Built - in AC contactor, thermal relay and universal self - reset converting switch.

内装交流接触器, 热继电器,自复位万能转换开关等.

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Proper selection and use of thermal relay are over expounded from six aspects.

从六个方面全面总结论述了热继电器合理选择与使用的情况.

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YD electrical short - circuit and overload protection, it automatically switches and thermal relay ZK JR guarantee.

电机YD具有短路和过载保护, 它有自动开关ZK和热继电器JR保证.

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