... is mainly used to the circuit of AC 50Hz, 230V in single pole, 400V in ... poles . The products of C60N belong to the advanced level of the nineties in the international instead of the older ... , long live etc. They are mainly adapted to the circuit of AC 50Hz. 230V in single pole, 400V in ... double, three, four poles for protecting overload and short circuit meanwhile, they are also used in turning on or ...