VACUUM CIRCUIT BREAKER
630A/1250A/1600A/2000A/2500A/3150A/4000A
12kV/24kV/35kV
ZN63(VS1) series vacuum circuit breaker designed as a high-performance rated voltage isolator 12kV-35kV, 3-phase switch device, ideal for indoor application as a robust grid equipment, industrial and mining enterprises, ensuring excellent power equipment control and protection unit. Thanks to its distinct advantages, this vacuum circuit breaker is tailor-made for the current requirements rated frequent operation, or multiple open short-circuit current scenarios.With a comprehensive integral layout structure, these breakers are equipped with a mature spring operation mechanism, simple structure and reliable performance. The intelligent construction ensures every component is distinctly defined, allowing functional units to enhance maintenance efficiency.
The ZN63(VS1) vacuum circuit breaker is available in configurations that can be installed within the switchgear as either fixedor withdrawable. With 630A - 4000A rated current capacity ranging from 20KA-31.5KAfor short-circuit current,it provides a truly serialized solution.
Core Features
Vacuum arc extinguishing technology
Adopting cutting-edge high-performance vacuum arc extinguishing chamber, ensuring exceptional breaking capability, no explosion risk, and is environmentally friendly and pollution-free.
The rated short-circuit breaking current can reach a range of 20kA~31.5kA (dependent on the model).
Modular design
The spring energy storage operating mechanism boasts fast opening and closing speeds, coupled with an impressive mechanical lifespan of 10000 to 30000 cycles.
Optionally equipped with manual or electric control (facilitating remote automation operation).
Safety protection
Features a fully enclosed insulation structure with a protection level of IP3X, offering comprehensive dustproof and moisture-proofcapabilities.
Engineered with robust built-in mechanical interlocking systems to effectively prevent any potential operational mishaps.
Standards
Proudly compliant with a range of esteemed international and domestic standards such as GB/T 1984 and IEC 62271-100.
Technical Data for Opening and Closing Coils: Delve into the precision-engineered specifics of our coils, meticulously designed to ensure flawless performance and reliability in every operation.
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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 robust mechanical device engineered for the precise control of opening and closing operations of the circuit breaker, ensuring seamless functionality.
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Terminals (Fixed Type) → A vital electrical interface meticulously designed for secure and stable fixed connections.
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Vacuum Interrupter → The core arc-extinguishing component, expertly crafted to include contacts and a high-quality ceramic insulator for superior performance.
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Contact Arm (Drawout Type)→ A movable current-carrying component integral to drawout circuit breakers, ensuring smooth operation and connectivity.
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Silver-Plated Copper Contacts→ Designed to significantly enhance conductivity while providing exceptional oxidation resistance for long-lasting reliability.
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Drawout Chassis→ A durable frame structure engineered to support the movable parts of drawout circuit breakers, providing stability and strength.
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Insulating Cylinder→ A protective insulating housing that meticulously encapsulates the vacuum interrupter, ensuring safe and efficient operation.
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Aviation Connector→ A premium high-reliability quick-disconnect interface, designed for seamless connectivity and ease of maintenance.
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Finger Cluster Contacts→ An innovative multi-finger contact design, crafted to ensure stable and consistent electrical connection for optimal performance.
Internal Parts
Internal Parts

*Please note that the images showcased are for illustrative purposes exclusively. For precise and tailored details, we warmly invite you to engage with our attentive customer service team, ready to assist you with your every inquiry.
Outer packaging:
We utilize strong wooden boxes to ensure ample mechanical strength and durability.
These sturdy wooden crates are ideal for large circuit breakers and international transport, securing the product safely throughout its journey.
Inner packaging:
The circuit breaker is carefully wrapped using superior buffer materials, such as foam pads, bubble film, and pearl cotton, to effectively guard against vibrations and collisions.
For larger circuit breakers, the packaging may feature a layered design, with essential accessories like manuals, tools, and spare partsconveniently placed on the upper layer for easy access.
Our production line ensures meticulous attention to detail.
Transport
Domestic transportation
For local deliveries within China, if a freight forwarder is specified, we transport products to the desired location using reliable road transportation or prompt domestic express services immediately after production is concluded.
International transport
For small shipments requiring quick dispatch overseas, we trust the expertise of the top three international express couriers to deliver swiftly to the designated location abroad,utilizing
DHL, FEDEX, or UPS for maximum efficiency.
Sea freight/air freight
For bulk orders where time permits, sea freight is the preferred method. We select a reliable freight companythat arranges for trucks to collect the goods, transporting them to the designated port for warehousing.Subsequently, the items are shipped by sea to the customer's specified port, with the customer responsible for collection upon presentation of a bill of lading.
Mingtuo Electric Mingtuo Electric is a powerhouse not just in the domestic market but is also making significant strides internationally. Our products are indispensable across a spectrum of industries including construction, industry, and energy. Trusted by numerous engineering projects, our offerings have become synonymous with reliability and excellence.
The company adheres to the core principle ofcustomer first, quality first, service first, and reputation first,and is unwavering in its pursuit of innovation and development. The company boasts robust technical expertise, cutting-edge production techniques, and a wealth of experience, in research and development. Known for professionalism and technological leadership, we operate the most advanced production, testing, and inspection facilities in China.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For detailed specifications, please reach out to our dedicated customer service team.
Q: What is the MOQ? Do you support sample ordering?
A: We support sample ordering with a minimum order quantity of just 1 set.
Q: How long is the warranty period? How to apply for warranty?
A: Enjoy peace of mind with our products, as they come with a warranty of one to two years. Warranty applications can be made directly with our customer service.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: Absolutely, we hold CE and RoHS certifications and are happy to provide certificates upon request.
Q: Does the price include tax/shipping?
A: Please note, our prices are exclusive of shipping and tax.
Q: What famous clients or project cases have you worked with?
A: We are proud to have collaborated with industry giants such as the State Grid of China, Chint Group, and Xiaomi Group.