Introducing our cutting-edge VACUUM CIRCUIT BREAKER
Available in current ratings of 630A/1250A/1600A/2000A/2500A/3150A/4000A
Supporting voltage levels of 12kV/24kV/35kV
Model ZN63(VS1) This series of vacuum circuit breaker is engineered as a premier rated voltage isolator Suitable for 12kV-35kV, it serves as a robust 3-phase switch deviceDesigned for indoor use, it integrates seamlessly as essential grid equipment, industrial and mining enterprises, offering superior power equipment control and protection unit. Its unique advantages make it the ideal choice for current requirements rated for frequent operation, as well as handling multiple open short-circuit currents. With its integral layout structure, the breakers utilize a mature spring operation mechanism, offering a simple structure and reliable performance.Its well-reasoned construction ensures all key points are clear, enabling functional units to facilitate easy maintenance.
The ZN63(VS1) vacuum circuit breaker can be installed within the switch either as a fixedor a drawout unit. This flexibility ranges from 630A - 4000A in rated current, with ratings from 20KA-31.5KAfor short-circuit current,offering a truly serialized form.
Core Features
Featuring state-of-the-art Vacuum arc extinguishing technology
Incorporating a high-performance vacuum arc extinguishing chamber,it boasts strong breaking capabilities, eliminating explosion risks, and is environmentally friendly as well as pollution-free.
Its rated short-circuit breaking current can efficiently reach 20kA~31.5kA (model dependent).
With its modular design,
the spring energy storage operating mechanism provides fast opening and closing speeds, with a mechanical lifespan ranging from 10000 to 30000 cycles.
It can be configured with manual or electric control systems (enabling remote automation operation).
For enhanced safety protection,
it boasts a fully enclosed insulation structure with a protection level of IP3X, ensuring it is dustproof and moisture-proof.
Ingeniously crafted with an integrated mechanical interlocking system to safeguard against any potential misoperation, ensuring uncompromised safety and reliability.
Standards
Our product upholds the highest quality by being fully compliant with both international and domestic standards, including the renowned: GB/T 1984 and 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 sophisticated mechanical apparatus designed for the precise control of opening and closing actions in the circuit breaker, ensuring optimal performance and safety.
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Terminals (Fixed Type) → Sturdy electrical interfaces crafted for fixed and secure connections, providing seamless integration into your system's architecture.
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Vacuum Interrupter → The heart of arc-extinguishing technology, featuring precision contacts and a robust ceramic insulator for unmatched reliability and performance.
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Contact Arm (Drawout Type)→ A dynamic, current-carrying marvel, engineered for adaptability and efficiency in drawout circuit breakers, enhancing operational versatility.
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Silver-Plated Copper Contacts→ Meticulously silver-plated to boost conductivity and deliver superior oxidation resistance, ensuring long-lasting, efficient electrical flow.
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Drawout Chassis→ An expertly engineered frame structure, supporting the seamless motion of drawout circuit breaker components, boosting operational smoothness.
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Insulating Cylinder→ A robust insulating housing that envelops the vacuum interrupter, safeguarding its integrity and enhancing overall system safety.
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Aviation Connector→ A high-reliability, quick-disconnect interface designed for aviation-grade performance and durability, ensuring secure connections under pressure.
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Finger Cluster Contacts→ Ingenious multi-finger contact configuration, crafted to maintain stable and reliable electrical connections under varying conditions.
Internal parts
Internal parts

*Please note that the images shown are intended for illustrative purposes only. For precise details and further information, we kindly invite you to reach out to our dedicated customer service team.
Outer packaging:
Robust wooden crates are typically employed to ensure exceptional mechanical strength and durability during transit.
Our custom wooden crates are perfect for accommodating large circuit breakers and ensuring safe international shipping.
Inner packaging:
The circuit breaker is meticulously wrapped with cushioning materials such as foam pads, bubble wraps or pearl cotton, effectively minimizing risks of vibration and impact.
For larger circuit breakers, the packaging employs a strategic layered design, with essential accessories like manuals, tools, and spare partssecurely placed on the top layer.
Our streamlined production line
Transportation
Domestic transportation:
With a designated freight forwarder within China, we ensure efficient delivery of products to specified locations using road transport or domestic express services promptly after production completion.
International transport:
For smaller shipments requiring expedited delivery to specific destinations abroad,we partner with major international express couriers like
DHL, FEDEX, and UPS.
Sea freight/air freight:
For bulk shipments that allow for a flexible timeline, we opt for sea freight. We collaborate with a reliable freight companythat organizes truck pickups and transports goods to the designated port for warehousing.Finally, the shipment is transported via sea to the customer's chosen port, where retrieval is facilitated with a bill of lading.
Mingtuo Electric Mingtuo Electric holds a significant and influential position within the domestic market and is ambitiously advancing into the global stage. Our products have become indispensable across diverse sectors such as construction, industry, and energy. They have earned the enduring trust and preference of numerous prestigious engineering projects.
The company adheres unwaveringly to the principle ofcustomer-centric excellence, prioritizing quality, service, and an esteemed reputation above all.The company is committed to perpetually pursuing the dynamic concept of innovation and sustained development. It boasts an impressive arsenal of technical prowess, cutting-edge production technology, and a wealth of mature experience. Mingtuo Electric's research and development capabilities are renowned for their professionalism and pioneering technological leadership. We possess a complete suite of the most state-of-the-art 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 and performance capabilities, please engage with our customer service experts.
Q: What is the MOQ? Do you support sample ordering?
A: The minimum order quantity is an accessible 1 set, with full support for sample ordering to ensure confidence in your purchase.
Q: How long is the warranty period? How to apply for warranty?
A: Our products are backed by a comprehensive warranty spanning one to two years. You can effortlessly initiate a warranty claim through our responsive customer service team.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We proudly hold CE and RoHS certifications and can readily provide the necessary documentation to assure compliance.
Q: Does the price include tax/shipping?
A: Please note that the price is exclusive of shipping and tax, allowing for transparent and customizable pricing.
Q: What famous clients or project cases have you worked with?
A: Our prestigious clientele includes the State Grid of China, Chint Group, and Xiaomi Group, highlighting our track record of excellence and reliability.