聯系電話(hua)：13917768445
聯系電話(hua)：13917768445
空開開關、交流接觸器、電機馬達保護器（或熱繼(ji)電器(qi)）、中間繼(ji)電器(qi)等，但也可以只選擇電機馬達保護(hu)器(qi)、空氣開關、交流接觸器(qi)，其他可以不用，有時需要(yao)加配變比互(hu)感(gan)器(qi)。
自(zi)動空氣(qi)開關又稱(cheng)低壓斷路器(qi)，它(ta)具有較好的操作(zuo)特性(xing)(xing)——分(fen)、合閘操作(zuo)速(su)度快，保護(hu)特性(xing)(xing)——具有過(guo)載、短路、過(guo)電(dian)流、失電(dian)壓等保護(hu)特性(xing)(xing)，滅弧(hu)特性(xing)(xing)——滅弧(hu)室能快速(su)滅弧(hu)。由于它(ta)兼有斷路器(qi)和保護(hu)裝置的良好功能，使(shi)用起來十(shi)分(fen)方(fang)便，所(suo)以在低壓配電(dian)系統(tong)中(zhong)作(zuo)為控制(zhi)及保護(hu)設備應用。
交流(liu)接(jie)觸(chu)(chu)器(qi)的(de)作用(yong)(yong)(yong)：作為執行元件，用(yong)(yong)(yong)于接(jie)通(tong)、分斷(duan)線(xian)路(lu)(lu)、或(huo)頻繁的(de)控(kong)(kong)制電動(dong)(dong)(dong)機(ji)等(deng)設備(bei)運行。由(you)動(dong)(dong)(dong)、靜主觸(chu)(chu)頭(tou)(tou)(tou)，滅弧(hu)罩，動(dong)(dong)(dong)、靜鐵芯，輔助觸(chu)(chu)頭(tou)(tou)(tou)和支架外殼等(deng)組成。電磁(ci)(ci)線(xian)圈通(tong)電后，使動(dong)(dong)(dong)鐵芯在電磁(ci)(ci)力作用(yong)(yong)(yong)下(xia)吸合，直接(jie)或(huo)通(tong)過杠桿傳動(dong)(dong)(dong)使動(dong)(dong)(dong)觸(chu)(chu)頭(tou)(tou)(tou)與靜觸(chu)(chu)頭(tou)(tou)(tou)接(jie)觸(chu)(chu)，接(jie)通(tong)電路(lu)(lu)。電磁(ci)(ci)線(xian)圈斷(duan)電后，動(dong)(dong)(dong)鐵芯在復位彈簧作用(yong)(yong)(yong)下(xia)自動(dong)(dong)(dong)返回(hui)，俗稱釋放，觸(chu)(chu)頭(tou)(tou)(tou)分開，電路(lu)(lu)分斷(duan)。交流(liu)接(jie)觸(chu)(chu)器(qi)是(shi)電力拖動(dong)(dong)(dong)和自動(dong)(dong)(dong)控(kong)(kong)制系統中(zhong)應用(yong)(yong)(yong)最普遍的(de)一種低壓(ya)控(kong)(kong)制電器(qi)。
電機馬達保護器的(de)作用：如果(guo)負載設(she)備是(shi)與(yu)三相(xiang)電(dian)(dian)(dian)動(dong)機串聯，它(ta)的(de)作用是(shi)當電(dian)(dian)(dian)動(dong)機出現過載時電(dian)(dian)(dian)動(dong)機會(hui)出現溫升現象，最終將(jiang)電(dian)(dian)(dian)動(dong)機燒毀。串聯了電(dian)(dian)(dian)機馬達(da)保護(hu)器(qi)之(zhi)后，電(dian)(dian)(dian)機馬達(da)保護(hu)器(qi)的(de)開閉點是(shi)在(zai)控制回路(lu)中，從而控制電(dian)(dian)(dian)動(dong)機的(de)斷電(dian)(dian)(dian)或（復位后）送電(dian)(dian)(dian)（保護(hu)電(dian)(dian)(dian)動(dong)機)。
中(zhong)(zhong)間(jian)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)器：用(yong)于(yu)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)保護與(yu)(yu)自(zi)動控(kong)制系統(tong)中(zhong)(zhong)，以增加觸(chu)(chu)點的(de)(de)(de)數量及容(rong)量。 它用(yong)于(yu)在(zai)控(kong)制電(dian)(dian)(dian)(dian)(dian)路中(zhong)(zhong)傳(chuan)遞中(zhong)(zhong)間(jian)信號。中(zhong)(zhong)間(jian)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)器的(de)(de)(de)結構和原理(li)與(yu)(yu)交流(liu)(liu)(liu)接(jie)觸(chu)(chu)器基本(ben)相同，與(yu)(yu)接(jie)觸(chu)(chu)器的(de)(de)(de)主(zhu)要(yao)區(qu)別在(zai)于(yu)：接(jie)觸(chu)(chu)器的(de)(de)(de)主(zhu)觸(chu)(chu)頭可以通過(guo)大電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，而(er)中(zhong)(zhong)間(jian)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)器的(de)(de)(de)觸(chu)(chu)頭只能(neng)通過(guo)小電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)。所以，它只能(neng)用(yong)于(yu)控(kong)制電(dian)(dian)(dian)(dian)(dian)路中(zhong)(zhong)。 它一(yi)般(ban)是(shi)(shi)沒有主(zhu)觸(chu)(chu)點的(de)(de)(de)，因(yin)為過(guo)載(zai)能(neng)力(li)比(bi)較小。所以它用(yong)的(de)(de)(de)全部都是(shi)(shi)輔助觸(chu)(chu)頭，數量比(bi)較多。新(xin)國標(biao)對中(zhong)(zhong)間(jian)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)器的(de)(de)(de)定(ding)義(yi)是(shi)(shi)K，老國標(biao)是(shi)(shi)KA。一(yi)般(ban)是(shi)(shi)直流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)源供電(dian)(dian)(dian)(dian)(dian)。少數使用(yong)交流(liu)(liu)(liu)供電(dian)(dian)(dian)(dian)(dian)。
