... is mainly used to the circuit of AC 50Hz, 230V in single pole, 400V in ... , 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 off ... the electric apparatus and lighting circuit under the normal condition. Mini Circuit Breaker( C60N)