牽引電磁(ci)鐵可(ke)以被理解為主(zhu)要(yao)用來(lai)牽引機械裝(zhuang)置、開(kai)啟或者關閉各種閥門(men)，以執行自動控制任務(wu)。

常見的(de)(de)牽引電(dian)(dian)磁鐵(tie)的(de)(de)鐵(tie)芯都是軟(ruan)磁性材(cai)料而(er)制(zhi)，它的(de)(de)作用顯(xian)而(er)易見，如對電(dian)(dian)動機進行(xing)制(zhi)動以(yi)達(da)到準(zhun)確(que)停車的(de)(de)目的(de)(de)叫(jiao)制(zhi)動電(dian)(dian)磁鐵(tie);

電(dian)(dian)(dian)(dian)磁(ci)繼電(dian)(dian)(dian)(dian)器(qi)和接觸器(qi)的(de)電(dian)(dian)(dian)(dian)磁(ci)系(xi)統、自動開關的(de)電(dian)(dian)(dian)(dian)磁(ci)脫扣器(qi)及操作的(de)被稱為(wei)自動電(dian)(dian)(dian)(dian)器(qi)電(dian)(dian)(dian)(dian)磁(ci)控制系(xi)統電(dian)(dian)(dian)(dian)磁(ci)鐵(tie)，還(huan)有一類用(yong)于起(qi)重裝置來吊運鋼(gang)錠(ding)、鋼(gang)材、鐵(tie)砂等鐵(tie)磁(ci)性材料的(de)被分為(wei)起(qi)重電(dian)(dian)(dian)(dian)磁(ci)鐵(tie)。