There are various types of switchgear, which can be divided into high-voltage switchgear, medium voltage switchgear, and low-voltage switchgear according to the different voltage levels. High voltage switchgear is mainly used in power systems with voltage levels between 3.6kV and 550kV, medium voltage switchgear is suitable for systems with voltage levels between 1kV and 35kV, and low voltage switchgear is mainly used in systems with voltage levels below 1kV.

High voltage switchgear can achieve control over the opening and closing of power sources to meet the electricity needs of different power equipment. When the system malfunctions, the high-voltage switchgear can quickly cut off the fault current, protecting equipment and circuits from damage. Through built-in voltage and current transformers, as well as relays and other equipment, high-voltage switchgear can monitor the operating status of the power system in real time and promptly identify potential safety hazards.