The dual protection mechanism of surge protectors and residual current circuit breakers is adopted in rural lighting electrical ready boards, which is an important measure to ensure rural electricity safety and improve power supply reliability.

Surge protector is a key equipment for dealing with overvoltage damage such as lightning. In rural areas, due to frequent lightning activity and the fact that distribution lines are mostly located in open areas, they are susceptible to lightning strikes. When lightning strikes transmission lines or nearby areas, it can generate extremely high transient overvoltages. If directly applied to lighting equipment, it can cause serious consequences such as insulation breakdown and equipment burnout. Surge protectors, through their internal nonlinear components, quickly conduct when overvoltage occurs, limiting the overvoltage within the acceptable range of the equipment and introducing lightning currents into the ground, effectively protecting electrical ready boards and subsequent lighting equipment from lightning damage.

Leakage circuit breakers are mainly used to prevent electric shock accidents and electrical fires caused by leakage. In rural lighting systems, leakage may occur due to aging circuits, insulation damage, or improper human operation. Leakage circuit breakers can monitor the leakage current in the circuit in real time. Once the leakage current exceeds the set value, the circuit will be cut off in a very short time, avoiding electric shock injuries and preventing electrical fires caused by leakage, ensuring the safety of rural residents' lives and property.

The combination of surge protectors and residual current circuit breakers is applied to rural lighting electrical ready boards, achieving dual prevention of overvoltage and leakage risks. Surge protectors resist external overvoltage shocks, while residual current circuit breakers monitor internal circuit safety. The two work together to greatly improve the safety and stability of rural lighting distribution systems, providing solid guarantees for normal production and daily electricity consumption in rural areas.