高压开关柜是指用于电力系统发电、输电、配电、电能转换和消耗中起通断、控制或保护等作用，高压开关柜按作电压等级在3.6kV~550kV的电器产品，高压隔离开关与接地开关、高压负荷开关、高压自动重合与分段器，高压操作机构、高压防爆配电装置和高压开关柜等几大类。
High-voltage switchgear refers to the electrical products used in power generation, transmission, distribution, power conversion and consumption in power system, which play the role of on-off, control or protection. High-voltage switchgear is used as a voltage grade of 3.6kV~550kV electrical products, high-voltage isolator and grounding switch, high-voltage load switch, high-voltage automatic reclosure and subsection device, and high-voltage operator. Structure, high-voltage explosion-proof distribution equipment and high-voltage switchgear and other major categories.