明(ming)泰(tai)電(dian)(dian)(dian)(dian)氣（蘇州）有限公司(si)是正(zheng)(zheng)泰(tai)集團在蘇州地區一家授權的經(jing)銷(xiao)(xiao)企業，連續十年銷(xiao)(xiao)量居正(zheng)(zheng)泰(tai)營銷(xiao)(xiao)網絡名，公司(si)主要經(jing)營“正(zheng)(zheng)泰(tai)”牌配電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)器(qi)(qi)、控制電(dian)(dian)(dian)(dian)器(qi)(qi)、終端(duan)電(dian)(dian)(dian)(dian)器(qi)(qi)、電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)器(qi)(qi)、電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子、儀(yi)器(qi)(qi)儀(yi)表(biao)、建(jian)筑電(dian)(dian)(dian)(dian)器(qi)(qi)、高壓電(dian)(dian)(dian)(dian)器(qi)(qi)及成套設備。

本產(chan)品(pin)適用(yong)(yong)于(yu)交流(liu)50/60Hz、690V及(ji)(ji)以下，額定(ding)電(dian)(dian)(dian)流(liu)自6A至1250A及(ji)(ji)以下的兩路(lu)電(dian)(dian)(dian)源(yuan)(常(chang)用(yong)(yong)電(dian)(dian)(dian)源(yuan)N和備(bei)用(yong)(yong)電(dian)(dian)(dian)源(yuan)或(huo)發電(dian)(dian)(dian)機(ji)電(dian)(dian)(dian)源(yuan)R)的供電(dian)(dian)(dian)系統(tong)中，因一路(lu)電(dian)(dian)(dian)源(yuan)發生故障(停(ting)電(dian)(dian)(dian)、欠壓、過(guo)壓、斷相、頻(pin)率(lv)偏移)而進行電(dian)(dian)(dian)源(yuan)之間的自動切換，以保證(zheng)供電(dian)(dian)(dian)的可靠性和安全(quan)性。廣泛應(ying)用(yong)(yong)于(yu)高層建筑、小(xiao)區、、機(ji)場、碼頭、消防、冶金、化工、紡(fang)織等不允(yun)許(xu)停(ting)電(dian)(dian)(dian)的重要(yao)場所，實現無人值(zhi)守(shou)連續供電(dian)(dian)(dian)。 

明泰(tai)電(dian)(dian)氣（蘇州）有限公司(si)是正泰(tai)集團在蘇州地區一家授權(quan)的經銷(xiao)企業(ye)，連續十年銷(xiao)量居正泰(tai)營(ying)銷(xiao)網絡名，公司(si)主(zhu)要經營(ying)“正泰(tai)”牌配電(dian)(dian)電(dian)(dian)器(qi)(qi)(qi)、控(kong)制電(dian)(dian)器(qi)(qi)(qi)、終端(duan)電(dian)(dian)器(qi)(qi)(qi)、電(dian)(dian)源電(dian)(dian)器(qi)(qi)(qi)、電(dian)(dian)力(li)電(dian)(dian)子、儀器(qi)(qi)(qi)儀表、建筑電(dian)(dian)器(qi)(qi)(qi)、高(gao)壓電(dian)(dian)器(qi)(qi)(qi)及成套設備(bei)。

單i選(xuan)(xuan)(xuan)按(an)(an)鈕控(kong)件(jian)一(yi)(yi)般都是成組(zu)出現的(de)(de)，具(ju)有互斥(chi)的(de)(de)性質，按(an)(an)鈕LA42批發價(jia)(jia)格，即同組(zu)單i選(xuan)(xuan)(xuan)按(an)(an)鈕中(zhong)(zhong)只能有一(yi)(yi)個(ge)是被選(xuan)(xuan)(xuan)中(zhong)(zhong)的(de)(de)。當單i選(xuan)(xuan)(xuan)按(an)(an)鈕處于(yu)選(xuan)(xuan)(xuan)擇狀(zhuang)態時，按(an)(an)鈕LA42價(jia)(jia)格，會在圓(yuan)(yuan)圈中(zhong)(zhong)顯示一(yi)(yi)個(ge)黑(hei)色實心圓(yuan)(yuan)。組(zu)框用(yong)來將相關的(de)(de)一(yi)(yi)些控(kong)件(jian)聚(ju)成一(yi)(yi)組(zu)。自繪(hui)(hui)式(shi)按(an)(an)鈕是指由程序而不(bu)(bu)是系統負責(ze)重繪(hui)(hui)的(de)(de)按(an)(an)鈕。此外，選(xuan)(xuan)(xuan)擇框、單i選(xuan)(xuan)(xuan)框還(huan)有一(yi)(yi)種不(bu)(bu)確定(ding)狀(zhuang)態，這時檢查框呈灰色顯示，不(bu)(bu)能接(jie)受用(yong)戶的(de)(de)輸入，按(an)(an)鈕LA42報價(jia)(jia)，以表明控(kong)件(jian)是無效的(de)(de)或無意義的(de)(de)。

按(an)鈕(niu)(niu)，是一種常用的(de)(de)控(kong)制(zhi)電器元(yuan)件(jian)，常用來(lai)接通或(huo)斷(duan)開(kai)‘控(kong)制(zhi)電路(lu)’（其中電流很小），從而達到控(kong)制(zhi)電動(dong)機或(huo)其他電氣設備(bei)運(yun)行目(mu)的(de)(de)的(de)(de)一種開(kai)關。按(an)鈕(niu)(niu)的(de)(de)用途很廣，例如車(che)床的(de)(de)起(qi)動(dong)與停機、正轉與反轉等；塔式(shi)吊車(che)的(de)(de)起(qi)動(dong)，常州(zhou)按(an)鈕(niu)(niu)LA42，停止，上升，下降(jiang)，前(qian)、后、左、右、慢(man)速(su)或(huo)快(kuai)速(su)運(yun)行等，都需要按(an)鈕(niu)(niu)控(kong)制(zhi)。按(an)鈕(niu)(niu)由按(an)鍵、動(dong)作(zuo)觸頭(tou)、復位彈簧、按(an)鈕(niu)(niu)盒組成。是一種電氣主控(kong)元(yuan)件(jian)。電氣符號SB，電氣圖如圖2按(an)鈕(niu)(niu)（SB）助記符。有(you)些功能的(de)(de)按(an)鈕(niu)(niu)有(you)特定的(de)(de)助記符！