VACUUM CIRCUIT BREAKER
630A/1250A/1600A/2000A/2500A/3150A/4000A
12kV/24kV/35kV
ZN63(VS1) This series of vacuum circuit breakers is adeptly designed for rated voltage isolators ranging from 12kV to 35kV, making them an ideal 3-phase switch device, perfectly suited for indoor installations as crucial grid equipment, in industrial and mining enterprises, offering exceptional power equipment control and unparalleled protection unit. Thanks to its unique advantages, our vacuum circuit breaker products meet the stringent requirements of rated frequent operations, or multiple open short-circuit currents.The integrated layout structure makes these breakers reliable, utilizing a mature spring operation mechanism, characterized by its simple structure and outstanding reliable performance.With a well-thought-out construction, it makes each functional point explicit, allowing functional units to facilitate maintenance effortlessly.
The ZN63(VS1) vacuum circuit breaker can be installed within the switch, either as a fixed unitor can be drawn as needed. Ranging from 630A to 4000A rated current, with a rating from 20KA to 31.5KAshort-circuit current,this product embodies a real serialized form.
Core Features
Vacuum arc extinguishing technology: The use of high-performance
vacuum arc extinguishing chambers ensures superior performance,providing a strong breaking ability with no risk of explosion. It is environmentally friendly and completely pollution-free, making it a safe choice for all.The rated
short-circuit breaking current is impressive, reaching levels as high as 20kA to 31.5kA (dependent on the specific model).
Modular design features include a
spring energy storage operating mechanism, which offers rapid opening and closing speeds and a mechanical lifespan of 10,000 to 30,000 cycles.
This breaker can be equipped with manual or electric control systems (supporting remote automation operation for added convenience).
Safety protection is ensured with
a fully enclosed insulation structure, offering IP3X level protection, making it dustproof and moisture-proof,ensuring long-lasting reliability.
Equipped with sophisticated mechanical interlocking mechanisms, this system is meticulously designed to prevent any inadvertent misoperation, ensuring safety and reliability at every step.
Standards
Our product proudly meets the stringent requirements set forth by both international and domestic standards, including the highly-regarded GB/T 1984, as well as 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→ A precise mechanical device expertly engineered to govern the opening and closing operations of the circuit breaker, ensuring optimal performance and reliability.
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Terminals (Fixed Type) → Robust electrical interfaces designed for secure and enduring fixed connections, facilitating seamless integration.
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Vacuum Interrupter → The essential core arc-extinguishing component equipped with premium contacts and a durable ceramic insulator, delivering unparalleled efficiency and safety.
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Contact Arm (Drawout Type)→ A sophisticated, movable current-carrying component integral to drawout circuit breakers, providing flexibility and enhanced operational efficiency.
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Silver-Plated Copper Contacts→ Superior contacts expertly silver-plated to significantly enhance conductivity and resist oxidation, ensuring durability and performance.
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Drawout Chassis→ A robust frame structure designed to support the dynamic movable parts of drawout circuit breakers, enhancing mechanical stability and ease of maintenance.
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Insulating Cylinder→ A high-quality insulating housing meticulously crafted to encapsulate the vacuum interrupter, ensuring safety and reliability.
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Aviation Connector→ A high-reliability quick-disconnect interface, ensuring seamless connectivity and operational excellence in demanding environments.
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Finger Cluster Contacts→ An advanced multi-finger contact design crafted to ensure stable and consistent electrical connections, maximizing reliability.
Internal parts
Internal parts

*Please note: The images displayed are solely for illustrative purposes. For comprehensive details and specific inquiries, we encourage you to reach out to our dedicated customer service team for personalized assistance.
Outer packaging:
Robust and reliable wooden crates are typically employed to ensure exceptional mechanical strength.
Wooden crates are ideal for accommodating large circuit breakers, particularly during international transit.
Inner packaging:
Envelop the circuit breaker in protective cushioning materials such as foam padding, bubble wrap or pearl cotton to safeguard against vibrations and impacts.
For larger circuit breakers, the packaging box design may include multiple layers, where accessories (such as manuals, tools, and spare parts) are strategically positioned on the top layer.
Our meticulously organized production line
Transport
Domestic transportation
Should there be a designated freight forwarder within China, we ensure seamless delivery to the specified location through road transportation or domestic express services promptly upon production completion.
International transport
For smaller shipments with tight schedules requiring overseas delivery to a specified international destination, we entrust the expertise of leading international express delivery providers such as
DHL, FEDEX, and UPS.
Sea freight/air freight
For bulk shipments where time isn't a constraint, we opt for sea freight. Our collaboration with a reputable freight companyensures efficient coordination of truck pickups and transportation to the designated port for secure warehousing. Subsequently, the goods are transported via sea to the customer's specified port, with pickup contingent on a bill of lading.
Mingtuo Electric Zhejiang Mingtuo Electric Technology Co., Ltd. is not merely a domestic leader but is also making significant strides in the international arena. Our innovative solutions are trusted across sectors such as construction, industry, and energy, earning us the confidence and endorsement of numerous high-profile engineering projects worldwide.
The company adheres to the principle of customer first, quality first, service first, reputation first,and relentlessly pursues a philosophy centered on innovation and growth. We boast exceptional technical prowess, state-of-the-art production techniques, and a wealth of experience in research and development. Our reputation for professionalism and technological advancement is supported by our comprehensive array of the most sophisticated production, testing, and inspection equipment available in China.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For detailed specifications, please consult our dedicated customer service team who are eager to assist you.
Q: What is the MOQ? Do you support sample ordering?
A: Our minimum order quantity is one set, and we indeed offer the convenience of sample ordering to ensure your complete satisfaction.
Q: How long is the warranty period? How to apply for warranty?
A: We offer a generous warranty period ranging from one to two years. For warranty services, simply reach out to our responsive customer service team.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: Yes, we proudly hold CE and RoHS certifications and are pleased to provide these certifications upon request.
Q: Does the price include tax/shipping?
A: Please note that the quoted price is exclusive of shipping and tax.
Q: What famous clients or project cases have you worked with?
A: We have had the privilege to collaborate with renowned clients and projects such as the State Grid of China, Chint Group, and Xiaomi Group.