AIR CIRCUIT BREAKER
Models Available: MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
The MTW1 series intelligent breaker is expertly designed for the distribution network of AC 50Hz, ensuring optimal performance with a rated voltage of 400V and 690V, and a rated current of 400Ato 7500A. This breaker is engineered to distribute electric energy efficiently and safeguard circuits and power equipment against the dangers of overload, under-voltage, short circuit and single-phase earth faults etc. Equipped with an intelligent protection function and precise selective protection, the breaker significantly enhances the reliability of your power supply while preventing
unnecessary power outages.The circuit breaker boasts an impressive impulse withstand voltage of8000V at altitudes up to 2000 meters (customized for different altitudes, with an upper limit not exceeding 12000V).
This product complies with the stringent standards of GB14048. 2 for low-voltage switchgear and control equipment, specifically the low-voltage circuit breaker, and adheres to IEC60947-2 standards for low-voltage switchgear and control equipment, particularly the second part: low-voltage circuit breakers.
-Style Options: Drawer style
-Style Options: Fixed style
-Understanding the Model Designations
Pole Number Explained: 4P indicates 4 Poles, 3P indicates 3 Poles
Rated Current Specifications
Design Code Description
Exploring Air Circuit Breaker
Enterprise Code Details

-Control part: Experience seamless control and precision with our advanced technology, ensuring optimal performance and reliability in all your 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 |
|
|
|
COPPER BAR
Crafted from premium red copperwith a lustrous silver plated finish material
Exhibits exceptional heat dissipation performance to ensure stability
Boasts impressive corrosion resistance
Enhanced design with widening and thickening of copper bar size for superior durability
Perfectly compliant with industry standards
CONDUCTIVE SYSTEM
The number of contact pieces is expertly determined by the current capacity requirements
The moving contact is expertly crafted from copper plated silver material for enhanced durability
The moving contact features high-quality silver dots ensuring superior conductivity
-Internal components meticulously designed
Conductive parts include:
-Robust copper bars, highly efficient contacts
Secondary control part encompasses:
-Precision wiring terminals, mechanisms, state-of-the-art controllers, advanced motors, high-quality coils, current transformer
Arc extinguishing section offers:
-reliable interrupter
-Available in both fixed and drawer type construction for versatile applications
Installation Instructions
-Installed inside the panel
Fixed Type Installation:
The circuit breaker is meticulously secured onto the distribution cabinet or installation board and remains immovable.
Ideal for environments where replacement or maintenance is infrequent.
Effortless installation and economical cost.
Drawout Type Installation:
The circuit breaker is set upon a withdrawable frame, allowing for convenient maintenance, testing, and replacement.
Perfect for settings demanding regular operation or maintenance.
Though the installation is intricate and costly, it provides enhanced flexibility.
Plug in Type Installation:
The circuit breaker seamlessly connects to the busbar via a plug-in connection, facilitating fast and easy installation and swift replacement.
Perfect for scenarios necessitating rapid replacement.
-Secondary Wiring Method
1 and 2: Link the intelligent controller
27 and 28:Connect the undervoltage coil
29 and 30: Integrate the shunt coil
31 and 32:Attach closed coils
34 and 35: Connect the energy storage motor
Mechanical Operation Test: Precision in Every Move
Thoroughly assess whether the mechanical operation of the circuit breaker showcases flexibility and reliability.
Conduct a comprehensive evaluation of operation functions, including closing, opening, and energy storage.
Electrical Performance Testing: Guaranteed Safety and Efficiency
Insulation Resistance Test: Employ a megohmmeter to measure the insulation resistance of both main and auxiliary circuits, ensuring they adhere to the stringent standard (typically ≥ 1M Ω).
Power Frequency Withstand Voltage Test: Apply the rated power frequency voltage (e.g., 2500V/1min) to both main and auxiliary circuits to verify superior insulation performance.
Contact Resistance Test: Accurately measure the contact resistance of the main contact, ensuring it remains below the specified value, typically at the micro ohm level.
Protection Function Test: Securing Reliable Operation and Protection
Test and ensure the precise action values and timing for protection functions, including those against overload, short circuit, and ground fault.
Verify and confirm the settings andfunctionality of the intelligent release device, ensuring optimal performance and safety.
Outer packaging:
Robust and Durable wooden boxes are meticulously crafted to ensure ample mechanical strength, safeguarding your valuable equipment.
Wooden crates are ideal for securing large circuit breakers during international transit, ensuring safety and integrity.
Inner packaging:
Each circuit breaker is enveloped in premium protective materials, including foam pads, bubble films or pearl cotton, to effectively mitigate vibrations and prevent any potential damages from collisions.
For large circuit breakers, our packaging box features a sophisticated layered design, with essential accessories like manuals, tools, and spare partsstrategically placed on the upper layer to enhance accessibility
Our production line
Mingtuo Electric Mingtuo Electric not only commands a pivotal presence domestically but is also progressively expanding its influence on the international stage. Our exceptional products are seamlessly integrated into diverse sectors, including construction, industry, and energy. Trusted and preferred by numerous prestigious engineering projects, we continue to strengthen our global footprint.
The company adheres to the guiding principle ofcustomer first, quality first, service first, reputation first,while relentlessly pursuing a philosophy of innovation and development. Our company boasts remarkable technical prowess, cutting-edge production technology, and proven expertise in research and development. Renowned for our professionalism and technological leadership, we possess a comprehensive suite of state-of-the-art production, testing, and inspection equipment, setting the standard in China.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For detailed specifications on voltage/current range and breaking capacity, please reach out to our customer service team for expert assistance.
Q: What is the MOQ? Do you support sample ordering?
A: The minimum order quantity is 1 set, and we proudly support sample ordering to ensure satisfaction and to meet your testing needs.
Q: How long is the warranty period? How to apply for warranty?
A: Enjoy peace of mind with a warranty period ranging from one to two years. For warranty applications, simply contact our customer service for seamless assistance.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We hold CE and RoHS certifications and are pleased to provide these certificates upon request, underscoring our commitment to quality and compliance.
Q: Does the price include tax/shipping?
A: Please note that our prices are exclusive of shipping and tax. We are happy to provide detailed estimates upon inquiry.
Q: What famous clients or project cases have you worked with?
A: We proudly collaborate with esteemed clients, including the State Grid of China, Chint Group, and Xiaomi Group, showcasing our proven track record in delivering excellence.