XL-21 型(xing)低壓動(dong)力(li)配電(dian)柜(ju)適用(yong)(yong)于(yu)發電(dian)廠(chang)及工礦(kuang)企業、交流電(dian)壓 380V的三相四線、三相五線制系統，作動(dong)力(li)照明配電(dian)之用(yong)(yong)。XL-21 低壓動(dong)力(li)配電(dian)柜(ju)系戶內裝(zhuang)置，靠墻安裝(zhuang)、屏前檢(jian)(jian)修；也(ye)可根(gen)據客戶要求(qiu)，實現雙面布件、前后(hou)檢(jian)(jian)修。可選用(yong)(yong)不(bu)同(tong)型(xing)號(hao)、不(bu)同(tong)電(dian)流等級的斷路器，滿足不(bu)同(tong)客戶的需求(qiu)。