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。

高壓柜主(zhu)要用(yong)(yong)于供(gong)電(dian)(dian)(dian)(dian)局或者(zhe)是變電(dian)(dian)(dian)(dian)所，這些地(di)方需(xu)要使(shi)用(yong)(yong)到的(de)電(dian)(dian)(dian)(dian)壓和電(dian)(dian)(dian)(dian)流都是比較高的(de)。主(zhu)要是用(yong)(yong)于發(fa)電(dian)(dian)(dian)(dian)、輸電(dian)(dian)(dian)(dian)、電(dian)(dian)(dian)(dian)能(neng)轉換等等作用(yong)(yong)的(de)，在(zai)使(shi)用(yong)(yong)的(de)過程當中，也需(xu)要使(shi)用(yong)(yong)到保護跳閘，這樣能(neng)夠更(geng)好的(de)起(qi)到保護的(de)作用(yong)(yong)，不容易出現危險(xian)的(de)事情。