1、按結構分

可分為框架(jia)(jia)式(shi)(shi)和(he)塑料(liao)(liao)外(wai)(wai)殼(ke)(ke)(ke)式(shi)(shi)兩種。框架(jia)(jia)式(shi)(shi)斷路(lu)(lu)(lu)器(qi)(qi)(qi)所有(you)結構(gou)元(yuan)件都裝在同一(yi)框架(jia)(jia)或底(di)板(ban)上，可有(you)較(jiao)多(duo)結構(gou)變化方式(shi)(shi)和(he)較(jiao)多(duo)類(lei)型脫(tuo)扣器(qi)(qi)(qi)，一(yi)般大容量斷路(lu)(lu)(lu)器(qi)(qi)(qi)多(duo)采用框架(jia)(jia)式(shi)(shi)結構(gou)。塑料(liao)(liao)外(wai)(wai)殼(ke)(ke)(ke)式(shi)(shi)斷路(lu)(lu)(lu)器(qi)(qi)(qi)所有(you)結構(gou)元(yuan)件都裝在一(yi)個塑料(liao)(liao)外(wai)(wai)殼(ke)(ke)(ke)內，結構(gou)緊(jin)湊、體積(ji)小(xiao)，一(yi)般小(xiao)容量斷路(lu)(lu)(lu)器(qi)(qi)(qi)多(duo)采用塑料(liao)(liao)外(wai)(wai)殼(ke)(ke)(ke)式(shi)(shi)結構(gou)。

2、按用途分

①導(dao)線保護用(yong)斷路(lu)器(qi)。主要用(yong)于照明(ming)線路(lu)和(he)保護家用(yong)電器(qi)，額定電流在6～125安(an)范圍內。

②配電(dian)用斷路器。在低壓配電(dian)系統中作(zuo)過載(zai)、短(duan)路、欠電(dian)壓保護之用，也可用作(zuo)電(dian)路的不(bu)頻繁操作(zuo)，額定電(dian)流一般為200～4000安(an)。

③電動機(ji)保(bao)護(hu)用(yong)斷路(lu)器。在不頻繁(fan)操(cao)作場合，用(yong)于操(cao)作和保(bao)護(hu)電動機(ji)，額定電流一般為6～63安。

④漏電保護斷路(lu)器。主要(yao)用于(yu)防止漏電，保護人身安(an)全，額定電流多在(zai)63安(an)以下。

3、按性能分

分為(wei)(wei)普通(tong)(tong)式(shi)和(he)限(xian)(xian)流(liu)式(shi)兩種。限(xian)(xian)流(liu)式(shi)斷(duan)(duan)(duan)路(lu)(lu)器(qi)一般具(ju)有特殊結構的(de)觸頭系統，當短(duan)(duan)路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)通(tong)(tong)過時，觸頭在(zai)電(dian)(dian)(dian)(dian)(dian)動(dong)力作用(yong)下斥開而(er)提前呈現電(dian)(dian)(dian)(dian)(dian)弧，利用(yong)電(dian)(dian)(dian)(dian)(dian)弧電(dian)(dian)(dian)(dian)(dian)阻來限(xian)(xian)制短(duan)(duan)路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)增長(chang)。限(xian)(xian)流(liu)式(shi)斷(duan)(duan)(duan)路(lu)(lu)器(qi)比(bi)普通(tong)(tong)斷(duan)(duan)(duan)路(lu)(lu)器(qi)有較大的(de)開斷(duan)(duan)(duan)能(neng)力，并能(neng)限(xian)(xian)制短(duan)(duan)路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)對(dui)被保(bao)護線路(lu)(lu)的(de)電(dian)(dian)(dian)(dian)(dian)動(dong)力和(he)熱效應的(de)作用(yong)。低壓斷(duan)(duan)(duan)路(lu)(lu)器(qi)有較強(qiang)的(de)分斷(duan)(duan)(duan)和(he)接通(tong)(tong)短(duan)(duan)路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)能(neng)力，額定電(dian)(dian)(dian)(dian)(dian)流(liu)為(wei)(wei)100安的(de)塑料(liao)外(wai)殼式(shi)斷(duan)(duan)(duan)路(lu)(lu)器(qi)，短(duan)(duan)路(lu)(lu)通(tong)(tong)斷(duan)(duan)(duan)能(neng)力約為(wei)(wei)12千(qian)安，而(er)限(xian)(xian)流(liu)式(shi)斷(duan)(duan)(duan)路(lu)(lu)器(qi)則可達30千(qian)安。