The electrical characteristics of railway safety relay are mainly involved with operating value, releasing value, reversing value and so on.

铁路安全继电器需要测试的主要电气参数包括：工作值、释放值、反向工作值等。

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To make the process of temperature control more ideal by introduce breaker with magnetic releasing, solid relay, and optional alarm protective type.

在早期组件预热炉温控线路基础上，引入带分励脱扣装置断路器、固态断电器、并选择适当报警保护方式，使控温过程更理想。

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