The XGN66-12 type fixed enclosed switchgear (hereinafter referred to as switchgear) is a new generation of high-voltage electrical complete products of our company. It meets the requirements of the national standard GB3906 "-35KV AC metal-enclosed switchgear" and the Ministry of Electric Power DLT404 "Technical conditions for ordering indoor AC high-voltage switchgear", and also meets the requirements of the international standard IEC60298 "Requirements for AC metal-enclosed switchgear and controlgear above 1KV and below 52KV".This product incorporates advanced foreign technology. It is small in size, only 50% the size of a typical switchgear. The circuit breaker boasts high reliability and excellent performance; its "five-proof" interlocking mechanism is reliable and simple. The switchgear is a complete indoor unit for 3.6, 7.2, and 12KV three-phase AC 50Hz single busbar sections, used for receiving and distributing electrical energy. It also has functions for circuit control, protection, and monitoring. It can be used in various types of power plants, substations, industrial and mining enterprises, high-rise buildings, and can also be combined with ring main units in switching stations.