VACUUM CIRCUIT BREAKER
Experience the versatility with our range offering: 630A, 1250A, 1600A, 2000A, 2500A, 3150A, and 4000A.
Available in multiple voltage options: 12kV, 24kV, and 35kV.
ZN63(VS1) This series vacuum circuit breaker is engineered as a rated voltage isolator, designed for 12kV-35kV, 3-phase switch devices, suitable for indoor grid applications, tailored for industrial andmining enterprises where power equipment control and protection are paramount. Thanks to its distinct advantages, the vacuum circuit breaker is ideal for environments with high current requirements, frequent operations, or multiple short-circuit current interruptions.With a streamlined integral layout, our breakers employ a mature spring operation mechanism, boasting a simple structure and reliable performance.Its rational design ensures clarity at every point, with functional units that facilitate easy maintenance and servicing.
The ZN63(VS1) vacuum circuit breaker can be installed within switches either in a fixed position or as a draw-out type. Ranging from630A to 4000A, it covers rated current ratings from 20KA to 31.5KA for short-circuit current,ensuring a serialized and adaptable form.Core Features
Vacuum arc extinguishing technology
Implements high-performance vacuum arc extinguishing chambers
with remarkable breakingcapability, eliminating explosion risks, and maintaining an environmentally safe and pollution-free operation. The ratedshort-circuit breaking current can attain between
20kA and 31.5kA (depending on the model selected). Modular design Features a spring energy storage operating mechanism with rapid opening and closing speeds and a mechanical lifespan ranging between 10,000 to 30,000 operations.
Can be equipped with either
manual or electric control systems
including support for remote automation operation for enhanced convenience. safety protection Its fully enclosed insulation structure ensures a high protection level of IP3X, offering dustproof and
moisture-proof capabilities.
Incorporates built-in mechanical interlocking to effectively prevent any misoperation.
Standards
Our product adheres to the highest international and domestic standards, ensuring reliability and safety. The standards include GB/T 1984 as well as the esteemed IEC 62271-100standard.
Technical Data for Opening and Closing Coils: Dive into the core specifics of our state-of-the-art Reliable VCB Electronic Circuit Breaker, where every detail is meticulously crafted to ensure unparalleled efficiency and safety in your electrical systems. Our coils are engineered to provide robust performance, offering the perfect balance of power and precision, vital for seamless operation. Trust in Zhejiang Mingtuo Electric Technology Co., Ltd. for a breakthrough in circuit breaker technology, designed to exceed expectations and elevate your electrical infrastructure.
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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: An In-Depth Exploration
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Operating Mechanism→ The mechanical heart of our circuit breaker, meticulously engineered to masterfully control its opening and closing actions with precision and reliability.
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Terminals (Fixed Type) → Designed as a robust electrical interface, these terminals ensure steadfast fixed connections for seamless operation.
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Vacuum Interrupter → This is the core, an arc-extinguishing marvel that houses contacts within a durable ceramic insulator, ensuring optimal performance.
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Contact Arm (Drawout Type)→ A critical component, the movable current-carrying arm designed specifically for drawout circuit breakers, providing flexibility and efficiency.
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Silver-Plated Copper Contacts→ Our contacts are enhanced with silver plating to significantly boost conductivity while offering superior resistance against oxidation.
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Drawout Chassis→ Architected to perfection, this frame structure serves as a sturdy support for the dynamic parts of our drawout circuit breakers.
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Insulating Cylinder→ Encapsulating the vacuum interrupter is this insulating housing, ensuring safety and reliability in operation.
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Aviation Connector→ Built for reliability, this high-quality quick-disconnect interface assures unmatched durability and ease of use.
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Finger Cluster Contacts→ Featuring a multi-finger contact design, this component guarantees a stable, unwavering electrical connection.
Internal Parts: A Closer Look Inside
Internal Parts: Explore the Intricacies

*Please note: The images provided are illustrative representations. For precise details and specific product inquiries, kindly reach out to our dedicated customer service team who are eager to assist you.
Outer packaging:
Robust and durable wooden boxes are typically employed to provide outstanding mechanical strength and protection.
These wooden crates are especially suitable for large circuit breakers or for secure international transportation.
Inner packaging:
The circuit breaker is encased in protective buffer materials such as foam pads, bubble wrap or pearl cotton to effectively guard against vibration and impact during transit.
For larger circuit breakers, the packaging box may feature a layered design, with accessories (such as manuals, tools, and spare parts) thoughtfully placed on the upper layer for easy access.
Our production line
Transport
Domestic Transportation:
If a specific freight forwarder is designated within China, we ensure the safe delivery of products to the specified location using road transportation or domestic express services, promptly completing delivery once production concludes.
International Transport:
For smaller shipments with urgent deadlines, we select from the premier international express delivery providers to swiftly transport the goods to the designated international location.We partner with the three top-tier international express carriers,
DHL, FEDEX, and UPS,
Sea Freight/Air Freight:
When handling larger quantities where timelines are more flexible, we opt for sea freight. Partnering with a reputable freight company,we arrange for trucks to collect the goods, transporting them safely to the designated port for warehousing.Finally, the goods are shipped via sea to the customer's specified port, where the customer retrieves the shipment using a bill of lading,ensuring a smooth and reliable experience.
Mingtuo Electric Mingtuo Electric is a powerhouse in the domestic market and is increasingly establishing its footprint in the global arena. Our top-tier products have become the cornerstone of numerous industrial, construction, and energy projects, earning widespread trust and admiration from a myriad of engineering endeavors.
The company adheres to the principle of customer first, quality first, service first, reputation first and consistently champions a philosophy of relentless innovation and sustainable growth. The company boasts strong technical strength, advanced production technology, mature experience in research and development, and is renowned for its exceptional professionalism and pioneering technological advancements. Equipped with a comprehensive suite of state-of-the-art production, testing, and inspection facilities in China, Mingtuo stands at the forefront of industry excellence.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For specific product voltage/current range and breaking capacity, please reach out to our dedicated customer service team for comprehensive details.
Q: What is the MOQ? Do you support sample ordering?
A: Our minimum order quantity is a single set, and we are pleased to offer sample ordering to accommodate your needs.
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. To initiate a warranty claim, please contact our customer service team directly for assistance.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We hold CE and RoHS certifications and are delighted to provide these certificates upon request.
Q: Does the price include tax/shipping?
A: Please note that the listed price excludes shipping and tax.
Q: What famous clients or project cases have you worked with?
A: We have proudly collaborated with esteemed clients such as the State Grid of China, Chint Group, and Xiaomi Group, delivering exceptional solutions.