VACUUM CIRCUIT BREAKER
630A/1250A/1600A/2000A/2500A/3150A/4000A
12kV/24kV/35kV
ZN63(VS1) This series of vacuum circuit breakers is expertly engineered for rated voltage isolation 12kV-35kV, offering superior three-phase switch capabilities, ideal for indoor grid equipment, industrial and mining enterprises, ensuring reliable power equipment control and robust protection unit. With unique advantages, these vacuum circuit breakers are perfectly suited for diverse current demands, rated for frequent operations or handling multiple open short-circuit currents.Its integral layout features a mature and simplified structure and trustworthy performance. The well-thought-out design elements ensure clarity in functions, making functional units easy to maintain and service.
The ZN63(VS1) vacuum circuit breaker can be installed within the switch, offering options for both fixedand drawable configurations. Supporting 630A - 4000A current ratings with short-circuit currents from20KA-31.5KA, these breakers are truly versatile in their applications.
Core Features
Cutting-edge Vacuum Arc Extinguishing Technology
Our high-performance vacuum arc extinguishing chambers ensure, strong breaking capability, eradicating explosion risks, while being entirely environmentally friendly and pollution-free.
The rated short-circuit breaking current ranges up to 20kA~31.5kA (model-dependent).
Innovative Modular Design
The spring energy storage mechanism offers rapid opening and closing with a mechanical life span of 10,000 to 30,000 operations.
Can be seamlessly integrated with manual or electric controls (enabling remote automated operations).
Enhanced Safety Features
With a fully enclosed insulation structure and IP3X protection level, providing dustproof andmoisture-proof capabilities.
Incorporates built-in mechanical interlocking to avert operational errors.
Standards
Our product proudly adheres to both international and domestic standards, including: GB/T 1984, alongside IEC 62271-100,ensuring the highest quality and reliability.
Technical Data for Opening and Closing Coils: Dive deep into the intricacies of our high-performance VCB Circuit Breaker! Experience the unparalleled precision and efficiency engineered into each component. Our technical data is meticulously presented to ensure a robust understanding of the operational excellence you can expect from Zhejiang Mingtuo Electric Technology Co., Ltd's High Voltage VCB Circuit Breaker, adaptable across a range of 12kv to 35kv and supporting an impressive current range of 630A to 4000A.
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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 meticulously engineered mechanical device, skillfully controlling the opening and closing sequences of the circuit breaker.
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Terminals (Fixed Type) → Robust electrical interfaces designed for secure and stable fixed connections.
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Vacuum Interrupter → The core of arc-extinguishing technology, featuring high-precision contacts and a durable ceramic insulator to ensure efficient operation.
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Contact Arm (Drawout Type)→ An agile and efficient movable current-carrying component specifically crafted for drawout circuit breakers, facilitating maintenance and versatility.
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Silver-Plated Copper Contacts→ Designed to significantly enhance conductivity while offering superior oxidation resistance, ensuring optimal performance and longevity.
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Drawout Chassis→ A robust frame structure impeccably supporting the movable parts of drawout circuit breakers, ensuring stability and long-term reliability.
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Insulating Cylinder→ A specially designed insulating housing that safely encapsulates the vacuum interrupter, ensuring superior insulation and protection.
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Aviation Connector→ High-reliability quick-disconnect interface, engineered for precision and reliability in demanding applications.
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Finger Cluster Contacts→ Featuring a multi-finger contact design that ensures a stable and consistent electrical connection, enhancing reliability and performance.
Internal parts
Internal parts

*The pictures are solely for illustrative purposes. For comprehensive and detailed information, please reach out to our dedicated customer service team. They will be delighted to assist you with all specifics and ensure you receive accurate information.
Outer packaging:
For unparalleled protection, we use strong wooden boxes that are crafted to provide exceptional mechanical strength during transit.
These robust wooden crates are ideal for the safe transportation of large circuit breakers, especially for international shipping.
Inner packaging:
The circuit breaker is carefully wrapped with cushioning materials such as a foam pad, bubble film or pearl cotton to effectively prevent any potential vibration and collision.
For larger circuit breakers, a thoughtfully designed layered packaging box is used, where accessories (such as manuals, tools, and spare parts) are conveniently placed on the upper layer for easy access.
Our production line
Transport
Domestic transportation
If you have a designated freight forwarder in China, we will seamlessly transport the products to your specified location through road transportation or domestic express delivery, ensuring they reach you swiftly and safely upon production completion.
International transport
For small shipments with pressing deadlines, requiring delivery to a designated location abroad, we partner with the renowned international express delivery giants like
DHL, FEDEX, and UPS
Sea freight/air freight
For larger shipments where timing is flexible, we opt for sea freight. Our collaboration with a suitable freight companyassures that trucks will promptly pick up the cargo and transport it to the required port for warehousing. Finally, the goods will embark on their sea journey, arriving at the customer's designated port, where the customer can retrieve the shipment using a bill of lading.
Mingtuo Electric Proudly holding a prominent stature in the domestic market, Mingtuo Electric is ambitiously making strides in the global arena. Our products, esteemed for their excellence, are extensively employed in pivotal sectors such as construction, industry, and energy. These reliable solutions have earned the unwavering trust and preference of numerous prestigious engineering projects.
The company adheres unwaveringly to the principle ofcustomer first, quality first, service first, reputation first,and is consistently driven by a relentless pursuit of innovation and development. Our company boasts exceptional technical prowess, cutting-edge production technology, and a wealth of invaluable experience, especially in research and development, earning us a reputation for professionalism and technological leadership. Our facilities are equipped with the most advanced production, testing, and inspection equipment available in China.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For comprehensive details, please reach out directly to our knowledgeable 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, and yes, sample ordering is fully supported for your convenience.
Q: How long is the warranty period? How to apply for warranty?
A: Our products come with a reliable warranty period of one to two years. To apply, simply contact our dedicated customer service team.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We proudly possess CE and RoHS certifications and can promptly provide these certificates upon request.
Q: Does the price include tax/shipping?
A: Please note that the 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 working with esteemed clients such as the State Grid of China, Chint Group, and Xiaomi Group.