AIR CIRCUIT BREAKER
MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
The MTW1 series intelligent breaker is expertly crafted to enhance the efficiency of distribution networks operating at an AC frequency of 50Hz. It is ideally suited for networks with a rated voltage of 400V and 690V, offering a robust solution for rated currents ranging from 400Aup to an impressive 7500A. This breaker not only ensures the efficient distribution of electric energy but also provides exceptional protection for circuits and power equipment against potential threats such as overload, under-voltage, short circuits and single-phase earth faults. It is equipped with cutting-edge intelligent protection mechanisms and precise selective protection features, significantly boosting the reliability of your power supply and minimizing the likelihood of
unexpected power disruptions.The circuit breaker showcases a remarkable impulse withstand voltage of8000V at an altitude of 2000 meters, with adaptability for varying altitudes achieving a maximum capacity of 12000V).
This product upholds the stringent standards set by GB14048.2 for low-voltage switchgear and control equipment, specifically targeting low-voltage circuit breakers, and it additionally complies with IEC60947-2 for low-voltage switchgear and controlling equipment Part 2: Low-voltage circuit breakers.
-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: Experience unmatched precision and efficiency with our advanced control system, meticulously designed to ensure seamless operation and optimal performance at all times. Our control system stands at the forefront of innovation, engineered to provide unparalleled reliability and precision. It guarantees smooth functionality and enhances productivity by seamlessly integrating with your existing infrastructure, delivering a performance level that is truly exceptional.
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
Expertly crafted from premium red copper for peak performance and reliabilityElegantly finished with silver plating to ensure enhanced durability and longevity
Exceptional heat dissipation performance, guaranteeing optimal efficiency and functionality
Remarkable high corrosion resistance to withstand challenging environments
Innovative widening techniques and thickening modifications applied to the copper bar dimensions, resulting in superior performance and resilience
Meticulously designed to comply with the highest industry standards, ensuring utmost reliability
CONDUCTIVE SYSTEM
The precisely calculated number of contact pieces is expertly determined by the specific current load requirements
The moving contact is masterfully crafted from copper, plated with a lustrous layer of silver material to ensure unmatched connectivity
The moving contact is meticulously engineered from silver dots, ensuring superior conductivity and performance
-Internal components
Conductive parts feature the following:
-Copper bars, precision contacts meticulously crafted
Secondary control part highlights include:
-Wiring terminals, cutting-edge mechanisms, intelligent controllers, robust motors, premium coils, and a high-performance current transformer
State-of-the-art Arc extinguishing section:
-interrupter
-Available in both fixed and drawer type construction for versatile and flexible applications
Installation Instructions
- Installed snugly inside the panel, ensuring optimal protection and stability.
Fixed Type Installation:
The circuit breaker is securely mounted on the distribution cabinet, or on an installation board. Once installed, it remains steadfast and immovable, providing reliable operation.
Ideal for environments that do not necessitate frequent switching or ongoing maintenance, offering peace of mind with its steadfast performance.
Enjoy easy installation and a cost-effective setup, delivering exceptional value.
Drawout Type Installation:
The circuit breaker is affixed on a withdrawable frame, enabling effortless access for maintenance, testing,and rapid replacement of components,ensuring minimal disruption to operations. Perfect for environments that demandregular operation or frequent servicing,
offering remarkable convenience. Although the installation is intricate and involves higher costs, it provides enhanced adaptability and flexibility, making it a worthwhile investment.Plug-in Type Installation:
The circuit breaker connects seamlessly to the busbar through a plug-in mechanism, ensuring rapid installation and swift component replacement. This method is ideal for situations requiring quick and efficient replacements.-
Secondary Wiring Method
1 and 2: Connect the intelligent controller seamlessly, ensuring smooth operational management.
27 and 28: Link the undervoltage coil efficiently for dependable voltage monitoring.
29 and 30:Securely attach the shunt coil to maintain operational stability.
31 and 32: Anchor the closed coils firmly, reinforcing reliable operation. 34 and 35: Connect the energy storage motor reliably, ensuring seamless energy management.
Experience the pinnacle of electrical connectivity and performance with these advanced installation techniques.
Mechanical operation test: A Refined Evaluation of Performance and Durability
Check to confirm that the mechanical operation of the circuit breaker is not just flexible but also reliable, ensuring seamless functioning.
Meticulously test the operation functions, including closing, opening, and energy storage, to guarantee precision and efficiency.
Electrical performance testing: Verify the Robustness and Safety of Electrical Systems
Insulation resistance test: Employ a megohmmeter to accurately measure the insulation resistance of both main and auxiliary circuits, ensuring they adhere to the standard (typically ≥ 1M Ω).
Power frequency withstand voltage test: Subject the main circuit and auxiliary circuit to rated power frequency voltage (for instance, 2500V/1min) to scrutinize their insulation performance.
Contact resistance test: Precisely measure the contact resistance of the main contact, confirming it remains below the specified value (generally at the micro ohm level).
Protection function test: Analyzing the Proactive Safeguards in Place
Assess the action values and timing of protection functions such as overload, short circuit, and ground fault, ensuring optimal protection.
Thoroughly verify the settings andfunctionality of the intelligent release device to confirm its effectiveness.
Outer packaging:
To ensure unparalleled protection and strength for our products, we utilize robust and durable wooden boxes that are expertly crafted to provide exceptional mechanical strength, safeguarding your investment with utmost care during transit.
Our meticulously designed wooden crates are ideally suited for accommodating large circuit breakers or resilient international transportation, ensuring your products arrive in pristine condition, every single time.
Inner packaging:
To achieve maximum protection for each circuit breaker, we meticulously wrap it with superior quality buffer materials such as foam pad, bubble film or pearl cotton to effectively mitigate any vibration or collision during transportation, thereby ensuring the integrity and flawless condition of the product.
For larger circuit breakers, we offer a sophisticated packaging solution with an intelligently designed layered structure, allowing accessories like manuals, tools, and spare parts) to be conveniently and securely placed on the upper layer, ensuring perfect organization, easy access, and ultimate safety.
Our production line
Mingtuo Electric Zhejiang Mingtuo Electric Technology Co., Ltd. not only holds a significant and respected position in the domestic market, but is also making impressive strides on the global stage. Our products are highly versatile, serving key sectors such as construction, industry, and energy. Trusted by numerous prestigious engineering projects, our products have earned the admiration and confidence of customers worldwide.
The company adheres to the unwavering principle ofcustomer first, quality first, service first, reputation firstand is relentless in its pursuit of innovation and development. The company has exceptional technical strength, cutting-edge production technology, and extensive industry experience in research and development. Renowned for its professionalism and technological leadership, the company boasts 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 information on product specifications and breaking capacity, please reach out to our dedicated customer service team.
Q: What is the MOQ? Do you support sample ordering?
A: We proudly offer a minimum order quantity of just 1 set and fully support sample ordering to meet your needs.
Q: How long is the warranty period? How to apply for warranty?
A: Our products come with a robust warranty period of one to two years. You can easily apply for warranty directly through our customer service.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We are pleased to confirm that we hold CE and RoHS certifications, and we can readily provide these certificates upon request.
Q: Does the price include tax/shipping?
A: Please note that the listed price does not include shipping or tax.
Q: What famous clients or project cases have you worked with?
A: We've had the privilege to collaborate with esteemed clients such as the State Grid of China, Chint Group, and Xiaomi Group.