Indoor High Voltage Fixed Vacuum Circuit Breaker – 24kV, 1250A, 25kA The Indoor High Voltage Fixed Vacuum Circuit Breaker (VCB) is a robust and reliable electrical protection device designed for medium-voltage power distribution systems. Rated at 24kV, 1250A continuous current, and 25kA short-circuit breaking capacity, this breaker is engineered to ensure safe and efficient operation in industrial, commercial, and utility applications. Its compact, fixed-mount design makes it ideal for indoor switchgear installations, providing high-performance protection against overloads, short circuits, and other electrical faults. Key Features 1. Vacuum Interruption Technology The breaker utilizes a vacuum interrupter as the arc-extinguishing medium, ensuring minimal maintenance and long service life. The vacuum chamber provides superior dielectric strength, enabling fast and reliable interruption of high fault currents without producing harmful byproducts like SF6 gas. 2. High Breaking Capacity With a 25kA short-circuit breaking capacity, the VCB can swiftly isolate faults, protecting downstream equipment and minimizing downtime. The quick arc extinction in a vacuum ensures minimal contact erosion, enhancing durability. 3. Compact and Fixed Design Designed for indoor installations, the fixed-mount configuration simplifies installation and reduces space requirements in switchgear panels. The sturdy construction ensures stability and resistance to mechanical stress. 4. Advanced Contact Material The breaker features high-quality CuCr (Copper-Chromium) contacts, which provide excellent electrical conductivity and resistance to welding, even under high-current conditions. 5. Reliable Operating Mechanism Equipped with a spring-operated mechanism, the breaker ensures fast and consistent opening and closing operations. The mechanism is designed for low energy consumption and high mechanical endurance (typically 10,000+ operations). 6. Safety and Protection - Integrated earthing switch (optional) for safe maintenance. - Mechanical and electrical interlocks to prevent incorrect operations. - IP-rated enclosure for dust and moisture resistance. 7. Compliance with Standards The breaker complies with IEC 62271, ANSI C37.04, and other international standards, ensuring reliability and interoperability in global power systems. Applications - Power distribution networks (secondary substations, ring main units). - Industrial plants (cement, steel, mining). - Renewable energy systems (solar/wind farms). - Commercial buildings and data centers. Advantages Over Alternatives - Lower maintenance compared to oil or SF6 breakers. - Environmentally friendly (no greenhouse gas emissions). - Longer lifespan due to minimal contact wear. Conclusion This 24kV, 1250A, 25kA Indoor Fixed Vacuum Circuit Breaker is a high-performance solution for modern medium-voltage power systems, combining reliability, safety, and efficiency in a compact design. Its advanced vacuum interruption technology ensures optimal protection while minimizing operational costs, making it a preferred choice for critical electrical infrastructure.