閉鎖繼(ji)(ji)電(dian)器(qi)(qi)(qi)(qi)具有獨(du)特的功能,可(ke)用(yong)于(yu)任何(he)基本繼(ji)(ji)電(dian)器(qi)(qi)(qi)(qi)形式,SPST、SPDT或DPDT。大(da)多數(shu)繼(ji)(ji)電(dian)器(qi)(qi)(qi)(qi)和接觸(chu)器(qi)(qi)(qi)(qi)都被認(ren)為是“故(gu)(gu)障安全(quan)型(xing)”。故(gu)(gu)障安全(quan)型(xing)繼(ji)(ji)電(dian)器(qi)(qi)(qi)(qi)需(xu)(xu)要(yao)持(chi)續施(shi)加(jia)線(xian)圈(quan)(quan)電(dian)源,以(yi)確保(bao)繼(ji)(ji)電(dian)器(qi)(qi)(qi)(qi)切(qie)換(huan)。一旦線(xian)圈(quan)(quan)電(dian)源斷開(kai),故(gu)(gu)障保(bao)護繼(ji)(ji)電(dian)器(qi)(qi)(qi)(qi)中的可(ke)移動(dong)(dong)觸(chu)點(dian)將返回到其默認(ren)位置(zhi)。閉鎖繼(ji)(ji)電(dian)器(qi)(qi)(qi)(qi)需(xu)(xu)要(yao)一個瞬時(shi)線(xian)圈(quan)(quan)脈(mo)沖來(lai)改變可(ke)移動(dong)(dong)觸(chu)點(dian)的位置(zhi)。不(bu)需(xu)(xu)要(yao)連續的線(xian)圈(quan)(quan)功率來(lai)保(bao)持(chi)繼(ji)(ji)電(dian)器(qi)(qi)(qi)(qi)處于(yu)特定的開(kai)關狀態。當應用(yong)電(dian)路需(xu)(xu)要(yao)切(qie)換(huan)閉鎖繼(ji)(ji)電(dian)器(qi)(qi)(qi)(qi)時(shi),它(ta)會向線(xian)圈(quan)(quan)發(fa)送脈(mo)沖以(yi)改變可(ke)移動(dong)(dong)觸(chu)點(dian)的位置(zhi)。