VACUUM CIRCUIT BREAKER
630A/1250A/1600A/2000A/2500A/3150A/4000A
12kV/24kV/35kV
ZN63(VS1) Series vacuum circuit breaker is expertly designed for top-tier performance in rated voltage isolator applications. 12kV-35kV, 3-phase switch deviceperfectly suited for indoor use as reliable grid equipment for industrial and mining enterprises, ensuring robust power equipment control and protection unit. Its unique advantages make it an ideal choice for meeting current requirements rated for frequent operation, or handling multiple open short-circuit currents.With an integral layout structure, breakers using the mature spring operation mechanism offer a simple structure and exceptional, reliable performance.The rational construction ensures transparency at each point, with functional units expertly designed to facilitate maintenance and decoration.
ZN63(VS1) vacuum circuit breaker is ingeniously installed within the switch, offering options to be fixedor easily drawn. It supports 630A - 4000A rated current with a range of 20KA-31.5KAshort-circuit current ratings,presenting a truly serialized form.
Core Features
Advanced Vacuum Arc Extinguishing Technology
With a high-performance vacuum arc extinguishing chamber, it boasts strong breaking capabilities, ensuring no explosion risk, and is environmentally conscious and pollution-free.
The rated short-circuit breaking current can achieve 20kA~31.5kA (model-dependent).
Innovative Modular Design
The spring energy storage operating mechanism features rapid opening and closing speeds, with a mechanical lifespan spanning 10,000 to 30,000 operations.
Offers versatility with manual or electric control options (supporting seamless remote automation operations).
Comprehensive Safety Protection
Fully enclosed insulation structure ensuring protection level IP3X, offering both dustproof and moisture-proofproperties.
Built-in mechanical interlocking to effectively prevent any misoperation.
Standards
Our VCB High Voltage Circuit Breaker is engineered with precision and complies with both international and domestic standards, crafted to meet the expectations of the most discerning professionals. GB/T 1984 and IEC 62271-100.
Technical Data for Opening and Closing Coils
/ |
Closing Coil |
Opening Coil |
Remarks |
Rated Operating Voltage(V) |
DC220,DC110
AC220,AC110 |
DC220,DC110
AC220,AC110 |
Opening coil current must not be less than 30% of the rated
operating voltage. |
Coil Power(W) |
245 |
320 |
Normal Operating Voltage Range |
85% - 110% of Rated Voltage |
85%-120% of Rated Voltage |
Internal Constitutions:
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Operating Mechanism→ This sophisticated mechanical device governs the precise opening and closing sequences of the circuit breaker, ensuring reliability and safety.
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Terminals (Fixed Type) → These robust electrical interfaces are designed for secure and stable fixed connections, enhancing system integrity.
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Vacuum Interrupter → The core arc-extinguishing marvel, equipped with superior contacts and a durable ceramic insulator, providing unmatched arc suppression.
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Contact Arm (Drawout Type)→ A pivotal, movable component in drawout circuit breakers, engineered to carry current efficiently with flexibility.
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Silver-Plated Copper Contacts→ These contacts are crafted to enhance conductivity and resist oxidation, ensuring longevity and performance excellence.
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Drawout Chassis→ A robust frame structure that diligently supports the dynamic and movable parts of drawout circuit breakers.
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Insulating Cylinder→ This insulating housing meticulously encapsulates the vacuum interrupter, guaranteeing safety and insulation integrity.
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Aviation Connector→ A high-reliability, quick-disconnect interface engineered for seamless connections in demanding environments.
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Finger Cluster Contacts→ Featuring a multi-finger contact design, this component ensures reliable and stable electrical connections under various conditions.
Internal Parts
Internal Parts

*Please note: The images provided are for illustration purposes only. For comprehensive and detailed information, we invite you to reach out to our knowledgeable customer service team who are ready to assist with your inquiries and provide the precise details you seek.
Outer Packaging:
Robust and Durable wooden crates are meticulously crafted to ensure exceptional mechanical strength.
These wooden crates provide an ideal solution for the secure transportation of large circuit breakers, especially for international shipments.
Inner Packaging:
The circuit breaker is enveloped with premium buffer materials such as foam padding, bubble wrap or pearl cotton to effectively prevent any risk of vibration or collision.
In the case of larger circuit breakers, the packaging box features an innovative layered design, with essential accessories such as manuals, tools, and spare partsthoughtfully positioned on the upper layer.
Our Efficient Production Line
Transportation
Domestic Transportation
For shipments within China, if a designated freight forwarder is specified, we ensure seamless delivery to the specified location using road transportation or domestic express services, promptly after production completion.
International Transportation
For smaller shipments with urgent timelines requiring delivery to international destinations, we collaborate with leading international express companies like
DHL, FEDEX, and UPS
Sea Freight/Air Freight
For substantial shipments without immediate urgency, we opt for sea freight. We meticulously select a reliable freight companyto arrange truck pickups, ensuring the goods are safely transported to the designated port for warehousing.Ultimately, they will be shipped by sea to the customer's specified port, where the customer can collect the goods using a bill of lading.
Mingtuo Electric Firmly rooted in the domestic landscape, Mingtuo Electric is dynamically expanding its horizons globally. Our products are sought after in diverse sectors such as construction, industry, and energy, earning the trust and preference of numerous prestigious engineering ventures.
The company adheres to the principle of'customer first, quality first, service first, reputation first'and constantly pursues the concept of innovation and development. The company boasts remarkable technical expertise, cutting-edge production technology, and seasoned experience in research and development. Mingtuo Electric is lauded for its professionalism and technological prowess, equipped with a comprehensive suite of advanced production, testing, and inspection facilities within China.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For detailed specifications, please reach out to our customer service team.
Q: What is the MOQ? Do you support sample ordering?
A: We offer a flexible minimum order quantity of just 1 set, with the option for sample orders available.
Q: How long is the warranty period? How to apply for warranty?
A: Our products come with a warranty period of one to two years. Warranty claims can be made directly through our customer service.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: Yes, we hold CE and RoHS certifications and can furnish the relevant certificates upon request.
Q: Does the price include tax/shipping?
A: Kindly note that the listed price is exclusive of shipping and tax.
Q: What famous clients or project cases have you worked with?
A: We have had the privilege of collaborating with esteemed clients such as the State Grid of China, Chint Group, and Xiaomi Group.