Cutler-Hammer Miniature Circuit Breaker, 20 A, 120/240 VAC, 10 kA Interrupt Rating, 2 Poles, 1 ph Phase, Thermal Magnetic Trip, 14 to 4 AWG Wire, Bolt-On Mounting, 4 in Width, 3-1/2 in Length, 3-1/4 in Height Specifications Ampere Rating (A) 20 (2) Interupting Rating 10000A VAC (V) 120 Interupting Rating 10000A Temperature Rating 40°C Aprovals CSA certified Mounting Type Bolt On Number of Poles 1-Pole Type DNBA Wire Size #14 to #4 AWG(Al/Cu) Switching Duty Rated Yes