reverse power relay

例句：

1. 1. The reverse power relay is used to switch the current in a circuit when the main power supply fails.
   反向功率继电器用于在主电源失效时切换电路中的电流。
2. 2. The engineers used the reverse power relay to quickly restore power to the damaged area.
   工程师们使用反向功率继电器迅速恢复了受损区域的电力。
3. 3.The reverse power relay was designed to protect against overcurrent and potential damage during fault conditions.
   反向功率继电器被设计来防止过电流和故障条件下的潜在损害。