繼電(dian)(dian)(dian)(dian)器廣泛(fan)應(ying)用于遙控、遙測、通(tong)訊、自動控制、機電(dian)(dian)(dian)(dian)一體(ti)化及電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子設備中,是最(zui)重要的控制元件之一。選(xuan)購繼電(dian)(dian)(dian)(dian)器時,應(ying)該考慮接(jie)點類型(xing)及接(jie)點負荷、額定電(dian)(dian)(dian)(dian)流、體(ti)積大小、線圈電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)壓等要素。