When selecting circuit breakers in the meter box, multiple factors need to be considered to ensure their reliability and safety.

Firstly, it is important to pay attention to the rated voltage of the circuit breaker and ensure that it matches the rated voltage of the power system. At the same time, the rated current of the circuit breaker should be greater than or equal to the maximum operating current of the circuit to prevent overload. In addition, the rated breaking current is also an important parameter that determines whether the circuit breaker can quickly cut off the circuit in the event of a short circuit fault.

Secondly, environmental conditions are also factors that need to be considered when selecting circuit breakers. For example, altitude, temperature, and humidity can all affect the performance of circuit breakers. Therefore, when choosing a circuit breaker, it should be ensured that it can adapt to the environmental conditions of the installation site.

In addition, brand and quality are also factors that cannot be ignored when selecting circuit breakers. High quality brand circuit breakers usually have better performance and longer service life, while providing better after-sales service.

Finally, for special application scenarios such as motor protection, it is necessary to select circuit breakers with corresponding protection functions according to specific needs.

In summary, the selection of circuit breakers in the meter box requires comprehensive consideration of multiple factors such as rated voltage, rated current, environmental conditions, brand quality, and special protection functions. By making reasonable choices, the safe and stable operation of the power system can be ensured.