The leakage protection switch of Small Power Distribution Board not only has the leakage protection function, but also is the main function of the leakage protector to ensure personal safety by tripping when people touch electrified power; If the electrical equipment is. The leakage protection switch of Small Power Distribution Board not only has the leakage protection function, but also is the main function of the leakage protector to ensure personal safety by tripping when people touch electrified power; If the electrical equipment is. A leakage protector (RCD), also known as a residual current switch (LDS) or leakage circuit breaker, is primarily used to protect against potentially fatal electric shock and equipment leakage. It provides overload and short-circuit protection, protecting lines or loads from overload and short. Let's make a hypothesis: a newly built residential area introduces a 10kV incoming line and builds a distribution room. The outgoing line from the low-voltage end of the transformer is 0. 4kV to the distribution cabinet (primary distribution cabinet), then the outgoing line is led to the. Electrical leakage protectors can be classified according to their protection functions, structural features, installation methods, operating modes, number of poles and lines, action sensitivity, etc. When leakage or electric shock occurs and reach the operating current value defined by the protector, it will immediately act within a limited time and automatically. The Small Power Distribution Board is convenient for management and maintenance in case of circuit failure. The Small Power Distribution Board, distribution panel, etc.