Claire
Mr.Fu
Claire
New Product Launch: VSB-12 Indoor High-Voltage Vacuum Circuit Breaker – Reliable Power for 12kV Systems
The VSB-12 Indoor High-Voltage Vacuum Circuit Breaker is a high-performance switching device designed for 12kV power systems. With a rated current range of 630A to 4000A and short-circuit breaking capacity up to 40kA, it offers high insulation strength, long mechanical life, and rapid switching performance, making it suitable for power plants, industrial plants, and large building distribution systems.
Core Performance Parameters
Rated Voltage: 12kV
Rated Current: 630A–4000A(Multiple options available)
Short-Circuit Breaking Current: Up to 40kA
Insulation Level: Power frequency withstand voltage 42kV/Lightning impulse withstand voltage 75kV
Mechanical Life: 20,000 operations
Control Voltage: AC/DC 110V/220V compatible
Technical Highlights
High Breaking Capacity: Vacuum interrupter technology enables reliable breaking of up to 40kA short-circuit current
Long Mechanical Life: 20,000 mechanical operations suitable for frequent switching requirements
Rapid Switching: Opening time ≤0.05s, closing time 0.1s, effectively limiting fault impact
Low Contact Resistance: Main circuit resistance ≤50μΩ reduces energy loss
Wide Control Voltage Range: Compatible with AC/DC 110V/220V for various site conditions
The VSB-12 features modular design with compact structure for easy installation and maintenance. The contact system uses special alloy materials with strong arc resistance for long electrical life. Insulation components employ high-strength eco-friendly materials meeting rigorous electrical insulation requirements.
Application Scenarios
Power Distribution Systems: Regional substations, distribution rooms, switching stations
Industrial Applications: Large industrial plants in steel, chemical, and mining sectors
Critical Infrastructure: Hospitals, data centers, airports, metro systems
New Energy: Supporting infrastructure for PV plants and wind farm step-up stations
The launch of the VSB-12 Indoor High-Voltage Vacuum Circuit Breaker provides a more reliable and efficient protection solution for 12kV distribution systems. With excellent electrical performance, long service life, and flexible configuration options, it is an ideal choice for modern power system protection, effectively enhancing the safety and reliability of distribution networks.
About Us:
Mingri Electric Co., Ltd. is a leading provider of high-quality electrical components and solutions, specializing in switchgear,circuit breakers,switches, etc. We are dedicated to delivering innovative products that meet the evolving needs of the global power industry.