溫(wen)度(du)(du)保(bao)險(xian)(xian)(xian)絲(si)，又(you)稱熱(re)(re)(re)熔斷器(qi)，是一(yi)種新(xin)型(xing)的(de)(de)電(dian)(dian)(dian)(dian)(dian)氣過熱(re)(re)(re)保(bao)護元件。該元件通(tong)常(chang)安裝在(zai)易加熱(re)(re)(re)的(de)(de)電(dian)(dian)(dian)(dian)(dian)器(qi)中。一(yi)旦電(dian)(dian)(dian)(dian)(dian)器(qi)發生(sheng)故(gu)(gu)障和加熱(re)(re)(re)，當溫(wen)度(du)(du)超(chao)過異常(chang)溫(wen)度(du)(du)時(shi)(shi)，溫(wen)度(du)(du)保(bao)險(xian)(xian)(xian)絲(si)會(hui)自(zi)動斷路器(qi)，切斷電(dian)(dian)(dian)(dian)(dian)源，防止電(dian)(dian)(dian)(dian)(dian)器(qi)發生(sheng)火災。近年來，我(wo)國大部分(fen)以(yi)發熱(re)(re)(re)為主要功能的(de)(de)家用電(dian)(dian)(dian)(dian)(dian)器(qi)產品(pin)，如(ru)電(dian)(dian)(dian)(dian)(dian)飯煲、電(dian)(dian)(dian)(dian)(dian)桶、電(dian)(dian)(dian)(dian)(dian)爐等，都(dou)安裝了(le)溫(wen)度(du)(du)保(bao)險(xian)(xian)(xian)絲(si)，但當零件內部故(gu)(gu)障時(shi)(shi)，溫(wen)度(du)(du)保(bao)險(xian)(xian)(xian)絲(si)可以(yi)及(ji)時(shi)(shi)切斷電(dian)(dian)(dian)(dian)(dian)源，防止電(dian)(dian)(dian)(dian)(dian)器(qi)進一(yi)步損壞，并結束由此引(yin)起的(de)(de)火災。溫(wen)度(du)(du)保(bao)險(xian)(xian)(xian)絲(si)和我(wo)們熟(shu)悉的(de)(de)保(bao)險(xian)(xian)(xian)絲(si)一(yi)樣(yang)，通(tong)常(chang)只(zhi)作(zuo)為電(dian)(dian)(dian)(dian)(dian)路上的(de)(de)電(dian)(dian)(dian)(dian)(dian)源通(tong)道，如(ru)果不(bu)超(chao)過額定值，就不(bu)會(hui)斷路，也不(bu)會(hui)對電(dian)(dian)(dian)(dian)(dian)路產生(sheng)任何(he)影(ying)響。只(zhi)有(you)當電(dian)(dian)(dian)(dian)(dian)氣故(gu)(gu)障產生(sheng)異常(chang)溫(wen)度(du)(du)時(shi)(shi)，才會(hui)斷路。

　　這一(yi)點和保險絲(si)熔斷(duan)器(qi)是不同的(de)，保險絲(si)熔斷(duan)器(qi)是因電路中超過(guo)額定(ding)電流時產生的(de)熱量(liang)而熔斷(duan)的(de)。

　　溫(wen)度(du)保(bao)(bao)(bao)險絲具(ju)有保(bao)(bao)(bao)險絲溫(wen)度(du)準確(que)、耐(nai)電(dian)壓高、體積小、成本低的特點。在溫(wen)度(du)保(bao)(bao)(bao)險絲外殼上標記額定溫(wen)度(du)值和額定電(dian)流值，不(bu)難識別，使用方便(bian)。可廣泛(fan)應用于(yu)(yu)電(dian)氣設(she)備、電(dian)熱設(she)備、實用電(dian)器等場合，用于(yu)(yu)過熱保(bao)(bao)(bao)護。

　　溫度保險絲主要有以下(xia)參數：

　　①額(e)定溫(wen)(wen)(wen)度(du)：有時又(you)稱動作(zuo)溫(wen)(wen)(wen)度(du)或(huo)熔斷(duan)溫(wen)(wen)(wen)度(du)，是指在無負荷(he)的情況下(xia)，將溫(wen)(wen)(wen)度(du)以每(mei)分鐘(zhong)1℃的速(su)度(du)上升(sheng)至(zhi)熔斷(duan)時的溫(wen)(wen)(wen)度(du)。

　　②熔斷精度：是指溫度保險絲實際(ji)熔斷(duan)溫度與額定溫度的差(cha)值。

　　③額定電流和(he)額定電壓：一般(ban)溫(wen)度保險絲標稱的電流和(he)電壓有(you)一定的余量(liang)，通常為5A和(he)250V。

　　溫(wen)(wen)(wen)度(du)保(bao)(bao)(bao)險(xian)(xian)絲(si)是一(yi)次(ci)性(xing)使(shi)(shi)(shi)用的(de)(de)(de)(de)保(bao)(bao)(bao)護元件(jian)。其(qi)使(shi)(shi)(shi)用效(xiao)果不(bu)僅取決于元件(jian)本(ben)身的(de)(de)(de)(de)性(xing)能，還取決于如何正確選擇和安裝(zhuang)溫(wen)(wen)(wen)度(du)保(bao)(bao)(bao)險(xian)(xian)絲(si)。溫(wen)(wen)(wen)度(du)保(bao)(bao)(bao)險(xian)(xian)絲(si)一(yi)般(ban)串聯在電(dian)(dian)(dian)路中，因此(ci)在選擇溫(wen)(wen)(wen)度(du)保(bao)(bao)(bao)險(xian)(xian)絲(si)時，必須使(shi)(shi)(shi)其(qi)額定電(dian)(dian)(dian)流(liu)值(zhi)大于電(dian)(dian)(dian)路中的(de)(de)(de)(de)使(shi)(shi)(shi)用電(dian)(dian)(dian)流(liu)，絕(jue)不(bu)允許(xu)通過溫(wen)(wen)(wen)度(du)保(bao)(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)超(chao)過規定的(de)(de)(de)(de)額定電(dian)(dian)(dian)流(liu)值(zhi)。在選擇溫(wen)(wen)(wen)度(du)保(bao)(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)(de)額定溫(wen)(wen)(wen)度(du)之前，必須了解和實際(ji)測量需(xu)要保(bao)(bao)(bao)護的(de)(de)(de)(de)溫(wen)(wen)(wen)度(du)與安裝(zhuang)植(zhi)入(ru)保(bao)(bao)(bao)險(xian)(xian)絲(si)位置(zhi)的(de)(de)(de)(de)溫(wen)(wen)(wen)差。此(ci)外，保(bao)(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)(de)額定溫(wen)(wen)(wen)度(du)也與保(bao)(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)(de)額定溫(wen)(wen)(wen)度(du)密切相(xiang)關(guan)。