Low-voltage distribution box is a low-voltage distribution equipment designed in accordance with the technical specifications of the State Grid on the principle of safety, economy, rationality and reliability. It uses high-quality electrical components and is applicable to the indoor low-voltage distribution system with AC 50Hz, rated voltage 400V and rated insulation voltage 690V. It is used for power conversion, distribution, control and protection of power, lighting and distribution equipment. The product has the characteristics of high breaking capacity, good dynamic and thermal stability, flexible electrical scheme, strong practicability, novel structure, etc.