由于大連配電箱的用電(dian)負(fu)荷主要是感性(xing)負(fu)載(zai)(zai).所以(yi),要求(qiu)電(dian)柜內斷路(lu)(lu)器(開關)的瞬時過載(zai)(zai)能(neng)(neng)力要強(qiang),滅弧性(xing)能(neng)(neng)要好,接通的可靠性(xing)要高。照明配電(dian)箱(xiang)是將(jiang)剩余(yu)電(dian)流(liu)動作保(bao)護(hu)器和空氣斷路(lu)(lu)器等(deng)在其內部合理組合裝(zhuang)配起來，從而實現對家庭電(dian)源集中 控(kong)制，以(yi)及接地、過載(zai)(zai)、短路(lu)(lu)等(deng)保(bao)護(hu)功能(neng)(neng)的基礎配電(dian)裝(zhuang)置。

    低壓(ya)(ya)大連配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)箱只是(shi)(shi)(shi)在配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)系統中相(xiang)(xiang)對高(gao)(gao)壓(ya)(ya)輸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)系統而(er)言,我國電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)標準是(shi)(shi)(shi)三相(xiang)(xiang)四線(xian)(xian)(xian)400V(供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya))單(dan)相(xiang)(xiang)是(shi)(shi)(shi)230V(供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)相(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)),用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)標準是(shi)(shi)(shi)：三相(xiang)(xiang)四線(xian)(xian)(xian)380V,單(dan)相(xiang)(xiang)用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)標準是(shi)(shi)(shi)：220V。供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)比用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)略高(gao)(gao),是(shi)(shi)(shi)考(kao)慮到低壓(ya)(ya)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)統線(xian)(xian)(xian)路的(de)損耗。

    大(da)連配(pei)電(dian)(dian)(dian)箱進線開(kai)關具有(you)過流及(ji)短路脫扣功(gong)能，可選配(pei)自動合(he)閘機構，或選用(yong)有(you)重合(he)閘功(gong)能的(de)(de)斷路器，實現(xian)遠(yuan)方遙控送電(dian)(dian)(dian)功(gong)能。饋電(dian)(dian)(dian)開(kai)關選用(yong)待剩(sheng)余(yu)電(dian)(dian)(dian)流保護功(gong)能的(de)(de)塑殼斷路器。