VACUUM CIRCUIT BREAKER
Available in current ratings: 630A, 1250A, 1600A, 2000A, 2500A, 3150A, and 4000A
Designed for high voltage levels: 12kV, 24kV, and 35kV
ZN63(VS1) This series of vacuum circuit breakers are ideal for use as an isolator for rated voltage 12kV-35kV, crafted for 3-phase switching operationsSuitable for indoor use as a crucial piece of grid equipment, serving both industrialand mining enterprises while providing comprehensive power equipment control and ensure protection for units. Its special advantages make the vacuum circuit breaker products highly suitable for meeting current requirements for ratedfrequent operations, as well as handling multiple short-circuit current interruptions. Thanks to its integral layout structure, the breakers employ a spring operation mechanism that is simple yet reliable,allowing for a reasonable construction that clarifies each functional point, facilitating maintenance with ease.
ZN63(VS1) vacuum circuit breakers can be installed within the switch either in a fixed setup or bedrawn out. With current ratings ranging from 630A to 4000A, and short-circuit current ratings from20KA to 31.5KA,this product line offers a truly serialized form.
Core Features
Vacuum arc extinguishing technology harnessed with
high-performance vacuum arc extinguishing chambers,delivering strong breaking capabilities with no explosion risk, making it environmentally friendly and completely pollution-free.The capabilities of the rated
short-circuit breaking current extend to 20kA to 31.5kA based on model specifics. Modular design features include a spring energy storage operating mechanism that ensures fast opening and closing speeds,
with a mechanical lifespan ranging from
10,000 to 30,000 operations. It can be equipped with either manual or
electric control, supporting remote automation operations for enhanced efficiency. Safety features include a fully enclosed insulation structure,
rated at IP3X for
dustproof and moisture-proof performance,ensuring longevity and reliability.
Featuring a robust mechanical interlocking system, meticulously designed to avert any potential misoperation, ensuring safety and reliability at all times.
Adherence to Standards
Our product proudly aligns with both international and domestic standards, underscoring our commitment to quality and excellence, including: GB/T 1984, as well as IEC 62271-100,providing you with peace of mind and assurance of unmatched performance.
Technical Data for Opening and Closing Coils: Delve into the detailed technical data outlining the robustness and efficiency of the opening and closing coils, critical components that ensure the seamless operation of the Versatile Vacuum Circuit Breaker. Developed with precision by Zhejiang Mingtuo Electric Technology Co., Ltd., these coils are engineered to provide unmatched performance tailored to high voltage system requirements.
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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→ A robust mechanical device meticulously engineered to control the precise opening and closing functions of the circuit breaker.
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Terminals (Fixed Type) → A sophisticated electrical interface designed for seamless and reliable fixed connections.
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Vacuum Interrupter → The core arc-extinguishing marvel, featuring advanced contacts and a durable ceramic insulator, ensuring optimal performance and safety.
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Contact Arm (Drawout Type)→ This vital component is a movable current-carrying element, integral to the operation of drawout circuit breakers.
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Silver-Plated Copper Contacts→ These high-quality contacts significantly enhance conductivity while providing outstanding resistance to oxidation, ensuring longevity.
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Drawout Chassis→ A sturdy frame structure that efficiently supports the movable parts of drawout circuit breakers, ensuring smooth and stable operation.
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Insulating Cylinder→ An exceptional insulating housing that securely encapsulates the vacuum interrupter, providing superior protection.
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Aviation Connector→ A high-reliability, quick-disconnect interface designed for the utmost efficiency and ease of use in demanding environments.
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Finger Cluster Contacts→ Ingeniously engineered with a multi-finger contact design to ensure a stable and secure electrical connection.
Internal Parts
Internal Parts

*Please note that the images provided serve illustrative purposes only. For precise and detailed information, we highly recommend reaching out to our customer service team.
Outer packaging:
Ensuring ultimate protection, our packaging solution includes robust wooden boxes that offer exceptional mechanical strength, seamlessly safeguarding the product.
Wooden crate ideal for accommodating large circuit breakers or for seamless international transport.
Inner packaging:
We meticulously envelop the circuit breaker in premium buffer materials like foam pad, bubble film or pearl cotton to ensure it remains free from vibrations and collisions.
For larger circuit breakers, the packaging box features an innovative layered design, with all accessories including manuals, tools, and spare partsneatly organized on the upper layer for ease of access.
Our production line
Transport
Domestic transportation
Whether you have a designated freight forwarder in China, we ensure seamless delivery by road transportation or domestic express services, promptly completing delivery once production concludes.
International transport
For small shipments with tight deadlines, destined for specific international locations, we collaborate with leading express services like
DHL, FEDEX, and UPS
Sea freight/air freight
In cases of larger quantities, where timing is flexible, we opt for sea freight. We partner with a reliable freight company, arranging for essential trucking services to transport goods to the designated port for warehousing. Subsequently, they embark on a sea voyage to the customer's specified port, where they can be collected using a bill of lading.
Mingtuo Electric Mingtuo Electric stands as a beacon of innovation and excellence, securing its eminent position not just within the domestic sphere but also making significant strides in the international arena. Our products, highly esteemed by numerous engineering projects, are extensively utilized across various sectors such as construction, industry, and energy. This widespread trust and preference underscore our commitment to quality and performance.
The company adheres to the principle ofcustomer first, quality first, service first, reputation firstand relentlessly champions the ideals of innovation and growth. The company possesses robust technical prowess, cutting-edge production processes, and a wealth of seasoned experience in research and development, earning recognition for its expertise and pioneering spirit. Equipped with China's most sophisticated production, testing, and inspection apparatus, it leads with professionalism and technological mastery.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For detailed specifications, please reach out to our dedicated customer service team, who are ready to assist you with comprehensive information.
Q: What is the MOQ? Do you support sample ordering?
A: Our minimum order quantity is just 1 set, proudly offering flexibility with sample orders to meet your needs.
Q: How long is the warranty period? How to apply for warranty?
A: We offer a warranty period ranging from one to two years. For warranty claims, simply contact our responsive customer service.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: Yes, we are certified with CE and RoHS and are pleased to provide these certificates upon request.
Q: Does the price include tax/shipping?
A: Please note, our prices are exclusive of shipping and tax.
Q: What famous clients or project cases have you worked with?
A: Our distinguished clientele includes the State Grid of China, Chint Group, and Xiaomi Group, each a testament to our quality and reliability.