當(dang)接觸(chu)(chu)器線(xian)圈通電(dian)(dian)后，線(xian)圈電(dian)(dian)流會產生(sheng)磁場(chang)(chang)，產生(sheng)的(de)磁場(chang)(chang)使(shi)靜鐵(tie)心(xin)產生(sheng)電(dian)(dian)磁吸(xi)力吸(xi)引動(dong)鐵(tie)心(xin)，并(bing)帶(dai)動(dong)交(jiao)流接觸(chu)(chu)器點(dian)(dian)動(dong)作(zuo)(zuo)(zuo)，常(chang)閉(bi)觸(chu)(chu)點(dian)(dian)斷(duan)(duan)開(kai)，常(chang)開(kai)觸(chu)(chu)點(dian)(dian)閉(bi)合，兩者(zhe)是聯動(dong)的(de)。當(dang)線(xian)圈斷(duan)(duan)電(dian)(dian)時，電(dian)(dian)磁吸(xi)力消失，銜鐵(tie)在釋(shi)放彈(dan)簧的(de)作(zuo)(zuo)(zuo)用下(xia)釋(shi)放，使(shi)觸(chu)(chu)點(dian)(dian)復原，常(chang)開(kai)觸(chu)(chu)點(dian)(dian)斷(duan)(duan)開(kai)，常(chang)閉(bi)觸(chu)(chu)點(dian)(dian)閉(bi)合。可(ke)(ke)快速切斷(duan)(duan)交(jiao)流與直(zhi)流主回路和(he)可(ke)(ke)頻(pin)繁(fan)地(di)接通與大電(dian)(dian)流控(kong)制(zhi)(zhi)(zhi)(zhi)（某些型別可(ke)(ke)達(da)800安(an)培）電(dian)(dian)路的(de)裝置(zhi)，所以經常(chang)運用于電(dian)(dian)動(dong)機(ji)(ji)(ji)做為控(kong)制(zhi)(zhi)(zhi)(zhi)對(dui)象﹐也可(ke)(ke)用作(zuo)(zuo)(zuo)控(kong)制(zhi)(zhi)(zhi)(zhi)工(gong)廠設備﹑電(dian)(dian)熱器﹑工(gong)作(zuo)(zuo)(zuo)母機(ji)(ji)(ji)和(he)各樣(yang)電(dian)(dian)力機(ji)(ji)(ji)組等電(dian)(dian)力負載，接觸(chu)(chu)器不(bu)僅(jin)能接通和(he)切斷(duan)(duan)電(dian)(dian)路，而且(qie)還(huan)具有低電(dian)(dian)壓釋(shi)放保護(hu)作(zuo)(zuo)(zuo)用。接觸(chu)(chu)器控(kong)制(zhi)(zhi)(zhi)(zhi)容(rong)量大，適用于頻(pin)繁(fan)操作(zuo)(zuo)(zuo)和(he)遠距(ju)離控(kong)制(zhi)(zhi)(zhi)(zhi)。是自動(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)系統中的(de)重要(yao)元件之(zhi)一。

美國BENEDIKT&JAGER成立于1929年，最初以修理電機和發電機小板和電阻起動器而起家，如今擁有上百名員工，是一個國際的低電壓控制齒輪制造商和供應商。產品包括接觸器、電機起動器、凸輪開關、按鈕以及各種特種開關項目。BENEDIKT&JAGER。BENEDIKT&JAGER的產品有無窮無盡的應用范圍，從電梯元器件和發電機到商業洗衣及包裝設備的應用程序。