In the rural lighting power supply system, the electrical ready board is the core hub for power distribution and control. It is crucial to configure surge protectors and circuit breakers for it and establish a dual protection mechanism to ensure electrical safety and stability.

Rural areas are located in open spaces, and lighting circuits are susceptible to lightning waves. When struck by lightning, a strong lightning current will invade along the power supply line, generating extremely high surge voltage. Surge protectors are like "safety guards" that can instantly discharge lightning current to the ground and clamp overvoltage. When lightning waves strike, its core components (such as zinc oxide varistors) quickly conduct, limiting the surge voltage of tens of thousands of volts within the kilovolt range that the equipment can withstand, avoiding the breakdown and burning of lamps, switches, etc., and safeguarding the safety of the "heart" of the lighting system.

Circuit breakers are the "loyal sentinels" of circuits, responsible for overload and short-circuit protection. The electricity consumption scenarios for rural lighting are complex, and the electricity load fluctuates greatly. If overload is caused by aging lines, private electrical appliances, etc., the circuit breaker thermal release will bend the bimetallic strip due to the current thermal effect, pushing the release mechanism to cut off the circuit; If a short circuit fault occurs, the electromagnetic release will instantly operate under the strong magnetic field, and the circuit can be disconnected within 0.1 seconds to prevent the wire from overheating and melting, which may cause a fire.

The two have clear division of labor and cooperate with each other. Surge protectors prioritize resisting external high-energy impacts, while circuit breakers focus on handling internal circuit abnormalities. This dual protection forms a three-dimensional protective net, which not only avoids damage to lighting equipment due to lightning strikes, but also eliminates safety hazards in daily electricity use.

During installation, the surge protector should be installed at the front end of the electrical ready board, close to the main switch of the household, to ensure that lightning waves are intercepted first and foremost; Circuit breakers are selected and configured according to different lighting circuit loads. In daily operation and maintenance, it is necessary to regularly check the degradation indicator light of the surge protector, check whether the circuit breaker contacts are oxidized, and whether the opening and closing are flexible. Only in this way can surge protectors and circuit breakers continue to function effectively in rural lighting electrical ready boards, laying a solid foundation for safe night lighting in rural areas