GZS1 indoor metal-clad withdrawable switchgear (hereinafter short as switchgear) is the complete power distribution equipment for 3.6~24kV, 3-phase AC, 50Hz, single-bus and single-bus sectionalized systems. It is mainly used for power transmission of middle/small generators in power plants; power receiving, transmission for substations in power distribution and power system 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.