Fixed Type Solid-Sealed Vacuum Circuit Breaker 12kV

Product Overview
The VS1-12 Solid-Sealed Vacuum Circuit Breaker (Fixed Type), is a high-performance indoor switching device engineered for 12kV, 50/60Hz three-phase AC power systems. It serves as a core protection and control unit for power grid equipment and industrial and mining enterprise power equipment, delivering reliable performance in demanding scenarios.Specifically designed for frequent operation at rated working current and repeated short-circuit current interruption, this circuit breaker features an integrated design of operating mechanism and breaker body. It can be used as a fixed installation unit or equipped with a dedicated propulsion mechanism to form a truck-mounted unit, offering flexible deployment options for various indoor power distribution needs.

Technical Advantages

• Solid-Sealed Technology: Adopts advanced solid-sealed design, enhancing insulation performance, preventing environmental interference, and ensuring long-term reliable operation with minimal maintenance.
• Integrated & Flexible Design: Integrated operating mechanism and breaker body reduce installation space; optional dedicated propulsion mechanism enables conversion to a truck-mounted unit, adapting to fixed or withdrawable switchgear configurations.
• Superior Operational Performance: Excels in frequent operation at rated current and repeated short-circuit current interruption, fully meeting the high-demand requirements of industrial and power grid applications.
• Global Standard Compliance: Complies with international IEC standards and relevant national standards, ensuring consistent performance with global power system specifications and easy project acceptance.
• Robust Durability: High-quality materials and precision manufacturing ensure resistance to wear, electrical aging, and harsh indoor conditions, extending service life and reducing lifecycle costs.

Operating Environmental Conditions

•  Ambient Air Temperature: Upper limit +40℃, lower limit -15℃
•  Altitude: ≤1000m (customized insulation level available for higher elevations, meeting overseas high-altitude project needs)
• Seismic Intensity: Not exceeding 8 degrees, suitable for earthquake-prone regions
•  Relative Humidity: Daily average ≤95%, Monthly average ≤90%
• Installation Site: Indoor areas free from fire, explosion, severe pollution, chemical corrosion, and severe vibration

Key Technical Parameters

Application Scenarios

With its flexible installation, multi-model compatibility, and reliable performance, the VS1-12 Solid-Sealed Vacuum Circuit Breaker is widely used in global 12kV power systems, especially suitable for:

• Power Grid Infrastructure: Protection and control of indoor power grid equipment, including distribution stations and power transmission lines, ensuring grid stability.
• Industrial & Mining Enterprises: Ideal for factories, mines, and industrial parks requiring frequent load switching or repeated short-circuit current interruption, protecting production equipment.
• Commercial & Public Facilities: Used in high-rise buildings, shopping malls, hospitals, and data centers, providing reliable power protection for critical loads.
• Switchgear Integration: Fixed installation in indoor switchgear; optional truck-mounted design for withdrawable switchgear, adapting to various cabinet configurations.
• Global EPC Projects: Compliant with international standards, suitable for overseas engineering, procurement, and construction projects, meeting regional technical requirements.