The MTV1-12/630-31.5KA vacuum circuit breaker operates on a sophisticated principle to ensure electrical safety. When an overload or short-circuit is detected, the current sensor relays signals to the intelligent controller. This controller then activates the tripping coil, which releases the energy-stored spring in the operating mechanism. This action causes the contacts to separate rapidly, effectively extinguishing the arc and preventing damage.
Key internal components include a robust operating mechanism for precise control, fixed terminals for secure connections, a vacuum interrupter as the core arc-extinguishing element, and a drawout-type contact arm for flexibility. Silver-plated copper contacts enhance conductivity and resist oxidation, while the insulating cylinder and aviation connector ensure reliability and protection. The finger cluster contacts provide a stable electrical connection, and the drawout chassis supports smooth operation of movable parts.
This product is designed for high-performance applications in various sectors, offering tailored solutions through OEM and ODM services. It integrates advanced manufacturing and engineering to meet global standards, with certifications including CE and RoHS.


Fantastic experience from start to finish. The shipping was incredibly fast and efficient, arriving well ahead of the estimated delivery date. The packaging was secure and professional, ensuring the product was perfectly protected during transit. Regarding the item itself, the build quality is immediately apparent—it feels robust, well-constructed, and meets the high standards one would expect for industrial components. The finish and attention to detail are excellent. Customer service was also top-notch; the communication was clear, prompt, and very helpful in answering my pre-purchase questions. Overall, a very smooth and satisfactory transaction. I am highly impressed with the logistics, the evident quality of the product, and the professional service provided. This is exactly the kind of reliable performance and support needed for critical applications. Would not hesitate to order again based on this experience.
Hats off to the supplier for the incredibly swift delivery. The shipping was remarkably fast, and the package arrived in perfect condition, well-protected against any potential transit damage. Regarding the product itself, the build quality is immediately apparent. The materials feel robust and durable, exactly what one expects for industrial-grade electrical components. The finish is precise, and there are no visible defects or imperfections. Customer service was equally impressive. My inquiries were addressed promptly and professionally, with clear and helpful communication throughout the process. The overall experience from ordering to receipt was seamless and highly satisfactory. This level of attention to logistics, product integrity, and support is commendable and sets a high standard. I am thoroughly pleased with this transaction and would not hesitate to recommend this supplier based on this experience alone. The combination of efficient logistics, superior quality, and excellent service makes them a reliable partner for industrial needs.
Brisk delivery was the first positive note. The package arrived well ahead of the estimated schedule, which was a welcome surprise. The components were securely packaged with no signs of damage during transit. Upon inspection, the build quality appears robust and meets industrial standards. The finish is clean and the overall construction feels solid, instilling confidence for its intended application. Communication from the seller was prompt and professional throughout the process, answering preliminary queries efficiently. While long-term performance remains to be seen, the initial impression regarding the physical product and the transactional experience is highly favorable. The ordering process was straightforward, and the item matched its description accurately. This efficient service and apparent quality make for a satisfactory procurement experience for our electrical panel requirements.
A fantastic experience overall! The shipping was incredibly fast, arriving much sooner than expected, which was a pleasant surprise. The quality of the product is top-notch; it feels durable and well-made, giving me confidence in its reliability. Customer service was outstanding—they were responsive and helpful throughout the process. Highly recommended for anyone needing such components.
Rapid delivery and excellent packaging ensured the item arrived safely without any delays. The quality appears robust and well-manufactured, meeting my expectations for industrial components. Customer service was responsive and helpful when I had questions, making the overall experience smooth and satisfactory.
The shipping was incredibly fast and reliable, arriving well ahead of the estimated delivery date. The packaging was secure and ensured the product was in perfect condition upon arrival. I'm thoroughly impressed with the overall quality—it feels durable and well-manufactured, meeting high standards for industrial use. The customer service team was responsive and helpful, promptly addressing my inquiries with clear and friendly communication. This combination of efficient logistics, superior craftsmanship, and excellent support makes for a highly satisfactory purchasing experience.
Upon receiving the order, I was thoroughly impressed by the swift delivery, which arrived ahead of schedule, ensuring no delays in our project timeline. The packaging was secure and professional, preventing any damage during transit. As for the product quality, it exceeded expectations with robust construction and precise craftsmanship, reflecting high standards in industrial components. Customer service was exceptional, providing prompt responses and helpful assistance throughout the process. Overall, a seamless experience that I would highly recommend to others in need of reliable electrical solutions.
Zippy delivery and excellent packaging ensured my order arrived safely and ahead of schedule. The quality of the components is top-notch, with sturdy construction and reliable performance that meets industrial standards. Customer service was responsive and helpful, promptly addressing my inquiries with clear, friendly communication. Overall, a seamless experience that I highly recommend for anyone needing dependable electrical parts.
Wow, the shipping was incredibly fast and efficient, with the package arriving well ahead of schedule. The quality of the product appears robust and reliable, meeting my expectations for industrial-grade components. Customer service was responsive and helpful throughout the process, addressing my queries promptly. Overall, a smooth and satisfactory experience from start to finish.
Delivery was incredibly fast and efficient, arriving well ahead of schedule. The packaging was secure, ensuring the item reached me in perfect condition. The quality of the product is outstanding, with robust construction and excellent finishing that meets high industrial standards. Customer service was exceptional; the support team was responsive and helpful throughout the process. Definitely a reliable choice for industrial needs.