no-load relay

例句：

1. 1.The no-load relay is used to protect the circuit from overloading.
   无负载继电器用于保护电路免受过载。
2. 2.The no-load relay was designed to prevent power failures during power outages.
   无负载继电器被设计成在停电期间防止电力故障。
3. 3. The no-load relay is a crucial component in the electrical system, ensuring safe and reliable operation.
   无负载继电器是电气系统中的关键组件，确保安全和可靠的运行。