primary interrupter

例句：

1. 1. The primary interrupterin the circuit is responsible for detectingand isolating faults.
   电路中的初级断路器负责检测和隔离故障。
2. 2. The primary interrupter in the power system is designedto protect the entire system from damage.
   电力系统中的初级断路器设计用来保护整个系统免受损害。
3. 3. During a power outage,the primary interrupter prevents theflow of electricity until the problem is resolved.
   在停电期间，初级断路器阻止电流流动直到问题得到解决。