The serial Bus bar is new product launched by our company according to the market requirement,which break thup the old connection ways of mini ciruit breaker for years.It extend the interface and reduce the power consumption and temperature increasing.Because it lays inside the insultion slot and cant be people,it is the character of safe reliable Time-saving convenience,cheap and etc.It is very popular with customers for good electric conduction low contacting resistance and full qualification,which mad of copper.