限(xian)位(wei)(wei)(wei)開關(guan)(guan)又稱行程(cheng)限(xian)位(wei)(wei)(wei)開關(guan)(guan)，用于控制機(ji)械設備(bei)的(de)(de)(de)行程(cheng)及限(xian)位(wei)(wei)(wei)保護。在實(shi)際生(sheng)產(chan)中(zhong)，將行程(cheng)限(xian)位(wei)(wei)(wei)開關(guan)(guan)安裝(zhuang)在預先安排的(de)(de)(de)位(wei)(wei)(wei)置(zhi)，當(dang)裝(zhuang)于生(sheng)產(chan)機(ji)械運動部件(jian)上的(de)(de)(de)模塊撞擊行程(cheng)開關(guan)(guan)時，行程(cheng)限(xian)位(wei)(wei)(wei)開關(guan)(guan)的(de)(de)(de)觸點動作，實(shi)現電路的(de)(de)(de)切換

限位開(kai)關就是用(yong)以限定機械設備(bei)的(de)(de)運動極限位置的(de)(de)電氣開(kai)關。這種開(kai)關有接觸式(shi)的(de)(de)和非接觸式(shi)的(de)(de)。

接觸式的(de)(de)(de)(de)(de)(de)比較直觀，機(ji)(ji)械(xie)設備的(de)(de)(de)(de)(de)(de)運(yun)動部件上(shang)(shang)，安(an)裝上(shang)(shang)限(xian)位(wei)開(kai)關(guan)(guan)，限(xian)位(wei)開(kai)關(guan)(guan)供應商，與其相對運(yun)動的(de)(de)(de)(de)(de)(de)固上(shang)(shang)安(an)裝極限(xian)位(wei)置的(de)(de)(de)(de)(de)(de)擋(dang)塊，或(huo)(huo)(huo)者是相反安(an)裝位(wei)置。當(dang)限(xian)位(wei)開(kai)關(guan)(guan)的(de)(de)(de)(de)(de)(de)機(ji)(ji)械(xie)觸頭碰上(shang)(shang)擋(dang)塊時，限(xian)位(wei)開(kai)關(guan)(guan)報價，切斷了(le)(或(huo)(huo)(huo)改變了(le))控(kong)制電(dian)路(lu)，機(ji)(ji)械(xie)就(jiu)停止運(yun)行(xing)(xing)或(huo)(huo)(huo)改變運(yun)行(xing)(xing)。由于機(ji)(ji)械(xie)的(de)(de)(de)(de)(de)(de)慣性運(yun)動，這種(zhong)行(xing)(xing)程開(kai)關(guan)(guan)有一定的(de)(de)(de)(de)(de)(de)“超行(xing)(xing)程”以保護開(kai)關(guan)(guan)不(bu)受損壞。

明泰(tai)電(dian)(dian)(dian)(dian)氣（蘇州）有限公(gong)(gong)司是(shi)正(zheng)泰(tai)集團(tuan)在(zai)蘇州地區一家(jia)授權的經(jing)銷企業，連續十年銷量居正(zheng)泰(tai)營銷網絡(luo)名(ming)，公(gong)(gong)司主要經(jing)營“正(zheng)泰(tai)”牌配電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)器、控(kong)制電(dian)(dian)(dian)(dian)器、終(zhong)端(duan)電(dian)(dian)(dian)(dian)器、電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)器、電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子、儀器儀表、建(jian)筑電(dian)(dian)(dian)(dian)器、高壓電(dian)(dian)(dian)(dian)器及成套設備。

簡單(dan)的腳(jiao)(jiao)踏(ta)開(kai)關(guan)其實就是內置一個行程(cheng)開(kai)關(guan)，當腳(jiao)(jiao)踏(ta)給予信號的時(shi)候，開(kai)關(guan)執行。但是在焊接領(ling)域(yu)腳(jiao)(jiao)踏(ta)開(kai)關(guan)的功(gong)能還擔當控(kong)制輸出電(dian)流大小的作(zuo)用。這種(zhong)類型(xing)的腳(jiao)(jiao)踏(ta)開(kai)關(guan)還可以分為兩類：一、機(ji)械式腳(jiao)(jiao)踏(ta)開(kai)關(guan)；二、感(gan)應(ying)(ying)式腳(jiao)(jiao)踏(ta)開(kai)關(guan)。機(ji)械式腳(jiao)(jiao)踏(ta)開(kai)關(guan)是傳統的齒(chi)輪齒(chi)條傳動，感(gan)應(ying)(ying)式是通過電(dian)磁感(gan)應(ying)(ying)等原理。

明泰(tai)電(dian)(dian)(dian)(dian)(dian)氣（蘇州(zhou)）有限公司是正(zheng)泰(tai)集團在蘇州(zhou)地(di)區一家授權(quan)的經銷(xiao)企業，連續十年銷(xiao)量居正(zheng)泰(tai)營銷(xiao)網絡(luo)名，公司主(zhu)要經營“正(zheng)泰(tai)”牌配(pei)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)器、控制電(dian)(dian)(dian)(dian)(dian)器、終端電(dian)(dian)(dian)(dian)(dian)器、電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)器、電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子(zi)、儀(yi)器儀(yi)表、建筑(zhu)電(dian)(dian)(dian)(dian)(dian)器、高壓電(dian)(dian)(dian)(dian)(dian)器及(ji)成套設備(bei)。

行程開關(guan)主要用(yong)于將機(ji)械(xie)位(wei)移轉變成電信(xin)號，使電動機(ji)的運行狀態得以(yi)改變，從而(er)控(kong)制機(ji)械(xie)動作或用(yong)作程序控(kong)制。

行程(cheng)開關真正的用武之地是在工業上，在那(nei)里(li)它(ta)(ta)與其它(ta)(ta)設備配合，組成更復(fu)雜的自動化(hua)設備。

機(ji)(ji)床上有很多這(zhe)樣(yang)的(de)(de)行程(cheng)開(kai)(kai)關(guan)，用它控制工(gong)件運動(dong)(dong)或自動(dong)(dong)進(jin)刀的(de)(de)行程(cheng)，避(bi)免發生碰撞事故。有時利用行程(cheng)開(kai)(kai)關(guan)使被控物體在(zai)規定的(de)(de)兩個(ge)位(wei)置之(zhi)間(jian)自動(dong)(dong)換向(xiang)，從(cong)而得到不(bu)斷的(de)(de)往復(fu)運動(dong)(dong)。比如自動(dong)(dong)運料的(de)(de)小(xiao)車(che)(che)到達(da)終點碰著行程(cheng)開(kai)(kai)關(guan)，限位(wei)開(kai)(kai)關(guan)廠家，接通了(le)翻車(che)(che)機(ji)(ji)構(gou)，無錫(xi)限位(wei)開(kai)(kai)關(guan)，就(jiu)(jiu)把車(che)(che)里的(de)(de)物料翻倒出來，并且退(tui)回到起(qi)點。到達(da)起(qi)點之(zhi)后又碰著起(qi)點的(de)(de)行程(cheng)開(kai)(kai)關(guan)，把裝(zhuang)料機(ji)(ji)構(gou)的(de)(de)電(dian)路(lu)接通，開(kai)(kai)始自動(dong)(dong)裝(zhuang)車(che)(che)。總是這(zhe)樣(yang)下去，就(jiu)(jiu)成了(le)一套自動(dong)(dong)生產線，用不(bu)著人(ren)管，日以(yi)繼夜地工(gong)作(zuo)，節省了(le)人(ren)的(de)(de)體力勞動(dong)(dong)。