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(zhu)要用(yong)(yong)(yong)于(yu)供電(dian)(dian)局(ju)或(huo)者是(shi)(shi)變電(dian)(dian)所(suo)，這些地方(fang)需要使(shi)用(yong)(yong)(yong)到的電(dian)(dian)壓和電(dian)(dian)流都是(shi)(shi)比較高(gao)的。主(zhu)要是(shi)(shi)用(yong)(yong)(yong)于(yu)發電(dian)(dian)、輸電(dian)(dian)、電(dian)(dian)能轉換等等作用(yong)(yong)(yong)的，在使(shi)用(yong)(yong)(yong)的過程當(dang)中(zhong)，也(ye)需要使(shi)用(yong)(yong)(yong)到保護跳閘，這樣能夠更好的起到保護的作用(yong)(yong)(yong)，不容易出現(xian)危險的事情。