VACUUM CIRCUIT BREAKER
630A/1250A/1600A/2000A/2500A/3150A/4000A
12kV/24kV/35kV
ZN63(VS1) series vacuum circuit breaker is a highly reliable option utilized for rated voltage isolation purposes 12kV-35kV, offering top-tier performance as a 3-phase switch device, suitable for indoor grid applications, catering to industrial and mining enterprises, ensuring effective power equipment control and protection . Thanks to its unique advantages, this vacuum circuit breaker is perfectly suited to the current technical requirements for frequent operations and repeated short-circuit current interruptions. With an integral layout structure, this breaker utilizes a matured spring operation mechanism, ensuring a simple yet robust design and reliable performance. Its well-thought-out construction provides clear demarcation among functional units to facilitate maintenance.
ZN63(VS1) vacuum circuit breaker can be installed in a fixed position within the switch, or its configuration can allow it to be easily drawn. Featuringrated current options from 630A - 4000A and short-circuit current capabilities ranging from 20KA-31.5KA, it presents a truly serialized form.
Core Features
Vacuum arc extinguishing technology
Implemented with an advanced vacuum arc extinguishing chamber, this technology offers remarkable breaking strength, no explosion hazards, and an eco-friendly, pollution-free operation .The rated
short-circuit breaking current is capable of reaching between 20kA and 31.5kA (depending on the model).
Modular design
The spring energy storage operating mechanism boasts rapid opening and closing speeds with a mechanical lifespan extending between 10,000 to 30,000 cycles.
It can be conveniently equipped with manual or electric controls (with support for remote automation operation).
safety protection
Featuring a fully enclosed insulation structure with protection level IP3X, it is both dustproof and moisture-proof.
Built-in mechanical interlocking safeguards against operational errors, ensuring maximum safety.
Standards
Our robust product is meticulously crafted to align with both international and domestic standards, such as GB/T 1984 and IEC 62271-100, ensuring unparalleled reliability and performance.
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 |
Exploring the Internal Constitutions:
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Sophisticated Operating Mechanism→ A precision-engineered mechanical device ensuring seamless control over the opening and closing functionalities of the circuit breaker.
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Terminals (Fixed Type) → Robust electrical interface meticulously designed for secure and stable fixed connections.
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Advanced Vacuum Interrupter → This state-of-the-art core arc-extinguishing component is equipped with high-quality contacts and ceramic insulator for optimal performance.
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Innovative Contact Arm (Drawout Type)→ A dynamic, movable current-carrying component specifically crafted for drawout circuit breakers, ensuring reliable operation.
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Premium Silver-Plated Copper Contacts→ Designed to significantly enhance conductivity and bolster resistance against oxidation, ensuring longevity and efficiency.
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Durable Drawout Chassis→ Engineered frame structure designed to support the movable parts of drawout circuit breakers, providing strength and stability.
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Protective Insulating Cylinder→ A robust insulating housing that encapsulates the vacuum interrupter, ensuring safety and reliability.
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Reliable Aviation Connector→ High-reliability quick-disconnect interface offering exceptional performance and easy connectivity.
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Finger Cluster Contacts→ Innovative multi-finger contact design that ensures a stable and consistent electrical connection.
Intricate Internal Parts
Intricate Internal Parts

*Please note that the images displayed are for illustrative purposes only. For precise details and specifications, we warmly invite you to reach out to our dedicated customer service team, who are eager to assist you with any inquiries.
Outer Packaging Details:
Robust and Resilient wooden boxes are generally employed to ensure ample mechanical strength, safeguarding the contents with utmost care.
A wooden crate is particularly suitable for housing substantial circuit breakers or for international shipments.
Inner Packaging Strategy:
The circuit breaker is cocooned with cushioning materials, including foam pads, bubble wrap , or pearl cotton , ensuring protection against vibrations and collisions.
For larger circuit breakers, the packaging box features a tiered design, accommodating accessories such as manuals, tools, and spare partson the upper tier.
Our Streamlined Production Line
Transportation Solutions
Domestic Shipping Options
For customers with a specified freight forwarder in China, we seamlessly transport the products to the desired location using road transport or domestic express shipping, promptly following production completion.
International Transport Services
In scenarios where goods are limited in quantity and time-sensitive, requiring delivery to an international destination, we prioritize the use of leading international express services, including
DHL, FEDEX, and UPS.
Sea Freight/Air Freight Options
For bulk shipments where time allows, we opt for sea freight, collaborating with a reliable freight company, which coordinates truck pickups to transfer goods to the designated port for warehousing.Finally, they are shipped by sea to the customer's appointed port, where the customer can retrieve their goods using a bill of lading..
Mingtuo Electric Mingtuo Electric not only commands a pivotal position in the domestic market but is also making significant inroads internationally. Our high-quality products are integral to sectors such as construction, industry, and energy, earning the trust and admiration of numerous prestigious engineering projects.
The company adheres to the principle of customer first, quality first, service first, reputation first and consistently pursues the path of innovation and development. Mingtuo Electric boasts exceptional technical prowess, cutting-edge production techniques, and seasoned experience in research and development. Renowned for our professionalism and technical leadership, we are equipped with an 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 comprehensive details, we invite you to consult our dedicated customer service team.
Q: What is the MOQ? Do you support sample ordering?
A: Yes, the minimum order quantity is 1 set, and we are pleased to support sample ordering.
Q: How long is the warranty period? How to apply for warranty?
A: Our products come with a warranty period ranging from one to two years. Warranty applications can be made directly through our customer service.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We possess CE and RoHS certifications and are able to provide these certificates upon request.
Q: Does the price include tax/shipping?
A: Please note that our prices do not include shipping or tax.
Q: What famous clients or project cases have you worked with?
A: Among our esteemed clients are State Grid of China, Chint Group, and Xiaomi Group.