KYN61A 40.5 miniaturization armoured type ac metal-enclosed switchgear series three-phase communicate 0 hz and rated voltage 40.5 KV indoor single busbar and busbar section system complete sets of power distribution equipment, applicable to power plants, substations, industrial and mining enterprises, railway transportation, the distribution of high-rise buildings as acceptance and distribution of electrical energy, and to implement the circuit control, protection and monitoring, and other functions.