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Vs1-12 Indoor High Voltage AC Vacuum Circuit Breaker. High Breaking Capacity: Designed for frequent operation and strict short circuit breaking requirements. Vacuum Arc Extinguishing: Utilizes vacuum medium for reliable arc extinction in high voltage applications. Flexible Installation: Supports both fixed installation units and hand cart unit configurations. Comprehensive Protection: Features overcurrent, overvoltage, and circuit-breaker failure protection. Certified Quality: ISO9001-2000 and CCC certified for safety and quality assurance. Customization Options: Offers customization from samples, designs, and full customization services. 100% Inspection: Every finished product undergoes visual and functional inspection.