Hydraulic/Magnetic Circuit Breaker - 3 Pole - 277VAC/80VDC - Handle Actator (One Per Multipole Unit) - Without Aux Switch - Screw 8-32 (Bus Type) - ON-OFF Legend - Black Actuator - 6-32 x 0.195 Inches Threaded Insert (Two Per Pole) - UL Recognized & CSA A