微動開關的種類繁多，內部結構有成百上千種，按體積分有普通型、小型、超小型；按防護性能分，有防水型、防塵型、防爆型；按分斷形式分，有單聯型、雙 聯型、多連型。還有一種強斷開微動開關（當開關的簧片不起作用的時候，外力也能使開關斷開）；按分斷能力分，有普通型、直流型、微電流型、大電流型。按使 用環境分，有普通型、耐高溫型（250℃）、超耐高溫陶瓷型（400℃）
微動開關一般以無輔助按壓附件為基本型式，并且派生出小行程式、大行程式。根據需要可加入不同輔助按壓輔件，根據加入的不同的按壓輔件開關可分為按鈕式、簧片滾輪式、杠桿滾輪式、短動臂式、長動臂式等各種形式。
微動開關在需頻繁換接電路的設備中進行自動控制及安全保護等，廣泛應用在電子設備、、礦山、、家用電器、電器設備，以及航天、航空、艦船、導彈、坦克等軍事領域，已經廣泛應用于以上領域，開關雖小，但起著不可替代的作用。
目前國內市面上的微動開關根據使用要求的不同，開關的機械壽命有3W次至1000W次不等，一般有10W、20W、50W、100W次、300W次、 500W次、800W次，國內一般使用鈹青銅、錫青銅、不銹鋼絲做簧片，國外的ALPS最高可以做到1000W次，他們的簧片是用稀有金屬做成的。國內的騰飛電子所生產的WK-01B最高也可以到達1000W次。
微動開關是一種施壓促動的快速開關，又叫靈敏開關。
其工(gong)作(zuo)(zuo)(zuo)原理(li)是：外機(ji)械力(li)通過傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)元(yuan)件(jian)（按(an)(an)銷(xiao)(xiao)、按(an)(an)鈕、杠桿、等(deng)）將(jiang)力(li)作(zuo)(zuo)(zuo)用(yong)于(yu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)上(shang)(shang)，并(bing)將(jiang)能量積聚到后(hou)，產(chan)生瞬時動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)，使(shi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)末端(duan)的(de)(de)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)觸(chu)點(dian)(dian)與定觸(chu)點(dian)(dian)快(kuai)速接(jie)通或斷開(kai)。當(dang)傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)元(yuan)件(jian)上(shang)(shang)的(de)(de)作(zuo)(zuo)(zuo)用(yong)力(li)移去后(hou)，動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)產(chan)生反向動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)力(li)，當(dang)傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)元(yuan)件(jian)反向行程達到簧片的(de)(de)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)后(hou)，瞬時完成(cheng)反向動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)。微(wei)(wei)(wei)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)開(kai)關(guan)(guan)的(de)(de)觸(chu)點(dian)(dian)間(jian)距小(xiao)、動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)行程短、按(an)(an)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)小(xiao)、通斷迅(xun)速。其動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)觸(chu)點(dian)(dian)的(de)(de)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)速度與傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)元(yuan)件(jian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)速度無關(guan)(guan)。微(wei)(wei)(wei)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)開(kai)關(guan)(guan)以按(an)(an)銷(xiao)(xiao)式(shi)(shi)為(wei)基本型(xing)，可(ke)(ke)派生按(an)(an)鈕短行程式(shi)(shi)、按(an)(an)鈕大(da)(da)行程式(shi)(shi)、按(an)(an)鈕特大(da)(da)行程式(shi)(shi)、按(an)(an)鈕式(shi)(shi)、簧片式(shi)(shi)、杠桿滾輪式(shi)(shi)、短動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)臂式(shi)(shi)、長動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)臂式(shi)(shi)等(deng)等(deng)。 微(wei)(wei)(wei)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)開(kai)關(guan)(guan)在及其他設備中(zhong)用(yong)于(yu)需(xu)(xu)頻繁換接(jie)電(dian)路的(de)(de)及安全保護等(deng)裝置中(zhong)。微(wei)(wei)(wei)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)開(kai)關(guan)(guan)分為(wei)大(da)(da)型(xing)、中(zhong)型(xing)、小(xiao)型(xing)，按(an)(an)不(bu)同的(de)(de)需(xu)(xu)要分有(you)可(ke)(ke)以有(you)防(fang)水型(xing)（放(fang)在液體環境中(zhong)使(shi)用(yong)）和普通型(xing)，開(kai)關(guan)(guan)連(lian)接(jie)兩個線路，為(wei)電(dian)器、機(ji)器等(deng)提供通斷電(dian)控制，廣泛應用(yong)在鼠標，，工(gong)業(ye)機(ji)械，摩托(tuo)車等(deng)地方，開(kai)關(guan)(guan)雖小(xiao)，但起著不(bu)可(ke)(ke)替代的(de)(de)作(zuo)(zuo)(zuo)用(yong)。