VACUUM CIRCUIT BREAKER
630A/1250A/1600A/2000A/2500A/3150A/4000A
12kV/24kV/35kV
ZN63(VS1) series vacuum circuit breaker is used for rated voltage isolator 12kV-35kV, 3-phase switch device, the indoor as grid equipment, industrial and miningenterprises, power equipment control and protection unit. Due to the specialadvantage, vacuum circuit breaker products suitable for the current requirementsrated frequent operation, or multiple open short-circuit current.By the integral layout structure, breakers used spring operation mechanism ismature, simple structure and reliable performance. The reasonable construction,make each points clear, functional units to decorate maintenance.
ZN63(VS1) vacuum circuit breaker in the form of installed within theswitch can be fixed, also can be drawn. From 630A - 4000A rated current ratingfrom 20KA-31.5KAshort-circuit current, real serialized form.
Core Features
Vacuum arc extinguishing technology
Adopting high-performance vacuum arc extinguishing chamber, strong breaking ability, no explosion risk, environmentally friendly and pollution-free.
The rated short-circuit breaking current can reach 20kA~31.5kA (depending on the model).
Modular design
The spring energy storage operating mechanism has a fast opening and closing speed and a mechanical lifespan of 10000 to 30000 times.
Can be equipped with manual or electric control (supporting remote automation operation).
safety protection
Fully enclosed insulation structure, protection level IP3X, dustproof and moisture-proof.
Built in mechanical interlocking to prevent misoperation.
Standards
Our Reliable High Voltage Vacuum Circuit Breaker VCB 35kV ICU 20-31.5kA is meticulously engineered to align with both international and domestic standards, ensuring superior quality and performance. This product is compliant with GB/T 1984, as well as IEC 62271-100,the industry benchmarks for excellence and reliability.
Technical Data for Opening and Closing Coils: Dive into the intricate details of our state-of-the-art opening and closing coils, designed with precision engineering to ensure optimal performance and dependability.
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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 finely crafted mechanical device that expertly controls the opening and closing of the circuit breaker, ensuring optimal performance and safety.
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Terminals (Fixed Type) → Robust electrical interface designed for seamless and reliable fixed connections, providing strong power flow.
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Vacuum Interrupter → The core arc-extinguishing component featuring high-quality contacts and a durable ceramic insulator for superior reliability.
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Contact Arm (Drawout Type)→ A precision-engineered, movable current-carrying component tailored for drawout circuit breakers, offering flexibility and efficiency.
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Silver-Plated Copper Contacts→ Engineered with silver-plated copper, these contacts enhance conductivity and offer excellent oxidation resistance for prolonged durability.
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Drawout Chassis→ A meticulously designed frame structure supporting the movable components of drawout circuit breakers, facilitating ease of use and maintenance.
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Insulating Cylinder→ A protective insulating housing that securely encapsulates the vacuum interrupter, ensuring safe and efficient operation.
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Aviation Connector→ High-reliability quick-disconnect interface designed for superior connectivity, facilitating swift and secure connections.
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Finger Cluster Contacts→ An innovative multi-finger contact design that guarantees stable and consistent electrical connection, enhancing reliability.
Internal Parts
Internal Parts

*Note: The pictures provided are for illustrative purposes only. For comprehensive and detailed information, we invite you to consult our dedicated customer service team, who are ready to assist you with all the specifics you may require.
Robust Outer Packaging:
Durable and Resilient wooden boxes are typically employed to ensure maximum mechanical strength and protection.
Wooden crates are ideal for accommodating large circuit breakers and international shipments.
Secure Inner Packaging:
The circuit breaker is carefully wrapped with protective materials such as foam pads, bubble film or pearl cotton to effectively prevent any vibration and collision.
For larger circuit breakers, a layered packaging design is employed, with accessories (including manuals, tools, and spare parts) conveniently placed on the top layer for easy access.
Our Efficient Production Line
Seamless Transport Solutions
Domestic Transportation:
When a freight forwarder is designated in China, we ensure timely delivery to the specified location using road transportation or domestic express services post-production.
International Transport Options:
For smaller shipments with tight timelines that need to reach an international destination, we collaborate with leading global couriers such as
DHL, FEDEX, and UPS
for swift transportation.
For bulk shipments where timing is more flexible, sea freight is the optimal choice. We partner with a reliable freight company, which arranges trucks for the collection and delivery of goods to the specified port for warehousing.Finally, the goods are shipped by sea to the customer's designated port, where they can be collected using a bill of lading.
Mingtuo Electric Zhejiang Mingtuo Electric Technology Co., Ltd. not only holds a significant position within the domestic market but is also ambitiously reaching out to the global stage. Our products are pivotal in fields such as construction, industry, and energy, earning widespread acclaim and trust from numerous prestigious engineering projects around the world.
The company adheres to the principle ofcustomer first, quality first, service first, reputation firstand is committed to continually advancing our ethos of innovation and development. The company boasts strong technical strength, cutting-edge production capabilities, and a wealth of experience in research and development. We are renowned for our professionalism and leadership in technology, equipped with an array of the most sophisticated production, testing, and inspection machinery available in China.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For comprehensive details, please reach out to our customer service team who are ready to assist you.
Q: What is the MOQ? Do you support sample ordering?
A: The minimum order quantity is just 1 set, and yes, we do support sample ordering to meet your needs.
Q: How long is the warranty period? How to apply for warranty?
A: Our products come with a warranty spanning one to two years. For warranty claims, please directly contact our customer service team for prompt assistance.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: Indeed, we possess CE and RoHS certificates and are more than willing to provide these upon request.
Q: Does the price include tax/shipping?
A: Please note that the price does not include shipping or tax.
Q: What famous clients or project cases have you worked with?
A: We are proud to collaborate with prominent clients like the State Grid of China, Chint Group, and Xiaomi Group, among others.