Email:info@weisho.com
Vacuum Circuit Breaker Manufacturer
WEISHO, as a leading manufacturer of Vacuum circuit breakers in the market, not only creates high-quality products with strict processes, but also provides the most competitive prices with its complete supply chain advantages. At the same time, we support OEM manufacturing and personalized customization services to help customers enhance their brand competitiveness and market value.
What are our characteristics
Production technology
Adopting industry-leading manufacturing processes, continuously optimizing production processes, and improving efficiency and accuracy
Customization and OEM/ODM
Supports OEM/ODM services and can provide customized solutions according to your needs, including rated current, brand identification, etc
High performance-price ratio
Efficient production and strong supply chain management ensure high quality and low prices, reducing customer procurement costs
Long term partnership
Putting customers at the center, establishing long-term stable cooperation, and assisting in the growth of customer business.
Customizable vacuum circuit breaker
Explore our extensive range of customized Vacuum circuit breakers, suitable for various distribution scenarios and professional applications. We provide comprehensive solutions from basic circuit protection to high-performance intelligent control:
Outdoor Vacuum circuit breaker
Indoor Vacuum Circuit Breaker
SF6 Vacuum Circuit Breaker
Permanent Magnet smart Vacuum Circuit Breaker
A brief introduction
WHY CHOOSE US
- Industry leading testing: Every vacuum circuit breaker undergoes strict 100% international electrical safety standard testing
- High quality materials: High-strength ceramic/metal vacuum interrupters ensure excellent insulation performance and long-term stability
- Engineering Innovation: Our R&D team optimizes the vacuum arc-extinguishing technology to enhance breaking capacity and short-circuit protection
- Global certification: Our entire vacuum circuit breaker series has obtained IEC, CE, UL, and regional electrical safety certifications
- Comprehensive support: from model selection matching to on-site debugging training and after-sales technical maintenance
Why Choose A Vacuum Circuit Breaker?
A vacuum circuit breaker (VCB) offers superior arc extinguishing performance, long service life, and minimal maintenance. Its vacuum interrupter ensures fast, clean operation without the risk of oil leaks or gas emissions. Compared with other types, VCBs are more reliable, environmentally friendly, and ideal for medium- and high-voltage power systems.
Superior Arc Quenching
The Vacuum Circuit Breaker uses high vacuum insulation to extinguish arcs instantly and protect the system.
- Fast arc extinction – Instantly breaks the arc during short circuits.
- Stable insulation – High vacuum prevents re-ignition.
- Reduced system stress – Minimizes equipment damage.
Reliable and Durable
The Vacuum Circuit Breaker delivers long service life with consistent performance.
- Long mechanical endurance – Over 10,000 operations without failure.
- Consistent operation – Reliable in harsh environments.
- Minimal contact wear – Ensures long-term efficiency.
Low Maintenance
The Vacuum Circuit Breaker requires little servicing, lowering total maintenance costs.
- No oil or gas medium – No leakage or contamination.
- Simple structure – Easy inspection and replacement.
- Reduced downtime – Extends system availability.
Eco-Friendly and Safe
The Vacuum Circuit Breaker supports clean, sustainable power operation.
- No SF₆ gas – Environmentally responsible solution.
- No fire or explosion risk – Safe under all conditions.
- Complies with IEC standards – Globally approved protection.
The advantages of our product
High arc extinguishing capability
Can quickly cool and divide the arc, significantly shorten the arc extinguishing time, reduce arc energy, suitable for frequent operation scenarios
Intelligent functions
Compatible with intelligent monitoring systems, supporting remote monitoring, fault diagnosis, and early warning, improving operational efficiency
Long mechanical lifespan
Using wear-resistant materials and optimized design, the mechanical life can reach 40000+cycles, far higher than traditional circuit breakers
Low maintenance cost
No need for oil medium maintenance, simplified structural design, reduced maintenance frequency, and lowered operation and maintenance costs
High judgement ability
The breaking capacity can reach up to 150kA (Icu=Ics), and the rated voltage can reach AC1150V, meeting the high voltage and large capacity distribution needs
Brand reputation
Through authoritative certifications such as ISO, IEC, UL, etc., it has been widely used in the global market with guaranteed quality and after-sales support
Get Your Customized Quotation!
We provide customized solutions. Tell us your needs for a precise quote.
Not just a Vacuum Circuit Breaker manufacturer
We not only produce Vacuum Circuit Breaker (VCB), but also offer a range of customized value-added services to meet your project needs. We are committed to pursuing excellence, ensuring that every customer receives personalized attention, expert guidance, and seamless support throughout the entire process of working with us.
Service Consultation
Whether your VCB requirements are basic applications or complex projects, our team can provide professional advice and technical consultation. For high difficulty projects, we provide in-depth engineering support to ensure the selection of the best products and application solutions for you
Product Recommendations
Not sure which VCB is suitable for your system? Our experts will provide free customized advice based on your specific operational and environmental requirements, ensuring that you receive the product that best meets your electrical protection needs.
Service Consultation
If you lack a reliable freight forwarder, we can arrange transportation from the factory to the project site at no additional cost. Our logistics team ensures timely and safe delivery, ensuring that your project proceeds as planned and minimizing downtime and delays.
Installation Support
We provide professional Vacuum Circuit Breaker installation support to ensure safe and efficient setup. Our team assists with site preparation, connection, testing, and operator training, ensuring optimal performance and long-term reliability.
What are our clients saying
Don’t just believe what we say! Take a look at the satisfied customers’ evaluations of air circuit breakers.
“Vacuum Circuit Breakers have significantly improved the safety of our electrical installations.,,
John Doe
Electrical Engineer
“The features of VCBs are revolutionary. They are easy to work with and very efficient.
Tom Johnson
Homeowner
“We trust Vacuum Circuit Breaker for their durability and peace of mind.,,
James Brown
DIY Enthusiast
“We switched to VCBs, and the reliability has been outstanding. Maintenance costs are down!
Maria Smith
Facilities Manager
WEISHO employs the most advanced production equipment and precise testing methods at all times, providing a solid guarantee for the company’s product manufacturing and quality inspection.
All products of the entire series have undergone strict environmental and electrical tests.
At the same time, the company has obtained ISO9001 quality management system and ISO14001 environmental management system certifications.
♥Wide selection
♥OEM Quality
♥100% Satisfaction Guarantee
Looking forward to working with you
Your trusted electrical equipment supplier
FAQ
Learn more about Air Circuit Breakers through these frequently asked questions.
What is a Vacuum Circuit Breaker?
A VCB is an electrical switch that interrupts fault currents using a vacuum to extinguish the arc safely.
How does a Vacuum Circuit Breaker work?
It separates contacts inside a vacuum chamber; the vacuum quickly quenches the arc, preventing damage.
Why use a Vacuum Circuit Breaker?
VCBs offer reliable protection, long life, low maintenance, and high dielectric strength.
What are the main components of a VCB?
Contacts, vacuum interrupter, operating mechanism, and control unit are the core parts.
How often should a Vacuum Circuit Breaker be tested?
Routine inspections every 6–12 months and functional tests as recommended by the manufacturer.
Can VCBs be used in residential or commercial systems?
They are mainly for medium- and high-voltage systems, typically used in industrial or utility networks.
What maintenance does a Vacuum Circuit Breaker require?
VCBs require minimal maintenance; mainly cleaning, lubrication, and periodic mechanical checks.
Are Vacuum Circuit Breakers environmentally friendly?
Yes, they use no oil or SF₆ gas, producing no harmful emissions.
What sizes and voltage ratings do VCBs come in?
VCBs are available for medium to high voltages, commonly from 3.3kV up to 36kV or higher.
Do Vacuum Circuit Breakers come with a warranty?
Yes, most VCBs include manufacturer warranties, typically covering 1–3 years depending on the model.
Can a Vacuum Circuit Breaker be installed outdoors?
Yes, outdoor-type VCBs are available with weatherproof enclosures suitable for harsh environments.
What standards do Vacuum Circuit Breakers comply with?
Most VCBs meet IEC 62271-100, GB1984, and other international standards for medium-voltage switchgear.
How long is the service life of a Vacuum Circuit Breaker?
Typically over 20 years or 10,000–30,000 operations, depending on usage and maintenance.
Can a Vacuum Circuit Breaker be remotely operated?
Yes, VCBs can be equipped with motorized mechanisms and remote control units for automated systems.
