NC-100H high breaking capacity circuit breaker is used for AC 50/60HZ, single pole 240V, and 2,3,4 poles 415V for protecting the circuit that overload and short circuit may take place. It can be used in lighting and electric motor distribution system. Meantime, it is applicable to an unfrequented switch over the electric apparatus and lighting circuit under normal condition. Breaking capacity is up to standard of IEC947-710KA.