繼(ji)電(dian)(dian)器廣泛(fan)應(ying)用于(yu)遙(yao)控(kong)、遙(yao)測、通訊、自動(dong)控(kong)制、機電(dian)(dian)一(yi)體(ti)化(hua)及電(dian)(dian)力電(dian)(dian)子設備中,是最重要的控(kong)制元件之(zhi)一(yi)。選購繼(ji)電(dian)(dian)器時,應(ying)該考慮(lv)接(jie)點(dian)類型(xing)及接(jie)點(dian)負(fu)荷、額定電(dian)(dian)流、體(ti)積大小、線圈電(dian)(dian)源(yuan)電(dian)(dian)壓等要素。