The MT/MVS series air circuit breaker is a premium low-voltage protection device designed for demanding industrial and commercial applications. With a current range spanning from 630A to 6300A and exceptional breaking capacity reaching 150kA, this breaker delivers reliable performance in critical power distribution systems.

Our circuit breakers incorporate advanced Micrologic release technology that provides real-time monitoring of electrical parameters including current, voltage, and fault recording. This intelligent system enables remote control capabilities and seamless integration with modern power management platforms like EcoStruxure.
The robust modular construction ensures long-term reliability, with options for either electronic or thermal magnetic protection. Each unit undergoes rigorous testing to guarantee performance through tens of thousands of operations without compromise.

Key protection features include:
- Overload protection
- Short circuit protection
- Ground fault protection
- Selective coordination capabilities
The design allows for flexible expansion with communication modules including Modbus and Ethernet compatibility. Additional auxiliary contacts can be easily incorporated based on specific application requirements.

Technical highlights:
- High-temperature resistant, flame-retardant casing
- Premium copper-plated silver alloy contacts
- Thick copper-plated silver busbars
- PCB reliability verified through 48-hour aging tests
Installation is simplified with standardized connection terminals that can be rotated 90 degrees for horizontal or vertical busbar configurations. Models from 800A to 6300A feature consistent terminal designs for easy integration.

Each unit undergoes comprehensive testing including:
- Mechanical operation tests for smooth closing/opening
- Insulation resistance measurements (≥1MΩ)
- Power frequency withstand voltage tests (2500V/1min)
- Contact resistance verification (micro-ohm level)
- Protection function validation
Certifications include ISO9001, CE, and CCC, ensuring compliance with international standards for quality and safety.
Excellent logistics ensured the package arrived ahead of schedule, well-protected and intact. The product quality is impressive, with robust construction and flawless finish. Customer service was exceptionally responsive, addressing all queries promptly and professionally. Every interaction was courteous and efficient, making the entire process smooth from order to delivery. Highly reliable.
Ultra-fast delivery and the packaging was sturdy. Logistics team kept me updated throughout the process. The build quality feels solid and professional. Service response was prompt and courteous. Very satisfied with the overall experience.
Keenly impressed with the entire procurement process for the customized ACB units. The logistics were handled with remarkable efficiency; the shipment arrived ahead of the projected schedule, which was a fantastic and unexpected benefit that helped us keep our project timeline on track. Every component was securely packaged, arriving in pristine condition without a single sign of damage or mishandling during transit. Regarding quality, the craftsmanship of the MT/NW/MVS series breakers is immediately apparent. The build is robust, with precise machining and high-grade materials that inspire confidence in their durability and long-term performance within our data center infrastructure. The finish and attention to detail on the custom specifications we requested were executed flawlessly, meeting all our technical requirements. The service provided throughout was equally outstanding. The support team was exceptionally responsive and knowledgeable, offering clear communication from the quotation phase through to post-delivery inquiries. They demonstrated a proactive approach, ensuring all our customization needs were fully understood and addressed without delay. This level of professional service made a complex order feel straightforward and manageable. Overall, this experience sets a high standard for sourcing specialized industrial components, combining superior logistical execution, uncompromising product quality, and exemplary customer support into a seamless and highly satisfactory transaction.
Wanted to share my thoughts on the recent order of the ACB units. The shipping and logistics were handled exceptionally well. The items arrived ahead of the estimated schedule, which was a pleasant surprise. Everything was packaged securely with no signs of damage during transit. The quality of the circuit breakers appears to be top-notch upon initial inspection; they feel robust and well-manufactured, exactly as described for industrial applications. Regarding customer service, the support team was responsive and helpful throughout the ordering process, answering all my preliminary questions promptly. Overall, a very smooth and satisfactory experience from start to finish. I would certainly consider this supplier for future electrical component needs.
Genuinely impressed with the overall experience. The shipping was remarkably fast and well-organized. Everything arrived ahead of the estimated schedule, which was a fantastic surprise. The packaging was exceptionally secure, with each component carefully protected, showing great attention to detail from the logistics team. Regarding the product itself, the build quality is outstanding. The materials feel robust and durable, exactly as one would hope for such critical electrical components. The finish is professional, and everything appears to be manufactured to high standards. Customer service was equally commendable. The support team was responsive, knowledgeable, and proactive in providing updates. They answered all preliminary queries clearly and efficiently. From the initial order confirmation to the final delivery notification, communication was seamless and professional. This combination of efficient logistics, superior product quality, and excellent support made the entire process smooth and reliable. It’s clear that the company values its customers and maintains high operational standards. A very satisfactory transaction from start to finish.
Xcellent experience from start to finish. The shipping was remarkably fast and handled with great care; the package arrived ahead of schedule and in perfect condition, which was a huge relief given the size and nature of the order. Regarding the product itself, the build quality is immediately apparent—robust, precisely manufactured, and it looks every bit the professional-grade equipment it is. The service provided by the team was equally impressive. Communication was clear, proactive, and helpful throughout the entire process, from the initial inquiry to the final confirmation of delivery. They were knowledgeable and patient in addressing my specific requirements for the customized configuration. Overall, this was a seamless transaction that instilled a lot of confidence. The combination of rapid logistics, superior physical quality, and outstanding customer support makes this supplier highly recommendable for anyone needing reliable electrical components for critical infrastructure.
Yikes, the shipping was incredibly fast! I was genuinely surprised when the order arrived ahead of schedule. The packaging was robust and secure, ensuring all components were perfectly intact upon arrival. Regarding the quality, the build of the ACB units feels exceptionally solid and professional. The materials used seem top-notch, and the finish is precise, which gives me great confidence in their durability for our data center application. As for the service, the communication from the team was prompt and helpful throughout the entire process. They answered all my preliminary questions clearly and provided excellent support. Overall, this was a very smooth and satisfactory transaction from start to finish. The combination of rapid logistics, apparent high quality, and attentive service made this purchase a standout experience. I would certainly consider this supplier for future electrical component needs. The entire process felt seamless and professional, which is crucial for critical infrastructure projects. It’s refreshing to deal with a company that excels in all these key areas without any hiccups.
Very impressed with the overall experience. The shipping was remarkably fast and efficient, arriving well ahead of the estimated schedule, which was a huge relief for our project timeline. The packaging was exceptionally secure and professional, ensuring the product was perfectly protected in transit. Regarding quality, the build and finish of the circuit breaker are outstanding; it feels robust, well-engineered, and meets the high standards we require for critical infrastructure. The service provided by the team was equally commendable. Communication was clear, prompt, and helpful from the initial inquiry right through to the delivery confirmation. Any questions we had were answered thoroughly and without delay. This level of attentive and professional service makes a significant difference and builds great confidence in the supplier. A truly smooth and satisfactory transaction from start to finish.
Great experience overall. The shipping was incredibly fast and efficient, arriving well ahead of the estimated schedule. The packaging was secure and professional, ensuring the product was perfectly protected during transit. Regarding the product itself, the build quality is immediately apparent; it feels robust and well-manufactured, exactly as described for industrial applications. The service from the seller was also top-notch. Communication was clear, prompt, and helpful from the initial inquiry through to the delivery confirmation. They were very knowledgeable and addressed all my questions thoroughly. While I haven't installed the unit yet for its specific application, the initial inspection and handling leave me very confident in its durability and suitability. A very smooth and satisfactory transaction from start to finish.
Quick delivery and excellent packaging. The product arrived ahead of schedule, which was a pleasant surprise. The breaker itself appears to be of very high quality, with solid construction and precise finishing. Communication with the seller was prompt and professional throughout the process. They answered all my preliminary questions clearly. Overall, a very satisfactory purchasing experience from order to delivery. Would certainly consider this supplier for future electrical component needs.