Miniature circuit breaker distribution box: welding production process is adopted. It is a directional distribution box that only installs small track circuit breakers. It has leakage overload and short-circuit protection function. The internal structure of the box is a track type mounting bracket, which can adjust the height appropriately according to the switch. The opening size of the inner door can be adjusted according to the opening of the switch circuit. It is suitable for lighting and power distribution in industrial and mining areas and various building sites.