按主觸點連接回路的形式分為：直
接觸器（圖5）
接觸器（圖5）
流接觸器、交流接觸器。
按操作機構分為：電磁式接觸器、永磁式接觸器。
永磁交流接觸器是利用磁極的同性相斥、用永磁驅動機構取代傳統的電磁鐵驅動機構而形成的一種微功耗接觸器國內成熟的產品型號：CJ20J、NSFC1、NSFC2、NSFC3、NSFC4、NSFC5、NSFC12、NSFC19、CJ40J、NSFMR。3TH42441XA4
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半導體接觸器：半導體接觸器是一種通過改變電路回路的導通狀態和斷路狀態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、異性相吸的原理，用永磁驅動機構取代傳統的電磁鐵驅動機構而形成的一種微功耗接觸器。
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直流接觸器作為應用廣泛的電氣開關之一，其生產和需求數量巨大，在正常使用過程中，電磁鐵線圈一直通電工作，產生電磁吸力，保證鐵芯和銜鐵吸合，帶動動、靜觸頭閉合，接通電路。在上述過程中，線圈本身存在電阻，持續消耗電能，這是直流接觸器主要的使用成本之一，浪費了大量的能源和財產，因此，如何降低直流接觸器的工作耗能，是研究直流接觸器的關鍵點和重難點。直流接觸器永磁操動機構是一種在傳統直流接觸器電磁操動機構基礎上發展而來，將電磁操動機構和永磁鐵相結合的混合型操動機構，不單單使用原有的電磁吸力和彈簧反力作為鐵心吸合與分離的動力，而是加入了永磁鐵對鐵心的吸引力，采用儲能電容充放電提供合閘、分閘電力，通常稱之為“電磁操動，永磁保持，電子控制”。在分、合閘運動過程中，電磁吸力，永磁吸力與彈簧作用力共同作用，在穩定工作過程中，采用永磁吸力代替之前的電磁吸力，保持銜鐵與鐵芯心的吸合狀態。一則，永磁操動機構大量節約了保持線圈的電能消耗，環保節能。二則，永磁體保持吸合與電磁吸合相比，噪音低，無污染。三則，永磁操動機構剔除了電磁機構中一系列復雜繁瑣鎖扣保護裝置，大大提高了接觸器操動機構的工作可靠性，降低了生產工序和成本，減小了接觸器的體積。 [1]
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