electric accessories of DZX2/4series circuit breaker conform to IEC standards,and comply withCCC,CE,UL,TUV.ROHS certificate According to need you can choose different electric accessories used in conjunction with DZX2/4 series circuit breaker in use processes to achieve the function of long-distance release,making and breaking indication,undervoltage or overvoltage protection. OF,SD,MX+OF,MN70%35 ...