KYN28 indoor metal-clad withdrawable switchgear (hereinafter short as switchgear) is a complete power distribution device for 3.6~24kV, 3-phase AC 50Hz, single-bus and single-bus sectionalized systems. It is mainly used for power distribution networks for middle to small generators in power plants; power receiving, transmission for substations in power distribution and power systems of factories, mines and enterprises, and starting of large high-voltage motor, etc., so as to control, protect and monitor the system. The switchgear meets IEC298, GB3906-91.In addition to be used with domestic VS1 vacuum circuit breaker; it can also be used with VD4 from ABB, 3AH5 from Siemens domestic ZN65A, and VB2 from GE, etc. It is truly a power distribution device with good performance.