Hydraulic/Magnetic Circuit Breaker - 1 Pole - 480VAC/277VAC - Handle (One Per Pole) - Without Aux Switch - Stud 1/4-20 - Dual Legend - Black Actuator - 6-32 x 0.195 inches Threaded Insert - UL Recognized STD 1077 - UL Recognized 1500 (ignition protected)