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High-Performance 12kv Indoor Vacuum Circuit Breaker for Rail Networks. High Mechanical Life: 30,000 cycles mechanical life ensuring long-term reliability. Vacuum Interruption: Sealed vacuum chamber for maintenance-free and safe operation. Flexible Mounting: Draw-out or fixed installation with 150mm pole distance. Multi-Power Operation: Supports AC/DC energy storage and manual operation modes. High Breaking Capacity: Rated short-circuit breaking current up to 40kA. OEM/ODM Support: Full customization options available for non-standard needs. Standard Compliance: Conforms to GB1984-2003 and IEC standards.