断路器可以防止电路过载。

A circuit breaker can prevent circuit overloads.

你知道如何重置断路器吗？

Do you know how to reset the circuit breaker?

如果有过电流，断路器会跳闸。

The circuit breaker will trip if there is an overcurrent.

安装新的断路器需要专业电工。

Installing a new circuit breaker requires a professional electrician.

这个断路器的额定电压为15千伏。

The circuit breaker is rated for 15 kV.