KYN28A-12 (GZS1) armored remove AC metal-enclosed switchgear (hereinafter referred to as switchgear) is 3.6 ~ 12kV indoor three-phase AC 50Hz single busbar section system bus and power distribution equipment. Mainly used in power plants, power transmission medium and small generators, the power of mining enterprises secondary substation and electrical power distribution systems, large-scale high-voltage power transmission and motor starters, etc., the implementation of control and protection, monitoring. The switchgear meets IEC62271-200, GB3906 and other standards, a reliable "Five Anti" interlock function, can be equipped with VS1, VE5 and VD4 vacuum circuit breakers and other similar, in fact, a superior performance of power distribution equipment.