交流低壓(ya)配電(dian)柜的工作原理是將高壓(ya)電(dian)能經(jing)過(guo)電(dian)力(li)變壓(ya)器(qi)變成適合工業用(yong)電(dian)的低壓(ya)電(dian)能,并利(li)用(yong)各種電(dian)器(qi)元件把電(dian)能分配到各個電(dian)氣(qi)設(she)備中。當電(dian)氣(qi)設(she)備發生異常時,例如電(dian)流過(guo)大(da),配電(dian)柜中的相應保護系統將啟動,及時地將故(gu)障電(dian)路切斷,從(cong)而保護電(dian)氣(qi)設(she)備和工人(ren)的安全。