NC 100H high breaking capacity circuit breaker is used for AC 50Hz or 60Hz, single pole240V, 2.3.4poles415V, for protecting the circuit which overload and short citcuit may take place. It can be used in lighting and electric motor distribution system. Meantime it is used to unfrequently switching on and off the electric appartus and lighting circuits under normal condition brcaking capacity is up to standard of IEC947-7 10KA.