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AFDD-32 型電(dian)(dian)(dian)弧(hu)(hu)(hu)(hu)故(gu)(gu)(gu)障(zhang)保護電(dian)(dian)(dian)器(qi)（以下(xia)(xia)簡稱“保護器(qi)”）由小型斷(duan)路(lu)(lu)(lu)器(qi)、脫扣(kou)結構、電(dian)(dian)(dian)弧(hu)(hu)(hu)(hu)檢(jian)測模塊組成，具有短路(lu)(lu)(lu)保護、過載保護和(he)電(dian)(dian)(dian)弧(hu)(hu)(hu)(hu)故(gu)(gu)(gu)障(zhang)保護的(de)功(gong)能，用于額定電(dian)(dian)(dian)流 32A 及(ji)以下(xia)(xia)的(de)交流電(dian)(dian)(dian)路(lu)(lu)(lu)中。線路(lu)(lu)(lu)絕緣(yuan)層(ceng)老化(hua)、破損及(ji)空氣潮(chao)濕都容易產生故(gu)(gu)(gu)障(zhang)電(dian)(dian)(dian)弧(hu)(hu)(hu)(hu)現象，保護器(qi)中的(de)電(dian)(dian)(dian)弧(hu)(hu)(hu)(hu)故(gu)(gu)(gu)障(zhang)保護單元能檢(jian)測和(he)辨別到線路(lu)(lu)(lu)中的(de)串聯(lian)(lian)電(dian)(dian)(dian)弧(hu)(hu)(hu)(hu)故(gu)(gu)(gu)障(zhang)、并(bing)聯(lian)(lian)電(dian)(dian)(dian)弧(hu)(hu)(hu)(hu)故(gu)(gu)(gu)障(zhang)及(ji)接地電(dian)(dian)(dian)弧(hu)(hu)(hu)(hu)故(gu)(gu)(gu)障(zhang)。當(dang)檢(jian)測到線路(lu)(lu)(lu)中存在故(gu)(gu)(gu)障(zhang)電(dian)(dian)(dian)弧(hu)(hu)(hu)(hu)時會自(zi)動脫扣(kou)，切斷(duan)電(dian)(dian)(dian)源，從(cong)而(er)預防電(dian)(dian)(dian)氣火災的(de)發生