under-current circuit breaker

例句：

1. 1. The under-current circuit breaker is designed to protect the electrical system from damage during a power outage.
   过电流保护器设计用来在停电时保护电气系统免受损害。
2. 2.During an electrical fault, the under-current circuit breaker will automatically shut off the power to prevent further damage.
   在发生电气故障时，过电流保护器会自动切断电源以防止进一步损坏。
3. 3. The under-current circuit breaker is crucial for maintaining the stability of the electrical grid.
   过电流保护器对于维护电网的稳定性至关重要。