VS1-12kV/630-1250A Vacuum Circuit Breaker with Insulated Tube The VS1-12kV/630-1250A is a high-performance vacuum circuit breaker (VCB) designed for medium-voltage applications up to 12kV. It features a 630A to 1250A current rating, making it suitable for a wide range of industrial, commercial, and utility power distribution systems. A key component of this breaker is its insulated tube, which enhances safety, reliability, and operational efficiency. Design and Construction The VS1-12kV/630-1250A utilizes a vacuum interrupter housed within an insulated tube, ensuring superior arc quenching and dielectric strength. The vacuum interrupter eliminates the risk of gas emissions or external environmental contamination, providing a maintenance-free solution. The insulated tube is typically made of high-grade epoxy resin or other robust insulating materials, offering excellent mechanical and electrical resistance. This design prevents phase-to-phase or phase-to-ground faults, even in harsh operating conditions. Key Features 1. High Breaking Capacity: The vacuum interrupter ensures efficient interruption of short-circuit currents, minimizing damage to the electrical system. 2. Insulated Tube Protection: The insulated enclosure enhances safety by preventing accidental contact with live parts and reducing the risk of flashovers. 3. Compact and Modular Design: The breaker is designed for easy installation in switchgear panels, optimizing space utilization. 4. Long Service Life: With minimal moving parts and no need for gas or oil replenishment, the breaker offers low maintenance and extended operational life. 5. Environmental Resistance: The insulated tube provides resistance to moisture, dust, and chemical exposure, ensuring stable performance in diverse environments. Applications The VS1-12kV/630-1250A is widely used in: - Power distribution networks - Industrial plants - Renewable energy systems - Mining and oil & gas installations - Railway and infrastructure projects Advantages Over Conventional Breakers Compared to SF6 or oil-based breakers, the VS1-12kV/630-1250A offers: - No greenhouse gas emissions (unlike SF6 breakers) - No fire hazards (unlike oil-filled breakers) - Faster switching times and higher reliability due to vacuum technology Conclusion The VS1-12kV/630-1250A vacuum circuit breaker with an insulated tube is a robust, eco-friendly, and highly efficient solution for medium-voltage protection. Its advanced insulation and vacuum interruption technology ensure safe, reliable, and maintenance-free operation, making it a preferred choice for modern power systems.