選擇電(dian)子類熔(rong)斷器較全面的考量需要注(zhu)意十大要素(su)：
1.額定電(dian)流
2.額定電(dian)壓
3.工(gong)作溫度(du)
4.電壓降 / 冷電阻(zu)
5.熔斷(duan)特(te)(te)性: 時間(jian)-電流特(te)(te)性和(he)過載能(neng)力
6.分斷能力
7.熔化(hua)熱能值(zhi)
8.耐久性（壽(shou)命）
9.結構特征：外形(xing)/ 尺寸和安裝形(xing)式
10.安全認證
小(xiao)型熔(rong)(rong)(rong)斷(duan)(duan)器(qi)從熔(rong)(rong)(rong)斷(duan)(duan)性(xing)(xing)能(neng)(neng)(neng)可(ke)分為兩(liang)大(da)類：快(kuai)熔(rong)(rong)(rong)斷(duan)(duan)和(he)慢(man)熔(rong)(rong)(rong)斷(duan)(duan)，一(yi)般來說，快(kuai)熔(rong)(rong)(rong)斷(duan)(duan)通常適用(yong)(yong)于沒有或很小(xiao)浪(lang)涌(yong)的(de)(de)阻性(xing)(xing)電(dian)(dian)(dian)路(lu)或敏(min)感器(qi)件的(de)(de)保(bao)(bao)護(hu)(hu)，慢(man)熔(rong)(rong)(rong)斷(duan)(duan)則(ze)常常適用(yong)(yong)于開關時(shi)(shi)(shi)有浪(lang)涌(yong)電(dian)(dian)(dian)流的(de)(de)容性(xing)(xing)或感性(xing)(xing)電(dian)(dian)(dian)路(lu)。熔(rong)(rong)(rong)斷(duan)(duan)特性(xing)(xing)主要(yao)(yao)考(kao)慮保(bao)(bao)護(hu)(hu)功能(neng)(neng)(neng)，熔(rong)(rong)(rong)斷(duan)(duan)器(qi)在(zai)(zai)電(dian)(dian)(dian)路(lu)出現故障過電(dian)(dian)(dian)流時(shi)(shi)(shi)能(neng)(neng)(neng)夠及(ji)時(shi)(shi)(shi)可(ke)靠切斷(duan)(duan)電(dian)(dian)(dian)流，這(zhe)就(jiu)(jiu)要(yao)(yao)求熔(rong)(rong)(rong)斷(duan)(duan)器(qi)的(de)(de)動(dong)作速度(du)快(kuai)一(yi)點；而熔(rong)(rong)(rong)化熱能(neng)(neng)(neng)值(zhi)主要(yao)(yao)考(kao)慮承載(zai)功能(neng)(neng)(neng)，熔(rong)(rong)(rong)斷(duan)(duan)器(qi)在(zai)(zai)電(dian)(dian)(dian)路(lu)開關瞬間出現非故障脈沖電(dian)(dian)(dian)流時(shi)(shi)(shi)能(neng)(neng)(neng)夠承受(shou)，并在(zai)(zai)整(zheng)機使(shi)用(yong)(yong)壽命中都(dou)能(neng)(neng)(neng)承受(shou)，這(zhe)就(jiu)(jiu)要(yao)(yao)求熔(rong)(rong)(rong)斷(duan)(duan)器(qi)的(de)(de)反應速度(du)適當慢(man)一(yi)點；因此這(zhe)兩(liang)個方面(mian)往往是互相有沖突或有制約的(de)(de)，需要(yao)(yao)進行(xing)綜合平衡，使(shi)得所選擇(ze)的(de)(de)熔(rong)(rong)(rong)斷(duan)(duan)器(qi)既能(neng)(neng)(neng)保(bao)(bao)證電(dian)(dian)(dian)子(zi)產品在(zai)(zai)使(shi)用(yong)(yong)中的(de)(de)順(shun)利開關，又能(neng)(neng)(neng)保(bao)(bao)證有足夠的(de)(de)保(bao)(bao)護(hu)(hu)功能(neng)(neng)(neng)，及(ji)時(shi)(shi)(shi)有效(xiao)地保(bao)(bao)護(hu)(hu)電(dian)(dian)(dian)器(qi)和(he)人身(shen)的(de)(de)安全(quan)(quan)；真正做到(dao)所選用(yong)(yong)的(de)(de)熔(rong)(rong)(rong)斷(duan)(duan)器(qi)會在(zai)(zai)該(gai)斷(duan)(duan)的(de)(de)時(shi)(shi)(shi)侯安全(quan)(quan)地熔(rong)(rong)(rong)斷(duan)(duan),不(bu)(bu)該(gai)斷(duan)(duan)的(de)(de)時(shi)(shi)(shi)侯又不(bu)(bu)致誤動(dong)作。
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