, NEMA Size Not Applicable, Horsepower @ Single Phase - 120V AC 7 1/2 hp, Horsepower @ Single Phase - 240V AC 20 hp, Maximum Voltage Rating 690V AC, Number of Poles 3, Operator Selector Switch, Phase Three, Current AC 100 A, Horsepower @ Three Phase - 208V AC 30 hp, Horsepower @ Three Phase - 240V AC 40 hp, Horsepower @ Three Phase - 480V AC 75 hp, Series Sirius 3RV20, Horsepower @ Three Phase - 600V AC 100 hp, Maximum Overload Relay Current Setting 100 A