半導(dǎo)體接觸器：半導(dǎo)體接觸器是一種通過改變電路回路的導(dǎo)通狀態(tài)和斷路狀態(tài)而完成電流操作的接觸器。
永磁接觸器：永磁交流接觸器是利用磁極的同性相斥、相吸的原理，用永磁驅(qū)動機(jī)構(gòu)取代傳統(tǒng)的電磁鐵驅(qū)動機(jī)構(gòu)而形成的一種微功耗接觸器。
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另一半是活動鐵芯，構(gòu)造和固定鐵芯一樣，用以帶動主接點和接點的閉合斷開。
20A以上的接觸器加有滅弧罩，利用電路斷開時產(chǎn)生的電磁力，快速拉斷電弧，保護(hù)接點。
接觸器可高頻率操作，做為電源開啟與切斷控制時﹐高操作頻率可達(dá)每小時1200次。
接觸器的使用壽命很高，機(jī)械壽命通常為數(shù)百萬次至一千萬次，電壽命一般則為數(shù)十萬次至數(shù)百萬次。
技術(shù)發(fā)展
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交流接觸器制作為一個整體，外形和性能也在不斷提高，但是功能始終不變。
接觸器（圖4）
接觸器（圖4）
無論技術(shù)的發(fā)展到什么程度，普通的交流接觸器還是有其重要的地位。
空氣式電磁接觸器（英文：Magnetic Contactor）：主要由接點系統(tǒng)、電磁操動系統(tǒng)、支架、接點和外殼（或底架）組成。
因為交流電磁接觸器的線圈一般采用交流電源供電，在接觸器激磁之后，通常會有一聲高分貝的“咯”的噪音，這也是電磁式接觸器的特色。3TH40040XR1
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