VACUUM CIRCUIT BREAKER
630A/1250A/1600A/2000A/2500A/3150A/4000A
12kV/24kV/35kV
ZN63(VS1) The series vacuum circuit breaker is crafted for rated voltage isolator needs, operating within a 12kV-35kV range, as a vital 3-phase switch device.Perfectly engineered for indoor grid equipment, industrial and mining enterprises,empowering power equipment control and protection needs. Thanks to its distinctive advantages, this vacuum circuit breaker is ideally suited for applications that require current requirements rated for frequent operations, or handling multiple openings of short-circuit currents.With an integrated layout structure, these breakers boast a mature spring operation mechanism, simple yet effective structure, and unwavering reliable performance.The thoughtful design ensures every feature is clear, with functional units facilitating smooth maintenance.
The ZN63(VS1) vacuum circuit breaker can be ingeniously installed within the switch as a fixed unit,or as a draw-out unit. Capable of handling 630A - 4000A rated currents, with short-circuit current ratings ranging from20KA-31.5KA,offering a truly serialized form.
Core Features
Vacuum Arc Extinguishing Technology
Our cutting-edge high-performance vacuum arc extinguishing chamberdelivers exceptionally strong breaking capabilities, eliminating explosion risks, and remains environmentally friendly and pollution-freeto ensure safety and eco-compliance.
The rated short-circuit breaking current can impressively reach 20kA~31.5kA (depending on the model), demonstrating versatility and robustness.
Modular Design
A spring energy storage operating mechanism guarantees rapid opening and closing speeds with a mechanical lifespan ranging from 10,000 to 30,000 cycles, ensuring long-term operation.
This product can be outfitted with manual or electric control options, supporting seamless remote automation operation.
Safety Protection at Its Best
Featuring a fully enclosed insulation structure, achieving protection level IP3X, this design is both dustproof and moisture-proofto ensure enduring safety in various environments.
Equipped with an integrated mechanical interlocking system meticulously crafted to avert any potential misoperation, ensuring safety and reliability at all times.
Adherence to Prestigious Standards
Our product proudly complies with both international and domestic standards, reflecting our commitment to excellence and quality assurance, such as GB/T 1984, as well as the distinguished IEC 62271-100,guaranteeing performance that meets the highest industry benchmarks.
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 |
Sophisticated Internal Constitutions:
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Advanced Operating Mechanism→ A meticulously designed mechanical device that precisely controls the opening and closing of the circuit breaker
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Durable Terminals (Fixed Type) → Robust electrical interface crafted for permanent connections
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Innovative Vacuum Interrupter → The essential arc-extinguishing component, meticulously engineered with contacts and a durable ceramic insulator
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Flexible Contact Arm (Drawout Type)→ An essential movable component for current-carrying in drawout circuit breakers, ensuring adaptability and efficiency
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Premium Silver-Plated Copper Contacts→ Crafted to significantly enhance conductivity and resist oxidation, offering superior performance
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Robust Drawout Chassis→ A well-engineered frame structure that provides robust support for the movable elements of drawout circuit breakers
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Reliable Insulating Cylinder→ Protective insulating housing intricately encapsulating the vacuum interrupter for enhanced safety
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Secure Aviation Connector→ A high-reliability, quick-disconnect interface designed for unwavering performance
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Precision-engineered Finger Cluster Contacts→ An innovative multi-finger contact design that ensures a stable and reliable electrical connection
Meticulously Designed Internal Parts
Expertly Crafted Internal Parts

*Please note: The images displayed serve as a visual reference only. For a comprehensive understanding and detailed specifications, we invite you to reach out to our expert customer service team who are ready to assist you with all inquiries.
Outer packaging:
Robust wooden boxes are meticulously crafted to ensure maximum mechanical strength.
These wooden crates are ideal for transporting large circuit breakers or for international shipping.
Inner packaging:
The circuit breaker is carefully wrapped using protective cushioning materials such as foam pads, bubble film or pearl cotton to effectively prevent any vibration or collision.
For larger circuit breakers, the packaging box may feature a layered design, with essential accessories (such as manuals, tools, spare parts) conveniently stored on the upper layer.
Our production line
Transport
Domestic transportation
With a designated freight forwarder in China, we ensure smooth delivery to your specified location through efficient road transportation or domestic express services once production is completed.
International transport
For smaller shipments with tight deadlines needing delivery to a designated international location, we partner with leading international express delivery giants like
DHL, FEDEX, UPS
Sea freight/air freight
For larger quantities where time allows, we opt for sea freight. A reputable freight companywill arrange for trucking to the designated port, handling warehousing. Finally, the shipment will be transported by sea to the customer's chosen port, where they can collect it using a bill of lading.
Mingtuo Electric Proudly holding a pivotal role in the domestic market, Zhejiang Mingtuo Electric Technology Co., Ltd. is ambitiously spreading its wings into the international arena. Our exceptional products seamlessly integrate into sectors like construction, industry, and energy, earning the trust and admiration of esteemed engineering projects worldwide.
The cornerstone of our company's ethos is the unwavering adherence to the principle ofplacing 'customer first, quality first, service first, and reputation first'. At Mingtuo Electric, these are not just words, but the core values that drive our daily operations.This foundational principle fuels our relentless pursuit of innovative development. Our company is armed with impeccable technical expertise, cutting-edge production technology, and a wealth of mature experience, which empowers us to be an industry leader. Renowned for our professionalism and pioneering technological prowess, we boast the most comprehensive set of 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 precise details and tailored assistance, please reach out to our customer service team, who are eager to assist you.
Q: What is the MOQ? Do you support sample ordering?
A: Absolutely. Our minimum order quantity is just 1 set, and we are happy to support sample orders to help you experience our quality first-hand.
Q: How long is the warranty period? How to apply for warranty?
A: We offer a generous warranty period of one to two years. Simply contact our dedicated customer service team to apply.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: Yes, indeed. We possess CE and RoHS certifications and will gladly provide these certificates upon request.
Q: Does the price include tax/shipping?
A: Please note, the listed price excludes shipping and tax.
Q: What famous clients or project cases have you worked with?
A: We are honored to have collaborated with prestigious clients such as the State Grid of China, Chint Group, and Xiaomi Group.