VHOS-12GD 戶內高壓三工位真空斷路器具有優異的電氣、機械性能，機構可靠穩定、壽命長。主回路采用固封柱，提高了斷路器的環境適應性和絕緣可靠性；可靠的機械和電子性能，延長的機械壽命和電子壽命，使斷路器的免維護成為可能。其可用于 3.6-12kV 電力系統，作為電網設備，工礦企業動力設計的保護盒控制單元，適用于各種不同性質的負荷和頻繁操作、多次開斷短路電流的場合。產品擁有完善的機械和電氣聯鎖裝置，具有較高的操作穩定性和可靠性，保障操作人員和設備的安全，保障用電安全。

1、采用固封柱技術。2、產品采用模塊式設計：框架結構，集成了隔離開關、固封真空斷路器、接地開關、傳感器、聯鎖機構、操作機構為一體的高性能小型化高壓電氣產品。3、適配柜體尺寸為（480×1000×1800）mm。4、旋轉式隔離開關，分閘后具有可見的斷口。5、隔離開關、斷路器、接地開關之間有強制機械聯鎖，防止誤操作。6、斷路器采用模塊式操作機構、可獨立更換或檢修、互換性好。可以用手動操作，也可選用交、直流儲能操作 , 實現遠程控制。7、柜門與接地開關設計有可靠聯鎖結構，保障操作人員的安全。

VHOS-12GD indoor high-voltage three-station vacuum circuit breaker has excellent electrical and mechanical properties, reliable and stable mechanism and long service life. The main circuit adopts fixed pole, which improves the environmental adaptability and insulation 

reliability of the circuit breaker. Reliable mechanical and electronic performance, prolonged mechanical life and electronic life make maintenance-free circuit breaker possible. It can be used in 3.6-12kV power system, as the power grid equipment and the protection box control unit of power design of industrial and mining enterprises, and is suitable for various loads with different properties and occasions of frequent operation and repeated short-circuit current interruption. The products are equipped with perfect mechanical and electricalinterlocking devices, with extremely high operational stability and reliability, ensuring the safety of operators and equipment and ensuring the safety of electricity utilization. 

1.Using solid sealing pole technology. 2.The product adopts modular design: frame structure, integrating high-performance miniaturized high-voltage electrical products with isolating switch, vacuum circuit breaker, grounding switch, sensor, interlocking mechanism and operating mechanism. 3.Adapted cabinet size is (480× 1000× 1800) mm. 4.Rotary isolating switch with visible fracture after opening. 5.There is mandatory mechanical interlock between isolating switch, circuit breaker and grounding switch to prevent misoperation. 6.Circuit breaker adopts modular operating mechanism, which can be independently replaced or overhauled with good interchangeability. It can be operated manually or by AC and DC energy storage to realize remote control. 7.The cabinet door and grounding switch are designed with reliable interlocking structure to ensure the safety of operators.