AIR CIRCUIT BREAKER
Models: MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
Introducing the MTW1 series intelligent breaker, a marvel of engineering tailored for the AC 50Hz distribution network. This cutting-edge breaker operates with a rated voltage of 400V and 690V, showcasing a versatile rated current range of 400Ato7500A. This state-of-the-art solution is designed to efficiently manage and distribute electric energy while delivering exceptional protection for circuits and power equipment against the potential dangers of overload, under-voltage, short circuit and single-phase earth faults. This breaker is equipped with an intelligent protection feature and provides precise selective protection, greatly improving power supply reliability and preventing
unnecessary power disruptions.With an impressive impulse withstand voltage of8000V at an altitude of 2000 meters (calibrated for varying altitudes, with a peak not exceeding 12000V), this breaker stands as a paragon of durability.
This exceptional product complies with the rigorous standards of GB14048.2 for low-voltage switchgear and control equipment, with a specific focus on low-voltage circuit breakers, and it adheres to IEC60947-2 for low-voltage switchgear and control equipment, part two: low-voltage circuit breaker, ensuring unmatched quality and safety.
-Style: Drawer style
-Style: Fixed style
-Model Meaning
Pole number (4P indicates 4 Pole, 3P indicates 3 Pole)
Rated Current
Design code
Air Circuit Breaker
Enterprise code

-Control Part: Discover the pinnacle of precision and performance with our advanced control component, meticulously engineered to meet all your power management needs. Experience unmatched reliability and control efficiency, ensuring seamless integration with your power systems for optimal functionality in all applications.
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 |
|
|
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COPPER BAR: A Masterpiece of Conductivity Redefined
Pristine Red Copper: The Pinnacle of QualityExquisite Silver Finish: Elegance Meets Efficiency Plated with Precision: Masterful Craftsmanship
Remarkable Heat Management Dissipation Capabilities for Optimal Performance: Engineered Excellence
Exceptional Corrosion Resistance: Built to Last
Enhanced Widening and Strategic Thickening for Maximum Copper Bar Dimensions: Fortified and Reliable
Fully Compliant with Industry Standards: A Commitment to Quality
INNOVATIVE CONDUCTIVE SYSTEM: Cutting-Edge Technology
The precise number of contact pieces is crafted with meticulous care and determined precisely by the current for unparalleled performance
The robust moving contact is crafted from high-quality copper plated with luxurious silver for superior conductivity materials: An Artful Blend
The moving contact features strikingly brilliant silver dots, ensuring superior conductivity every time
-Sophisticated Internal Components Designed for Excellence
Superior Conductive Parts: Crafted for Peak Performance
- Premium Copper Bars, High-Quality Contacts for Consistent Conductivity
Advanced Secondary Control Part: Precision and Reliability
- Robust Wiring Terminals, Precision Mechanisms, Smart Controllers, Durable Motors, Efficient Coils, and Accurate Current Transformers
Highly Efficient Arc Extinguishing Section: Innovation at its Best
-Cutting-Edge Interrupter Technology
- Available in Fixed and Versatile Drawer Type Construction
Installation Instructions
-Installed inside the panel
Fixed Type Installation:
Securely affixed to your trusted distribution cabinet or installation board and remains steadfastly stationary.
Tailor-made for environments where parts rarely need swapping or maintenance.
Revel in the simplicity of installation and enjoy the benefits of cost-effectiveness.
Drawout Type Installation:
Nestled within a withdrawable frame optimized for user-friendly maintenance, uncomplicated testing, and painless replacement.
Perfectly suited for operations necessitating frequent use or consistent maintenance.
Though installation may be complex and require more investment, it delivers superior versatility.
Plug-in Type Installation:
Effortlessly connect the circuit breaker to the busbar with a plug-in mechanism, enabling ultra-fast installation and swift replacement.
An impeccable choice for settings where rapid component exchange is critical.
-Secondary Wiring Method
1 and 2: Seamlessly interface the intelligent controller
27 and 28:Effortlessly link the undervoltage coil
29 and 30: Integrate the shunt coil with precision
31 and 32:Engage closed coils with ease
34 and 35: Connect the energy-storing motor seamlessly
Comprehensive Mechanical Operation Test:
Engage in a meticulous examination of the circuit breaker's mechanical operations to ascertain its exceptional flexibility and its steadfast reliability.Assess the flawless operational capabilities, including functions such as
closing ,opening , and evaluate the precision involved inenergy storage. Electrical Performance Testing Excellence:Conduct an insulation resistance test: Utilize a megohmmeter to meticulously measure the insulation resistance across both main and auxiliary circuits, ensuring adherence to and surpassing standard regulations (typically ≥ 1M Ω).
Power Frequency Withstand Voltage Test: Implement the rated power frequency voltage (e.g., 2500V/1min) on both primary and auxiliary circuits, scrutinizing the insulation performance's robustness.
Contact Resistance Test: Carefully measure the contact resistance of the primary contact to ensure it remains below the specified threshold, commonly maintained at a micro ohm level.
Protection Function Test Mastery:
Critically evaluate the action values and timing of protection functions, including
overload, short circuit
, and ground fault. Ensure the accurate calibrationand operational excellence
of the state-of-the-art intelligent release device.
Outer Packaging: A Fortress of Protection
Robust and Resilient Our meticulously crafted wooden boxes are strategically selected to offer unparalleled mechanical strength, ensuring your valuable equipment is guarded against any potential harm.
Wooden crates, known for their exceptional durability, are perfectly tailored to accommodate large circuit breakers, making them ideal for international transportation.
Inner Packaging: Cushioned Care
We envelop the circuit breaker in layers of premium protective materials such as high-density foam pads, durable bubble film or resilient pearl cotton to effectively mitigate the risks of vibration and collision, ensuring the integrity of the circuit breaker.
For larger circuit breakers, the packaging box can feature an innovative layered design, with essential accessories like comprehensive manuals, precision tools, and essential spare parts) thoughtfully placed on the upper layer for enhanced accessibility and convenience.
Our production line: Where Technology Meets Excellence
Mingtuo Electric has firmly established itself as a dominant force in the domestic market and is steadily making significant inroads into the global arena. Our esteemed products are widely utilized across various sectors, including construction, industry, and energy. We have gained the trust and admiration of numerous prestigious engineering projects.
The company remains unwavering in its dedication to its core philosophy ofputting the customer first, ensuring exceptional quality, providing unmatched service, and maintaining an outstanding reputation.In addition, we are devoted to fostering a culture of ongoing innovation and forward-thinking growth. Our company is proud to possess a strong technical foundation, state-of-the-art production capabilities, and extensive industry experience in research and development, achieving a sterling reputation for professionalism and technological excellence. We are equipped with a comprehensive suite of China's most advanced production, testing, and inspection equipment.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For detailed information, we invite you to get in touch with our customer service team, who are always ready to assist you.
Q: What is the MOQ? Do you support sample ordering?
A: The minimum order quantity is 1 set, and we are delighted to offer support for sample orders to meet your needs.
Q: How long is the warranty period? How to apply for warranty?
A: Our products include a warranty period of one to two years. To apply for warranty service, please directly contact our customer service team.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We proudly hold CE and RoHS certifications and are more than willing to provide these certificates upon request.
Q: Does the price include tax/shipping?
A: Kindly note that shipping and tax are not included in the listed price.
Q: What famous clients or project cases have you worked with?
A: Our distinguished clientele features the State Grid of China, Chint Group, and Xiaomi Group, reflecting our high standards and esteemed partnerships.