高壓柜是指用于電力系統發電、輸電、配電、電能轉換和消耗中起通斷、控制或保護等作用，高壓開關柜按作電壓等級在3.6kV~550kV的電器產品，高壓隔離開關與接地開關、高壓負荷開關、高壓自動重合與分段器，高壓操作機構、高壓防爆配電裝置和高壓開關柜等幾大類。

高(gao)(gao)壓柜主要(yao)用(yong)(yong)(yong)于供(gong)電(dian)(dian)(dian)局或(huo)者是變(bian)電(dian)(dian)(dian)所，這些地(di)方需要(yao)使用(yong)(yong)(yong)到的(de)電(dian)(dian)(dian)壓和電(dian)(dian)(dian)流(liu)都是比(bi)較(jiao)高(gao)(gao)的(de)。主要(yao)是用(yong)(yong)(yong)于發電(dian)(dian)(dian)、輸電(dian)(dian)(dian)、電(dian)(dian)(dian)能(neng)轉(zhuan)換等(deng)等(deng)作用(yong)(yong)(yong)的(de)，在(zai)使用(yong)(yong)(yong)的(de)過程當中，也需要(yao)使用(yong)(yong)(yong)到保(bao)(bao)護跳(tiao)閘，這樣能(neng)夠(gou)更好的(de)起到保(bao)(bao)護的(de)作用(yong)(yong)(yong)，不容易出現危險的(de)事(shi)情(qing)。