IEC 61810-4:20 20适用于一般控制电路中带有簧片开关（簧片触点）的机电初级继电器。它根据IEC 61810系列和IEC 62246系列的部分定义了电气工程或电子所有领域的基本功能和安全要求。 IEC 61810-4:20 20定义了IEC 61810-1的技术偏差/补充。它规定了型式试验、常规试验、特殊试验和环境试验，以确认应用的服务条件。

IEC 61810-4:2020 applies to electromechanical elementary relays with reed switches (reed contacts) incorporated into general control circuits. It defines the basic functional and safety requirements in all areas of electrical engineering or electronics in accordance with the parts of IEC 61810 series and IEC 62246 series.
IEC 61810-4:2020 defines technical deviations/additions to IEC 61810-1. It specifies type tests, routine tests, special tests and environmental tests to confirm the service conditions for applications.