家用低壓綜合開關柜空(kong)開(kai)(kai)(kai)(kai)(kai)之(zhi)前家(jia)用(yong)的(de)(de)(de)熔斷絲當時早已(yi)被積空(kong)氣(qi)斷路器（也稱空(kong)氣(qi)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)開(kai)(kai)(kai)(kai)(kai)關(guan)，通稱空(kong)開(kai)(kai)(kai)(kai)(kai)）所替(ti)代，空(kong)開(kai)(kai)(kai)(kai)(kai)某(mou)些裝在入戶口(kou)處(chu)的(de)(de)(de)低(di)(di)壓(ya)(ya)綜(zong)(zong)合(he)開(kai)(kai)(kai)(kai)(kai)關(guan)柜(ju)里(li)，當路線(xian)(xian)或(huo)家(jia)用(yong)造成短路故(gu)障(zhang)或(huo)負(fu)載時，能積跳電(dian)(dian)(dian)(dian)(dian)(dian)(dian)斷開(kai)(kai)(kai)(kai)(kai)開(kai)(kai)(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，具有(you)維護電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路及功效。家(jia)用(yong)的(de)(de)(de)空(kong)開(kai)(kai)(kai)(kai)(kai)有(you)單、雙(shuang)(shuang)（三(san)開(kai)(kai)(kai)(kai)(kai)、多開(kai)(kai)(kai)(kai)(kai)）之(zhi)分，單在低(di)(di)壓(ya)(ya)綜(zong)(zong)合(he)開(kai)(kai)(kai)(kai)(kai)關(guan)柜(ju)里(li)占一(yi)路，雙(shuang)(shuang)在低(di)(di)壓(ya)(ya)綜(zong)(zong)合(he)開(kai)(kai)(kai)(kai)(kai)關(guan)柜(ju)里(li)占雙(shuang)(shuang)路。某(mou)些而言電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)總(zong)開(kai)(kai)(kai)(kai)(kai)關(guan)也就是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)閘開(kai)(kai)(kai)(kai)(kai)關(guan)利(li)用(yong)雙(shuang)(shuang)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)開(kai)(kai)(kai)(kai)(kai)關(guan)另(ling)外掌權火、零(ling)線(xian)(xian)，其他的(de)(de)(de)分開(kai)(kai)(kai)(kai)(kai)空(kong)開(kai)(kai)(kai)(kai)(kai)基本上(shang)利(li)用(yong)單，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)開(kai)(kai)(kai)(kai)(kai)關(guan)接(jie)在火線(xian)(xian)零(ling)線(xian)(xian)上(shang)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)開(kai)(kai)(kai)(kai)(kai)關(guan)的(de)(de)(de)兩方(fang)面全是(shi)火線(xian)(xian)零(ling)線(xian)(xian)，零(ling)線(xian)(xian)接(jie)端子排(pai)，不(bu)歷經(jing)空(kong)開(kai)(kai)(kai)(kai)(kai)。空(kong)開(kai)(kai)(kai)(kai)(kai)只有(you)具有(you)維護負(fu)載功效，但不(bu)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)維護作用(yong)，如(ru)需要(yao)可(ke)改裝漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)維護器，單空(kong)開(kai)(kai)(kai)(kai)(kai)加(jia)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)維護漏在低(di)(di)壓(ya)(ya)綜(zong)(zong)合(he)開(kai)(kai)(kai)(kai)(kai)關(guan)柜(ju)里(li)占雙(shuang)(shuang)路。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)維護器僅有(you)在無電(dian)(dian)(dian)(dian)(dian)(dian)(dian)人(ren)以(yi)前跳電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，才能真實維護人(ren)身險，因此 跟優良(liang)接(jie)地裝置的(de)(de)(de)接(jie)地線(xian)(xian)緊密結合(he)，帶漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)維護器的(de)(de)(de)空(kong)開(kai)(kai)(kai)(kai)(kai)要(yao)常(chang)常(chang)查驗(yan)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)維護器是(shi)不(bu)是(shi)合(he)理，某(mou)些每月(yue)按一(yi)下上(shang)邊的(de)(de)(de)檢(jian)驗(yan)鈕，若(ruo)能立刻斷開(kai)(kai)(kai)(kai)(kai)便(bian)是(shi)合(he)理，不(bu)然(ran)要(yao)替(ti)換。

恰當選(xuan)擇(ze)短路容量電(dian)(dian)流量尺(chi)寸很重要，要留心空開允差值(zhi)在于日后的(de)利(li)用量跟電(dian)(dian)纜(lan)線(xian)的(de)尺(chi)寸，既不可以過(guo)大(da)，也不可以過(guo)小，空開的(de)額定(ding)電(dian)(dian)壓倘若選(xuan)擇(ze)的(de)偏小，則(ze)易(yi)經(jing)常跳電(dian)(dian)，造成多余的(de)斷電(dian)(dian)，如選(xuan)擇(ze)過(guo)大(da)則(ze)達不上預估的(de)維護不良影(ying)響。

家(jia)居(ju)裝修利用(yong)的(de)空氣漏電開關普遍規格型號有C10、C15、C20、C25、C32等，某些設備6000W速(su)熱家(jia)用(yong)熱水(shui)器(qi)用(yong)C32，設備7000W-8500W家(jia)用(yong)熱水(shui)器(qi)要(yao)用(yong)更高的(de)的(de)空氣漏電開關，也(ye)要(yao)走(zou)獨立的(de)控制回路，因(yin)此 某些老房間不(bu)能用(yong)功(gong)率(lv)大的(de)速(su)熱家(jia)用(yong)熱水(shui)器(qi)。