The GE Q-Line 15 Amp 2 in. Double-Pole Circuit Breaker comes in a heat-resistant thermoset case to add stability and structural integrity to the breaker unit. The circuit breaker features tin-plated copper stabs for corrosion resistance, creating a more reliable and permanent connection. The double-pole breaker trips to the center and contains a dedicated calibration screw which is cemented in to prevent shifting.