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The switch is connected in parallel with a thermal relay.
开关并接有热继电器。
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。
IC type overload protection circuit has gradually replaced thermal relay overload protection mode.
煤电钻采用热继电器进行过载保护方式已逐渐被IC型过载保护电路取代。
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