1.1 Certificates: CCC,CE,CB,TUV; 

1.2 Standard: IEC/EN 60947-2 ,RoHS; 

1.3 Rated voltage up to 1000V, Rated current up to 63A; 

1.4 Protection of circuits against overload currents; 

1.5 Protection of circuits against short-circuit currents; 1.6 NB1-63 DC circuit-breakers are used incommunication systems and PV DC systems.