汽qi車che保bao險xian絲si座zuo在zai進jin行xing運yun用yong的de過guo程cheng中zhong，其qi保bao險xian絲si在zai必bi定ding程cheng度du上shang可ke以yi接jie受shou由you於yu其qi電dian源yuan或huo者zhe是shi其qi外wai部bu的de煩fan擾rao的de電dian流liu波bo動dong時shi必bi定ding規gui劃hua的de過guo載zai，轎jiao車che保bao險xian絲si座zuo中zhong電dian路lu中zhong呈cheng現xian比bi較jiao大da的de過guo載zai電dian流liu的de時shi，其qi保bao險xian絲si應ying該gai在zai固gu定ding的de時shi間jian內nei堵du截jie其qi過guo載zai電dian流liu。

汽(qi)車(che)保(bao)險(xian)絲(si)座(zuo)可(ke)以(yi)在(zai)必(bi)定(ding)程(cheng)度(du)上(shang)維(wei)護(hu)電(dian)路(lu)中(zhong)其(qi)他(ta)電(dian)子(zi)零(ling)部(bu)件(jian)的(de)安(an)全(quan)，當(dang)電(dian)路(lu)中(zhong)發(fa)生(sheng)其(qi)短(duan)路(lu)呈(cheng)現(xian)其(qi)很(hen)大(da)的(de)電(dian)流(liu)的(de)時(shi)分(fen)，其(qi)保(bao)險(xian)絲(si)可(ke)以(yi)安(an)全(quan)的(de)堵(du)截(jie)其(qi)電(dian)路(lu)，這(zhe)樣(yang)會(hui)使(shi)他(ta)們(men)免(mian)於(yu)由(you)於(yu)過(guo)電(dian)流(liu)造(zao)成(cheng)損(sun)壞(huai)。

汽(qi)車(che)保(bao)險(xian)絲(si)座(zuo)中(zhong)的(de)保(bao)險(xian)絲(si)可(ke)以(yi)運(yun)用(yong)在(zai)等(deng)於(yu)或(huo)者(zhe)是(shi)小(xiao)於(yu)其(qi)額(e)定(ding)電(dian)壓(ya)的(de)電(dian)壓(ya)下(xia)運(yun)用(yong)，可(ke)是(shi)一(yi)般(ban)不(bu)能(neng)運(yun)用(yong)在(zai)電(dian)路(lu)電(dian)壓(ya)大(da)於(yu)保(bao)險(xian)絲(si)額(e)定(ding)電(dian)壓(ya)的(de)電(dian)路(lu)中(zhong)，設(she)備(bei)的(de)中(zhong)的(de)電(dian)壓(ya)降(jiang)，對(dui)保(bao)險(xian)絲(si)在(zai)通(tong)額(e)定(ding)電(dian)流(liu)。

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