Indoor HV Vacuum Circuit Breaker

Juhui Power Equipment Co., Ltd. manufactures high-voltage distribution equipment and pays close attention to different cabinet configurations. The factory is located in Yueqing, Zhejiang, and covers 1,500 square meters. A research team works on site. The Indoor HV Vacuum Circuit Breaker is used in 12kV, 50Hz three-phase power systems as a protection and control device. It is suitable for applications with frequent rated-current operation and repeated short-circuit interruption. The fixed side-mounted configuration is suitable for fixed switchgear cabinets and can also be used as a standalone unit. Applications include ring main power supplies, box-type substations, and various non-standard power systems. Production can follow customer designs. No minimum order quantity is required, and different models can be included in the same order.

This Indoor HV Vacuum Circuit Breaker has defined operating conditions. The ambient temperature ranges from -10°C to 40°C. Storage and transportation are permitted at temperatures down to -30°C. The installation altitude is below 2,000 meters. Higher-altitude applications require a higher rated insulation level. The daily average relative humidity is no more than 95%. The daily average saturated vapor pressure is no more than 2.2×10⁻³MPa, and the monthly average is no more than 1.8×10⁻³MPa. Seismic intensity must be below 8 degrees.

The installation site must be free from fire, explosion, heavy pollution, chemical corrosion, and strong vibration. The contact gap is 11±1mm, with an overtravel of 3.5±0.5mm. The three-phase opening and closing bounce time is no more than 2ms. Average opening speed is 0.9~1.2m/s, and average closing speed is 0.5~0.8m/s. The opening time at rated voltage is no more than 0.05s, while the opening time at low voltage is no more than 0.08s. Closing time is 0.1s. Each phase of the main circuit has its specified resistance value. The moving and fixed contacts allow a total wear of 3mm. These parameters define the operating conditions for the side-mounted installation.

Non-standard power systems may require additional after-sales support. Juhui Power Equipment Co., Ltd. handles foreign trade and has a dedicated after-sales team. If a problem occurs, the team first checks the cause. Parts-related problems can be handled with replacement parts, while transport damage can be handled through replacement or after-sales service. The product carries a one-year warranty. Spare parts are also available for purchase. When ordering, provide the names and quantities of the required spare parts to make later maintenance easier.

The Indoor HV Vacuum Circuit Breaker is available according to customer requirements and can be supplied for non-standard power systems. Third-party inspection is welcome, and every unit is checked before packing.

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