VACUUM CIRCUIT BREAKER
630A/1250A/1600A/2000A/2500A/3150A/4000A
12kV/24kV/35kV
ZN63(VS1) This series of vacuum circuit breakers is expertly crafted for use with rated voltage isolators. Designed for 12kV-35kV, this 3-phase switch device is a marvel of engineering,perfectly suited for indoor grid equipment applications, including industrial and mining enterprises, ensuring robust power equipment control and protection for your operations. Thanks to its exceptional advantages, the vacuum circuit breaker products excel in meeting the current requirements, rated for frequent operations, as well as handling multiple open short-circuit currents. With an integral layout structure, these breakers utilize a matured spring operation mechanism that offers a simple structure and reliable performance,providing clear functions, functional units that are easy to maintain and service.
The ZN63(VS1) vacuum circuit breaker can be installed within a switchboard either as a fixed unitor as a withdrawable unit. Offering a current rating from 630A - 4000A, with rated current spanning 20KA-31.5KAfor short-circuit currents,it presents a truly serialized form.
Core Features
Cutting-edge Vacuum Arc Extinguishing Technology
By adopting a high-performance vacuum arc extinguishing chamber,it possesses a strong breaking ability, eliminating explosion risks and being environmentally friendly and pollution-free.
The rated short-circuit breaking current can effortlessly reach 20kA~31.5kA (depending on the model).
Innovative Modular Design
Equipped with a spring energy storage operating mechanism, offering fast opening and closing speeds along with a mechanical lifespan ranging from 10,000 to 30,000 operations.
It can be seamlessly integrated with manual or electric control options (enabling remote automation operation).
Advanced Safety Protection
Featuring a fully enclosed insulation structure with a protection level of IP3X, it is designed to be dustproof and moisture-proof.
Incorporates built-in mechanical interlocking to prevent any misoperation.
Standards
Our product proudly adheres to both international and domestic standards, ensuring top-notch performance and reliability. It complies with prestigious standards such as GB/T 1984 as well as IEC 62271-100, showcasing our commitment to excellence and innovation.
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 control the seamless opening and closing operations of the circuit breaker, ensuring flawless performance.
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Terminals (Fixed Type) → A robust electrical interface designed for steadfast fixed connections, providing unparalleled reliability and stability.
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Vacuum Interrupter → The core arc-extinguishing component, featuring meticulously crafted contacts and a premium ceramic insulator for superior performance.
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Contact Arm (Drawout Type)→ A versatile, movable current-carrying component, integral to the innovative functionality of drawout circuit breakers.
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Silver-Plated Copper Contacts→ Engineered to perfection to enhance conductivity and bolster oxidation resistance, providing exceptional durability.
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Drawout Chassis→ A robust frame structure meticulously supporting the dynamic, movable parts of drawout circuit breakers.
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Insulating Cylinder→ A premium insulating housing, expertly encapsulating the vacuum interrupter for optimal safety and efficiency.
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Aviation Connector→ A high-reliability, quick-disconnect interface, ensuring seamless and efficient connectivity in any scenario.
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Finger Cluster Contacts→ An advanced multi-finger contact design, ensuring stable and reliable electrical connections for peak performance.
Internal Parts
Internal Parts

*The pictures are for reference only. For a comprehensive understanding of the product, please consult our dedicated customer service team, who are eager to assist and provide all the necessary details.
Outer Packaging Excellence:
Robust and Reliable wooden boxes are meticulously chosen to offer unmatched mechanical strength, ensuring every product is safeguarded with the utmost care.
Our wooden crates are tailored for substantial circuit breakers or international transportation, exhibiting durability and global readiness.
Inner Packaging Precision:
The circuit breaker is lovingly encased with premium buffer materials such as foam pad, bubble film or pearl cotton to ensure complete prevention against vibrations and collisions, providing a cocoon of safety.
For larger circuit breakers, our packaging solutions embrace a sophisticated layered design. Accessories, including manuals, tools, and spare parts, are thoughtfully placed on the upper layer for easy access and convenience.
Our Production Line Logistics:
Tailored Transport Solutions
Domestic Transportation Excellence:
Should there be a designated freight forwarder within China, we seamlessly transport the products to the specified location using road transportation or domestic express delivery, ensuring timely and efficient service upon production completion.
Global Reach with International Transport:
For smaller shipments requiring urgent delivery to a specified international location, we rely on the esteemed services of the three leading international express delivery companies
DHL, FEDEX, and UPS
Optimal Sea and Air Freight Solutions:
For larger consignments where time allows, our choice is sea freight. We partner with a reliable freight company, arranging for trucks to collect goods and transport them to the designated port for warehousing. Subsequently, shipments are expertly managed and transported by sea to the customer's designated port, with pickup facilitated by a bill of lading.
Mingtuo Electric Mingtuo Electric not only commands a pivotal position in the domestic market, but is also making significant inroads into the international arena. Our products are extensively utilized across sectors like construction, industry, and energy, securing the trust and preference of numerous prestigious engineering projects.
The company upholds the fundamental tenet of customer first, quality first, service first, and reputation first,tirelessly pursuing the ethos of innovation and development. Our company boasts robust technical prowess, cutting-edge production technology, and a wealth of experience in research and development, renowned for our professionalism and technological leadership. We are equipped with a comprehensive suite of China's most advanced production, testing, and inspection equipment.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: To discover detailed specifications, kindly consult with our dedicated customer service.
Q: What is the MOQ? Do you support sample ordering?
A: We offer a minimum order quantity of just 1 set, with full support for sample ordering to meet your needs.
Q: How long is the warranty period? How to apply for warranty?
A: Enjoy a generous product warranty ranging from one to two years. Simply reach out to our customer service to apply.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We proudly hold CE and RoHS certifications and are ready to provide 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: Our esteemed clientele includes the State Grid of China, Chint Group, and Xiaomi Group.