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3TF31001XA4
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3TF31001XF4

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。
3TH40311XM4
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直流電流與交流電流相比較，不存在周期性的電流數值過零點，因此，傳統接觸器開斷電路時，觸頭之間產生的電弧較為強烈，燃弧時間也比較長，以便充分釋放電路中剩余的能量。電弧的燃燒產生高溫和強光，對觸頭表面有嚴重的燒蝕作用，觸頭材料在多次開斷之后逐漸流失，觸頭電磨損嚴重時，導致直流接觸器報廢，不能開斷電路。 [1]
電力電子技術得以迅猛發展，人們將電力電子元件應用到直流接觸器中，巧妙的創造出一種混合式直流接觸器，使得直流接觸器向智能化、可控化邁進了新的一步。這種混合式接觸器利用傳統直流接觸器在閉合導通狀態下觸頭接觸電阻小、導通壓降小的優點，將由反并聯晶閘管和控制模塊單元共同組成的無觸點開關并聯在傳統直流接觸器觸頭上。這種無觸點的電力電子開關分斷電路時不產生電弧，這就避免了傳統接觸器中電弧對觸頭材料的電磨損，也就大大增加了觸頭的使用壽命和可靠性。 [1]
直流接觸器永磁機構
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