KYN28-12(GZS1-12) Armored Withdrawable AC Metal-Enclosed Switchgear (hereinafter referred to as switchgear) is a new product independently designed and developed based on the absorption of advanced manufacturing technologies at home and abroad, which can replace various old types of metal-enclosed switchgear. The product has the following obvious advantages: The product's enclosure is completely made of aluminum-zinc coated steel plate formed by multiple bending through CNC machine tool processing and then assembled by bolts, with high mechanical strength, effectively ensuring the neatness and beauty of the product. The cabinet door adopts plastic spraying coating, which has strong impact resistance and corrosion resistance.

The product enclosure has a protection grade of IP4X. The main switch of this product can be equipped with ZN63A(VS1) vacuum circuit breaker, fixed load switch, and can be equipped with communication interface to connect with the mobile phone of the duty personnel to realize remote control and telemetry functions.

No matter what kind of circuit breaker is selected, the air insulation distance of bare conductor can be guaranteed to be greater than 125mm, and the composite insulation distance is greater than 60mm. The circuit breakers all have the unique advantages of long life, high parameters, less maintenance and small volume. It is mainly used in power plants, small and medium-sized generator power transmission, industrial and mining enterprise power distribution, and power receiving & transmission of secondary substations in power systems, as well as the starting of large high-voltage motors.