切断器

例句：

1. 1.The power line was cut off by the storm.
   暴风雨切断了电源线。
2. 2. He cut off his phone when he realized he had forgotten it at home.
   他意识到他把手机忘在家里了，于是切断了电话。
3. 3. The company decided to cut off all communication with the supplier.
   公司决定与供应商断绝一切联系。