一、半自動電動起子

在達(da)到設定扭力后不會自(zi)動剎車停止(zhi)的(de)起子(zi)，稱(cheng)之為(wei)(wei)半自(zi)動電動起子(zi)。通常半自(zi)動設計為(wei)(wei)手按式(shi)。半自(zi)動有分AC高壓直插式(shi)，與(yu)經(jing)過電源變壓為(wei)(wei)DC低壓式(shi)。

二、全自動電動起子(zi)

在達(da)到(dao)設定扭力后能夠完(wan)全自(zi)(zi)動(dong)剎車并停止運(yun)轉的電(dian)(dian)動(dong)起子稱為全自(zi)(zi)動(dong)電(dian)(dian)動(dong)起子。全自(zi)(zi)動(dong)電(dian)(dian)動(dong)起子又分為AC高壓和(he)(he)DC低壓兩(liang)(liang)個系列，根據(ju)操(cao)作啟動(dong)模式的不同又分為手按式和(he)(he)下(xia)壓式兩(liang)(liang)種(zhong)。

高(gao)壓(ya)系列電(dian)(dian)(dian)動(dong)(dong)起子(zi)(zi)不需要單獨電(dian)(dian)(dian)源(yuan)供應器(qi)轉換電(dian)(dian)(dian)壓(ya)，直(zhi)(zhi)接(jie)與(yu)市電(dian)(dian)(dian)連接(jie)，操(cao)作快(kuai)捷占用空間小。低壓(ya)系列電(dian)(dian)(dian)動(dong)(dong)起子(zi)(zi)體積(ji)小重量輕，由直(zhi)(zhi)流(liu)馬達驅(qu)動(dong)(dong)，壽命長安全系數高(gao)。手(shou)(shou)按(an)(an)式電(dian)(dian)(dian)動(dong)(dong)起子(zi)(zi)操(cao)作啟(qi)(qi)(qi)動(dong)(dong)時只需用手(shou)(shou)指按(an)(an)住啟(qi)(qi)(qi)動(dong)(dong)杠(gang)桿，或(huo)壓(ya)板按(an)(an)鈕(niu)等。下(xia)壓(ya)式電(dian)(dian)(dian)動(dong)(dong)起子(zi)(zi)操(cao)作啟(qi)(qi)(qi)動(dong)(dong)時無(wu)需用手(shou)(shou)指按(an)(an)住啟(qi)(qi)(qi)動(dong)(dong)杠(gang)桿，或(huo)壓(ya)板按(an)(an)鈕(niu)等，直(zhi)(zhi)接(jie)對準(zhun)工件壓(ya)下(xia)就(jiu)可啟(qi)(qi)(qi)動(dong)(dong)。