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Miniature Circuit Breaker (MCB)
Zhejiang Junwei Electric Co., Ltd.
Zhejiang Junwei Electric Co., Ltd.

JUNW JVB1-63 RCBO Mniniature Circuit Breaker

JVB Series Miniature Circuit Breakers (RCBO)
1.Core Electrical Performance
Tailored for AC 50Hz power networks, the JVB1-63 RCBO operates at 230V/440V rated voltage with a 6A-63A adjustable rated current range, catering to diverse load demands. It features a 6kA breaking capacity, enabling rapid interruption of fault currents to protect circuits and connected equipment from damage.
2.Flexible Configuration & Installation
Offers versatile 1P/2P/3P/4P pole options and selectable B/C/D tripping curves, adapting to scenarios from residential wiring to industrial setups. Adopting modular mounting design, it can be seamlessly integrated into standard distribution boards, simplifying installation and system expansion.
3.Safety & Durability
Equipped with IP20 ingress protection to prevent accidental contact with live parts, alongside core short-circuit and overload protection to mitigate electrical risks. The flame-retardant casing is crafted from PA66/ABS+PC materials, ensuring excellent heat resistance, mechanical strength, and long-term stability.
4.Global Compliance & Application
Fully compliant with IEC60898-1 international standard and certified by CE/ISO9001, meeting global safety benchmarks. It is ideal for industrial and PV solar system applications, with the JUNW brand supporting OEM/ODM customization to fulfill diverse market and project needs.

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Zhejiang Junwei Electric Co., Ltd.
Zhejiang Junwei Electric Co., Ltd.
Zhejiang Junwei Electric Co., Ltd. upholds the core values of quality, innovation and integrity. Over the past 19 years, these principles have enabled us to grow into a leading manufacturing and trading enterprise and drive our commitment to delivering outstanding products.
Since the company’s founding, Zhang Shuping, founder of Junwei Electric, has always emphasized: “If people and enterprises in French-speaking African countries need electricity, they need the products and services we provide. Whether for new or existing demand, we wholeheartedly supply them with the products and services they require.” Providing customers with high-quality products supported by professionally skilled staff is the mission and passion of the Junwei Electric family.
Zhejiang Junwei Electric Co., Ltd. specializes in providing integrated solutions. Since 2007, Junwei Electric has kept a simple promise: to offer the most reliable products, the most reliable team and the most reliable services at the most competitive prices. With abundant inventory and a strong supplier network, Junwei is committed to delivering a hassle-free experience for customers. All products are certified for safety and reliability, ready for immediate operation.
Quality, Innovation, Integrity – Your Trusted Electrical Partner
We focus on the R&D and production of high and low voltage electrical products, including circuit breakers, meter boxes and fuses. Our products are exported to many African countries such as Cameroon, Côte d’Ivoire, Morocco and Burkina Faso. We have also established long-term and stable cooperative relations with power authorities in Senegal, Gabon, Benin, Guinea and other countries, serving as their important supplier of low-voltage electrical products in China.
We have a professional R&D team and laboratory, dedicated to product innovation and technological upgrading. We firmly believe that progress stems from demand, curiosity and the pursuit of excellence. Therefore, all finished products undergo multiple strict inspections to ensure stable and reliable performance.
We do not merely sell products – we deliver peace of mind. With a complete after-sales service system and efficient supply chain management, we have won the long-term trust of overseas customers. Our promise is simple: to provide safe, durable and economical electrical solutions with our professional expertise and attentive service.
Our persistence in quality has earned us an excellent reputation.
Innovation is our driving force, and reliability is our promise.
All our production and quality management systems meet or exceed CE and ISO standards. The products you receive are certified, safe and reliable, and can be installed and used directly.
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