When the underground main line cable needs to realize multi-circuit branch power distribution at a certain distance, the cable branch box used as an important supporting equipment for power distribution is an economical, convenient and safe method, especially suitable. When the underground main line cable needs to realize multi-circuit branch power distribution at a certain distance, the cable branch box used as an important supporting equipment for power distribution is an economical, convenient and safe method, especially suitable. Cable distribution boxes are crucial nodal devices in power distribution networks. Their core functions can be summarized as: enabling efficient cable branching, safe isolation, flexible control, and reliable protection of cable lines, thereby improving the reliability, flexibility, and. This guide is designed to provide a comprehensive overview of what cable branch boxes are, their functionality, and why they are indispensable in various applications. Its main function is to split or connect cables, primarily serving the purpose of cable branching and cable connection. With the development of the cable-based distribution network, when independent loads with relatively small capacity are.