This series of high-altitude high-voltage vacuum contactors have been developed by our company in response to market demands. We use high-quality vacuum interrupters , which achieves military-grade quality. The structure consists of a metal frame and insulating supports, ensuring robustness and reliability with more stable performance. The main circuit center distance ranges from 190mm to 210mm. The main circuit vacuum arc-extinguishing chamber features a sealed structure, providing stable and reliable insulation performance with a large creepage distance, large stroke, and strong breaking capacity. It is suitable for plateau and high-altitude areas with altitudes between 2000 and 4000 meters. It is used for long-distance switching, analysis, and frequent starting and controlling of AC motors, transformers, and capacitors, and other applications. There are two types available: electromagnetic holding and permanent magnet holding.