Manual Motor Starter, NEMA Size Not Applicable, Maximum Voltage Rating 690V AC, Number of Poles 3, Operator Selector Switch, Phase Three, Current AC 1 A, Horsepower @ Three Phase - 480V AC 1/2 hp, Series Sirius 3RV20, Horsepower @ Three Phase - 600V AC 1/2 hp, Maximum Overload Relay Current Setting 1 A, Minimum Overload Relay Current Setting 0.7 A, Mounting Style DIN Rail, NEMA Enclosure Rating No Enclosure, Overload Protection Type Thermal, Starter Style IEC