一、半(ban)自動(dong)電動(dong)起(qi)子

在達到設(she)定扭(niu)力后不會自(zi)(zi)(zi)(zi)動剎(cha)車(che)停止的起(qi)子，稱之為半(ban)自(zi)(zi)(zi)(zi)動電(dian)動起(qi)子。通(tong)常半(ban)自(zi)(zi)(zi)(zi)動設(she)計(ji)為手按(an)式(shi)。半(ban)自(zi)(zi)(zi)(zi)動有分AC高壓直(zhi)插式(shi)，與經過電(dian)源(yuan)變壓為DC低壓式(shi)。

二、全自動(dong)電動(dong)起子(zi)

在達(da)到設定(ding)扭力后(hou)能夠完全自動(dong)(dong)剎車(che)并(bing)停止運轉的電(dian)動(dong)(dong)起(qi)子(zi)稱為全自動(dong)(dong)電(dian)動(dong)(dong)起(qi)子(zi)。全自動(dong)(dong)電(dian)動(dong)(dong)起(qi)子(zi)又分為AC高壓(ya)和DC低壓(ya)兩個(ge)系列，根據(ju)操作啟動(dong)(dong)模式的不同(tong)又分為手(shou)按(an)式和下壓(ya)式兩種。

高壓(ya)(ya)(ya)系(xi)(xi)列電(dian)(dian)動(dong)(dong)(dong)(dong)起(qi)(qi)子(zi)不(bu)需(xu)要單獨(du)電(dian)(dian)源供應器轉換電(dian)(dian)壓(ya)(ya)(ya)，直(zhi)接與市電(dian)(dian)連接，操作(zuo)快(kuai)捷占用(yong)空間(jian)小。低壓(ya)(ya)(ya)系(xi)(xi)列電(dian)(dian)動(dong)(dong)(dong)(dong)起(qi)(qi)子(zi)體積小重量(liang)輕，由直(zhi)流馬達(da)驅(qu)動(dong)(dong)(dong)(dong)，壽(shou)命長安(an)全系(xi)(xi)數高。手按(an)式(shi)電(dian)(dian)動(dong)(dong)(dong)(dong)起(qi)(qi)子(zi)操作(zuo)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)時只需(xu)用(yong)手指按(an)住啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)杠(gang)桿，或壓(ya)(ya)(ya)板(ban)按(an)鈕等。下壓(ya)(ya)(ya)式(shi)電(dian)(dian)動(dong)(dong)(dong)(dong)起(qi)(qi)子(zi)操作(zuo)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)時無需(xu)用(yong)手指按(an)住啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)杠(gang)桿，或壓(ya)(ya)(ya)板(ban)按(an)鈕等，直(zhi)接對準工件壓(ya)(ya)(ya)下就可啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)。