Application The latest designed CYD series circuit breakers,neoteric in structure,light in weight,reliable and excellent in performance,are mainly applied to the AC 50Hz/60Hz circuit with rated voltage 230V/400V or less.rated current up to 63A and provide circuits of modern buildings with overload and short-circuit protections,and it can also be used for operating and isolating the circuit infrequently.The products comply with IEC60898&BS3871. Electrical Specification 1.Conforms to standard of electrical:EN60898(IEC898) GB10963-99 2.Rated voltage(Ue):230V/400A;50/60Hz 3.Rated breaking capacity:10KA IEC898(0.5-63A)/15KA IEC947-2(0.5-63A) 4.Short circuit breaking capacity of DC:Max.48V(YL7?10KA)single pole/Max.250V(YL7-DC,6KA)single pole 5.Performance:C,D charactisistic curve 6.Max.fuse that can be connected to:100Agl(>10KA) 7.Selective grade:3 8.Working ambient temperature:-5 to + 40 Degree 9.Enclosed protective class:iP40 (Under mounting) 10.Electrical Life:Not less of 8000 times switching operation 11.Mechanical Life:Not less of 20000 times switching operation