1. Vacuum Arc Extinguishing Technology: Utilizing a vacuum arc-extinguishing chamber for current interruption results in a short arc duration, minimal contact wear, and rapid recovery of dielectric insulation strength after interruption, contributing to long-term stable breaking performance. 2. Reliable Breaking and Protection Capabilities: Suitable for breaking and opening normal load currents in medium-voltage systems, and can be used in conjunction with relay protection devices to clear short circuits and other faults, providing control and protection for lines, transformers, motors, and other equipment. 3. Stable Mechanical Operation Performance: The operating mechanism exhibits good mechanical stability and consistent repeatability, meeting the long-term operational requirements of medium-voltage switchgear. 4. Long Mechanical and Electrical Lifespan: Vacuum arc extinguishing reduces contact erosion and lowers the maintenance requirements of the arc-extinguishing system, making it suitable for industrial applications with high demands for equipment reliability and lifespan. 5. Modular Structure Design: Employing a modular design concept, the circuit breaker body, operating mechanism, and auxiliary control components are rationally integrated, facilitating installation, inspection, and maintenance. 6. Comprehensive Mechanical and Electrical Interlocks Corporate mechanical and electrical interlocks can be configured according to the switchgear design, reducing the risk of misoperation and improving the operational safety of medium-voltage power distribution systems. 7. Supports Electric and Remote Operation Equipped with energy storage motors, closing coils, opening coils, auxiliary contacts, and other accessories, it can work in conjunction with relay protection and automation systems to achieve remote opening and closing and status feedback. 8. Low Maintenance Requirements The vacuum interrupter is a sealed structure, requiring no additional gas or other arc-extinguishing media. Routine maintenance mainly focuses on the operating mechanism, mechanical transmission parts, and auxiliary control circuits. 9. Good Environmental Adaptability Suitable for medium-voltage power distribution environments in industry, power, and infrastructure. Specific permissible temperature, altitude, humidity, and other operating conditions should be determined according to the ABB technical data for the corresponding VD4/G model. 10. Wide Application Range Applicable to incoming lines, feeders, transformers, motors, and industrial power distribution circuits in medium-voltage switchgear, commonly found in power, steel, mining, cement, petrochemical, manufacturing, and infrastructure sectors.

1. Vacuum Arc Extinguishing Technology: Utilizing a vacuum arc-extinguishing chamber for current interruption, it offers strong insulation and arc-extinguishing performance. The sealed structure of the vacuum arc-extinguishing chamber reduces the impact of the external environment on the arc-extinguishing system. 2. Reliable Breaking Performance: Vmax is primarily used for normal load operation and fault current interruption in medium-voltage power distribution systems. It can be used in conjunction with relay protection devices to protect against short circuits, overloads, and other abnormal conditions. 3. Long Mechanical and Electrical Lifespan: Vacuum arc-extinguishing technology reduces contact arc burn-out, and the mature operating mechanism is suitable for long-term operation, reducing maintenance work throughout the equipment's lifespan. 4. Compact Structural Design: The overall structure is compact, suitable for medium-voltage switchgear, and optimizes internal cabinet space while meeting insulation and breaking performance requirements. 5. Modular Design: Adopting a modular design concept facilitates installation, inspection, and maintenance, and can be configured according to specific switchgear and power distribution system solutions. 6. Fixed or Removable Installation Options Available Depending on the specific Vmax model and switchgear configuration, fixed or removable installation methods are available to facilitate selection for various medium-voltage power distribution projects. 7. Comprehensive Mechanical Interlocking Mechanical and electrical interlocks reduce the risk of misoperation. For removable configurations, interlocking with working positions, test positions, and other states can further enhance switchgear operational safety. 8. Supports Remote and Automated Operation Configurable with trip coils, closing coils, energy storage motors, auxiliary contacts, and other accessories, it can integrate with relay protection and automated control systems to achieve remote tripping and closing, and status monitoring. 9. Low Maintenance Requirements The vacuum interrupter requires no replenishment of the arc-extinguishing medium; routine maintenance primarily focuses on the operating mechanism, mechanical transmission components, and auxiliary control circuits. 10. Wide Range of Applications Vmax can be applied to medium-voltage systems in industrial power distribution, power facilities, commercial buildings, and infrastructure for: Power line protection Transformer protection Motor and industrial load protection Medium-voltage switchgear incoming and feeder lines Power distribution system control and protection