SM3.series moulded case circuit breaker, It’s applicable circuit of AC 50/60HZ,rated insulation volage 690v(SM3-125 500V),rated operationg voltage AC 690V or below,rated operating current 12.5-1600A,for distribute energy of electric and infrequent making and breading circuit in normal condition. The circuit-breaders are provided with the function of the protection against overload and short circuit and under-volatge.The circuit breaker comply with standard of IEC60947-2.The circuit-breakers are double insulating (Inm=250A or above),the control circuit of the accessories is set apart with the main circuit,and doesn’t need to open the cover of the circuit breaker when install the accessories. |
