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)壓柜主要(yao)用(yong)(yong)(yong)(yong)于(yu)(yu)供電(dian)(dian)(dian)局或者是(shi)變電(dian)(dian)(dian)所，這些地方需要(yao)使(shi)用(yong)(yong)(yong)(yong)到(dao)的(de)(de)電(dian)(dian)(dian)壓和電(dian)(dian)(dian)流都是(shi)比較高(gao)的(de)(de)。主要(yao)是(shi)用(yong)(yong)(yong)(yong)于(yu)(yu)發(fa)電(dian)(dian)(dian)、輸電(dian)(dian)(dian)、電(dian)(dian)(dian)能(neng)轉換(huan)等等作用(yong)(yong)(yong)(yong)的(de)(de)，在使(shi)用(yong)(yong)(yong)(yong)的(de)(de)過(guo)程當中，也需要(yao)使(shi)用(yong)(yong)(yong)(yong)到(dao)保(bao)護(hu)跳閘，這樣(yang)能(neng)夠更好的(de)(de)起到(dao)保(bao)護(hu)的(de)(de)作用(yong)(yong)(yong)(yong)，不容易出(chu)現危險(xian)的(de)(de)事情(qing)。