VACUUM CIRCUIT BREAKER
630A/1250A/1600A/2000A/2500A/3150A/4000A
12kV/24kV/35kV
ZN63(VS1) series vacuum circuit breaker is ingeniously crafted for rated voltage isolation 12kV-35kV, a robust 3-phase switch device, perfect for indoor grid equipment, industrial and mining enterprises, power equipment control and protection unit. Thanks to its unparalleled advantages, these vacuum circuit breaker products are ideal for meeting current requirements rated for frequent operations, or multiple opening short-circuit currents. The integral layout structure of these breakers, utilizing a mature spring operation mechanism, is simple in design and ensures reliable performance. The well-thought-out construction makes each component easily accessible for functional unit maintenance. maintenance.
ZN63(VS1) vacuum circuit breaker can be installed within the switch cabinet as a fixed unit, or it can be easily drawn out. Available with rated current ranging from 630A - 4000A and short-circuit current ratings from 20KA-31.5KAensuring a real serialized form., ensuring a real serialized form.
Core Features
Advanced Vacuum Arc Extinguishing Technology
Utilizing a high-performance vacuum arc extinguishing chamber, offering superior breaking capability, with no explosion risk, making it environmentally friendly and free from pollution.
The rated short-circuit breaking current has the potential to reach 20kA~31.5kA (subject to model specifications).
Modular Design
The spring energy storage operating mechanism boasts a rapid opening and closing speed with a mechanical lifespan stretching from 10,000 to 30,000 cycles.
It can be equipped with either manual or electric control systems (facilitating remote automation operations).
Safety and Protection
Featuring a fully enclosed insulation structure, the protection level is IP3X, ensuring it is both dustproof and moisture-proof.
Ingeniously designed with built-in mechanical interlocking, this circuit breaker ensures exceptional safety by effectively preventing any possible misoperation.
Adherence to Standards
Exceedingly compliant with both international and domestic standards, ensuring unparalleled quality and reliability, such as GB/T 1984, in addition to IEC 62271-100,demonstrating our commitment to excellence.
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 device that meticulously controls the opening and closing of our powerful circuit breaker, ensuring precision and safety.
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Terminals (Fixed Type) → Robust electrical interface designed for steadfast fixed connections, guaranteeing reliability and performance.
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Vacuum Interrupter → This core arc-extinguishing marvel, with its advanced contacts and ceramic insulator, stands as the heart of our circuit-breaking technology.
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Contact Arm (Drawout Type)→ A pivotal, movable component ensuring seamless current flow within drawout circuit breakers, enhancing operational flexibility.
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Silver-Plated Copper Contacts→ Designed to significantly enhance conductivity and oxidation resistance, these contacts are integral for superior electrical performance.
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Drawout Chassis→ The robust frame structure that supports and facilitates the dynamic movement of parts in drawout circuit breakers.
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Insulating Cylinder→ This crucial insulating housing efficiently encapsulates the vacuum interrupter, offering unparalleled protection and durability.
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Aviation Connector→ Engineered for high-reliability, this quick-disconnect interface ensures swift and secure connectivity.
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Finger Cluster Contacts→ Featuring a multi-finger contact design, these guarantee a stable and unwavering electrical connection.
Internal parts
Internal parts

*Please Note: The images provided serve as an illustrative guide. For comprehensive details and further assistance, our dedicated customer service team is ready to help you with all your inquiries.
Outer packaging:
Robust wooden crates are typically employed to ensure exceptional mechanical strength.
Wooden crates are ideal for transporting large circuit breakers or for international shipments.
Inner packaging:
Envelop the circuit breaker with protective cushioning materials such as foam pads, bubble wrap or pearl cotton to safeguard against vibrations and impacts.
For larger circuit breakers, the packaging may feature a tiered design, with accessories (including manuals, tools, spare parts) conveniently placed on the top layer.
Our production line
Transport
Domestic transportation
If there is a designated freight forwarder in China, we transport products to the specified location via road transport or domestic express delivery once production is complete.
International transport
For small shipments with tight schedules destined for locations abroad, we rely on the leading international courier services:
DHL, FEDEX, UPS
Sea freight/air freight
For larger shipments where time is not a constraint, sea freight is our preferred choice. We collaborate with a reliable freight company, which coordinates truck pickups and delivery to the designated port for warehousing. Subsequently, the goods are shipped by sea to the customer's specified port. The customer is responsible for collecting the goods with a bill of lading.
Mingtuo Electric Mingtuo Electric not only commands a significant presence in the domestic market but is also ambitiously advancing its footprint internationally. Our products are celebrated across diverse sectors such as construction, industry, and energy, consistently earning the trust and admiration of numerous prestigious engineering projects.
The company adheres unwaveringly to the principle ofprioritizing our customers, maintaining unparalleled quality, delivering exceptional service, and upholding a stellar reputation at all times.as well as constantly embracing a visionary approach to innovation and growth. Our company thrives on robust technical capabilities, cutting-edge production technologies, and rich, seasoned experience in research and development. We are renowned for our expertise and technological prowess, boasting a full 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: For comprehensive details, please reach out to our dedicated customer service team.
Q: What is the MOQ? Do you support sample ordering?
A: The minimum order quantity is a single set, and yes, we do support sample ordering to ensure your full satisfaction.
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. Apply effortlessly through our customer service.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We proudly possess CE and RoHS certifications and are able to provide these certificates for your records.
Q: Does the price include tax/shipping?
A: Pricing is exclusive of shipping and taxes.
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.