AIR CIRCUIT BREAKER
Models Available: MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
The MTW1 series intelligent breaker is meticulously designed for seamless integration into AC 50Hz distribution networks, featuring a rated voltage of 400V and 690V, along with a rated current range of 400A~7500A. Its primary function is to efficiently distribute electrical energy while also safeguarding circuits and power equipment from the detrimental effects of overload, under-voltage, short circuit and single-phase earth faults etc. Enhanced with an intelligent protection function and precise selective protection capabilities, this breaker significantly boosts the reliability of power supply systems, effectively preventing
unwanted power outages.Boasting an impulse withstand voltage of8000V at an altitude of 2000 meters, it aligns with standard adjustments for various altitudes, peaking at a maximum of 12000V.
This product strictly adheres to the standards of GB14048.2 'Low-voltage switchgear and control equipment', and aligns perfectly with the low-voltage circuit breaker standard as per IEC60947-2 'Low-voltage switchgear and control equipment, Part 2: Low-voltage circuit breaker'.
-Style: Available in sleek Drawer style
-Style: Available in robust Fixed style
-Model Meaning
Pole number (4P indicates 4 Poles, 3P indicates 3 Poles)
Rated Current
Design code
Air Circuit Breaker
Enterprise code

-Control part: Unveiling the core of sophistication and precision, our control part represents the pinnacle of innovative design and advanced engineering. Impeccably crafted to deliver seamless performance, it ensures unparalleled reliability and efficiency, setting a new standard in the industry.
Shunt
release |
Ue(v) |
AC 220,380/DC110,220 |
Energy-releasing (ON) electromagnet |
Us(v) |
AC 220,380/DC110,220 |
Under-voltage
release |
Ue(v) |
AC 220,380 |
Intelligent type electronic release |
Us(v) |
AC 220,380/DC110,220 |
Motorized operating
mechanism |
Us(v) |
AC 220,380/DC110,220 |
|
|
|
COPPER BAR: A robust backbone, essential for unparalleled conductivity and efficiency.
Red copper: The heart of our design, offering exceptional performance and reliability.Silver: A premium touch that enhances conductivity and value. Plated material: Ensures durability and longevity, maintaining pristine condition over time.
Good heat: A testament to our commitment to safety and performance under all conditions. Dissipation: Effectively manages thermal output, safeguarding the entire system. Performance: Elevates operational standards, ensuring consistent excellence.
Corrosion resistance: Built to withstand the elements, ensuring longevity and reliability.
Widening: An innovation in design, optimizing operational capabilities. And: A seamless integration of features, ensuring comprehensive functionality. Thickening: Enhances structural integrity, providing a robust and resilient build. Of copper bar size: Tailored to meet demanding industry requirements with precision.
Compliant with standards: Adhering to the highest benchmarks, ensuring peace of mind.
CONDUCTIVE SYSTEM: Engineered for superior efficiency, delivering optimal power flow.
The Number of contact pieces: Carefully calibrated to align with specific current needs. Is determined by the current: Tailored for precise operation, adapting to varying electrical loads.
The moving contact is made of: A testament to our commitment to quality and performance. Copper plated silver: A harmonious blend offering exceptional conductivity and reliability. Material: Chosen for its excellent properties, ensuring durability and efficiency.
The moving contact is made of: Engineered for excellence in electrical performance. Silver: A critical component, enhancing conductivity and operational precision. Dots, Good conductivity: Ensures seamless power transfer, optimizing system performance.
-Internal components: The heart of the mechanism, crafted for superior performance.
Conductive parts: Essential elements that ensure efficient and reliable power distribution.
-Copper bars, contacts: These core components guarantee excellent electrical flow and connectivity.
Secondary control part: The brain of the system, orchestrating seamless operations.
-Wiring terminals, mechanisms, controllers, motors, coils, current Transformer: Ensures smooth and efficient power conversion and distribution.
Arc extinguishing section: A critical safety component, designed to handle electrical arcs proficiently.
-Interrupter: Ensures timely disruption of current flow, safeguarding the entire system.
-Fixed and drawer type construction: Versatile design choices to meet diverse industrial needs.
Installation Instructions
-Securely Installed Inside the Panel
Fixed Type Installation:
The circuit breaker is steadfastly mounted on the distribution cabinet or installation board and remains immobile.
Perfect for scenarios that do not necessitate frequent replacement or maintenance.
Effortless installation and cost-effective solution.
Drawout Type Installation:
The circuit breaker is expertly mounted on a withdrawable frame ensuring convenient maintenance, efficient testing, and seamless replacement.
Ideal for environments that demand frequent operation or regular maintenance.
Though installation is intricate and costly, it provides enhanced adaptability.
Plug-In Type Installation:
The circuit breaker connects to the busbar via a plug-in connection, facilitating swift and straightforward installation and replacement.
Perfect for conditions necessitating rapid replacement.
-Secondary Wiring Method
1 and 2: Integrate the intelligent controller
27 and 28:Link the undervoltage coil
29 and 30: Connect the shunt coil
31 and 32:Secure the closed coils
34 and 35: Connect the energy storage motor
Mechanical operation test:
Ensure the seamless mechanical operation of the circuit breaker is flexible and reliable.
Evaluate the performance of operation functions such as closing, opening, and energy storage.
Electrical performance testing:
Insulation resistance test: Employ a megohmmeter to meticulously measure the insulation resistance of the main and auxiliary circuits, ensuring alignment with the standard (usually ≥ 1M Ω).
Power frequency withstand voltage test: Apply the rated power frequency voltage (such as 2500V/1min) to both the main circuit and auxiliary circuit to assess insulation performance.
Contact resistance test: Measure the contact resistance of the main contact, ensuring it's within the specified limits (typically micro ohm level).
Protection function test:
Examine the precision action values and response times of protection functions including overload, short circuit, and ground fault.
Authenticate the settings andfunctionality of the intelligent release device.
Outer packaging:
To ensure ultimate protection, robust wooden boxes are typically employed to offer exceptional mechanical strength.
A wooden crate is the ideal choice for large circuit breakers or when shipping internationally, providing peace of mind.
Inner packaging:
Encapsulate the circuit breaker with cushioning materials like foam pad, bubble film or pearl cotton to effectively mitigate vibration and prevent any collision during transit.
For accommodating larger circuit breakers, the packaging box might feature a stratified design, where accessories (such as manuals, tools, spare parts) are strategically placed on the upper layer for easy access.
Our production line
Mingtuo Electric Mingtuo Electric is not only a leader in the domestic market but is also making significant strides into the international arena. Our exceptional range of products graces sectors such as construction, industry, and energy, earning the trust and admiration of numerous esteemed engineering projects across the globe.
The company adheres to the principle ofcustomer first, quality first, service first, reputation firstand constantly pursues the concept of innovation and development. The company is equipped with robust technical expertise, cutting-edge production technology, and a wealth of experience, particularly in research and development. Renowned for our professionalism and technological leadership, we boast a complete set of the most advanced production, testing, and inspection equipment available in China.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For detailed insights into our product specifications, please reach out to our dedicated customer service team.
Q: What is the MOQ? Do you support sample ordering?
A: We offer unparalleled flexibility with a minimum order quantity of just 1 set, including the option for sample ordering.
Q: How long is the warranty period? How to apply for warranty?
A: Our products are backed by a comprehensive warranty ranging from one to two years. For warranty applications, please directly contact our customer service.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: Yes, we proudly hold CE and RoHS certifications and can readily supply the necessary certificates.
Q: Does the price include tax/shipping?
A: Please note that our listed prices are exclusive of shipping and tax fees.
Q: What famous clients or project cases have you worked with?
A: We have had the privilege of working with renowned clients such as the State Grid of China, Chint Group, and Xiaomi Group, showcasing our commitment to excellence.