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接触器是一种应用于远距离控制交直流主电路或大容量电路的通断的自动控制开关,具备以低电压控制高电压,低电流控制高电流的功能。应用于航空条件下称为航空接触器,它可以安装在远离驾驶员的地方,而驾驶员通过操控操纵安装在驾驶舱的电门来控制它的线圈机构,实现控制电气线路的目的。不管是交流接触器还是直流接触器,它的控制线圈基本都是使用直流电励磁,交流电磁铁的寿命相对来说会比较短,容易产生振动,不利于触点的可靠性。
Contactor is a kind of on-off automatic control switch applied to long-distance control AC or DC main circuit or high-capacity circuit. It has the function of controlling high voltage with low voltage and low current with high current. Used in aviation conditions called the air contactor, it can be installed away from the driver’s place, and the driver by controlling the electric door mounted in the cockpit to control its coil mechanism, to achieve the purpose of controlling the electric circuit. Regardless of AC contactor or DC contactor, its control coil is basically the use of DC excitation, AC electromagnet life will be relatively short, prone to vibration, is not conducive to the reliability of the contacts.