IS200TTURH1BEC

今天继电器已应用到家庭及工业控制的各个领域。他们比以往的产品具有更高的可靠性。但是，这也是随之带来的一些问题。如绝大多数控制继电器都是长期磨损和疲劳工作条件下进行的，容易损坏。而且继电器的触点容易产生电弧，甚至会熔在一起产生误操作，引起严重的后果。再者，对一个具体使用的装有上百个继电器的设备，其控制箱将是庞大而笨重的。在全负荷运载的情况下，大的继电器将产生大量的热及噪声，同时也消耗了大量的电能。并且继电器控制系统必须是手工接线、安装，如果有简单的改动，也需要花费大量时间及人力和物力去改制、安装和调试。

 

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