This distribution box divide into two types: flush and surface mounting  type. There are 2 to 64 modules. It applies to the terminal circuit with AC 50Hz, 220V or 380V voltage, the total current under 100A. It can random assemble modulus electrical apparatus, mini-type electrical switches such as C45 socket, leakage switch, etc. Installed in the TH35 standard guideway, the products have various protection devices against leakage, electric shock, short circuit, and overload. There is input and output device for lines and earthing line. It has the advantages of convenient installation and luxurious future.