大連配電箱(也稱為配(pei)(pei)電(dian)(dian)板、配(pei)(pei)電(dian)(dian)板或(huo)配(pei)(pei)電(dian)(dian)板)是電(dian)(dian)力(li)供應系統的一(yi)(yi)個(ge)組成部分，它將(jiang)電(dian)(dian)力(li)饋線(xian)分為輔助電(dian)(dian)路，同時在一(yi)(yi)個(ge)共同的外殼中(zhong)為每個(ge)電(dian)(dian)路提供保護(hu)熔斷(duan)器(qi)或(huo)斷(duan)路器(qi)。通常，一(yi)(yi)個(ge)主開關(guan)，以(yi)及在最近的板，一(yi)(yi)個(ge)或(huo)多(duo)個(ge)電(dian)(dian)阻電(dian)(dian)流器(qi)件(jian)(RCD)或(huo)剩余電(dian)(dian)流斷(duan)路器(qi)與過流保護(hu)(RCBO)，也被(bei)納入(ru)。

    大連配電箱母(mu)線(xian)將電流從輸(shu)入線(xian)(熱)導體輸(shu)送到(dao)斷(duan)(duan)路(lu)器(qi)(qi)，斷(duan)(duan)路(lu)器(qi)(qi)通過螺(luo)(luo)栓連接(jie)(使(shi)用(yong)(yong)螺(luo)(luo)紋螺(luo)(luo)釘)或(huo)插件(jian)連接(jie)(使(shi)用(yong)(yong)固定(ding)夾)固定(ding)在母(mu)線(xian)上。面(mian)板(ban)在商(shang)業和工(gong)業應用(yong)(yong)中(zhong)(zhong)更為(wei)常見，并使(shi)用(yong)(yong)螺(luo)(luo)栓斷(duan)(duan)路(lu)器(qi)(qi)。住宅和輕型(xing)商(shang)用(yong)(yong)板(ban)通常稱為(wei)負(fu)荷中(zhong)(zhong)心，并采用(yong)(yong)插入式斷(duan)(duan)路(lu)器(qi)(qi)。這些中(zhong)(zhong)性導體用(yong)(yong)螺(luo)(luo)桿端(duan)子固定(ding)在中(zhong)(zhong)性母(mu)線(xian)上。分支電路(lu)連接(jie)導線(xian)被固定(ding)在直(zhi)接(jie)連接(jie)到(dao)面(mian)板(ban)外殼(ke)的接(jie)線(xian)盒上，接(jie)線(xian)盒本身接(jie)地。

    在大(da)(da)連配(pei)電(dian)(dian)箱(xiang)的維(wei)修過程中(zhong)，當(dang)配(pei)電(dian)(dian)箱(xiang)蓋被拆卸下(xia)來，電(dian)(dian)纜可見時(shi)，美國配(pei)電(dian)(dian)箱(xiang)通常會有一些帶電(dian)(dian)部件暴露在外。在加拿(na)大(da)(da)的服務(wu)進口板(ban)中(zhong)，主(zhu)(zhu)開關(guan)(guan)或(huo)(huo)斷(duan)路器位于一個(ge)服務(wu)盒(he)中(zhong)，即與(yu)面板(ban)其余部分(fen)(fen)分(fen)(fen)離的外殼的一部分(fen)(fen)，這樣當(dang)主(zhu)(zhu)開關(guan)(guan)或(huo)(huo)斷(duan)路器被關(guan)(guan)閉時(shi)，在維(wei)修分(fen)(fen)支電(dian)(dian)路時(shi)，就不會暴露帶電(dian)(dian)部件。