Eaton Cutler-Hammer BR220 BR-Series Circuit Breaker, 2-Pole, 120/240-VAC, 20-Amp N/A Importado Primary function of a circuit breaker is to protect the wire from overheating (overload) and fault currents (short circuit). Amperage rating: 20A. For use in type BR load centers. Voltage rating is 120/240V. Type BR breakers are UL Approved for BR Type Panels