AIR CIRCUIT BREAKER
MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
The MTW1 series intelligent breaker is perfectly crafted for the robust distribution network of AC 50Hz, supporting a rated voltage of 400V and 690V, with a rated current spectrum of 400Ato7500A, designed to efficiently distribute electric energy while safeguarding the circuit and power equipment from potential harm caused by overload, under-voltage, short circuit and single-phase earth faults. Equipped with an advanced intelligent protection function and precise selective protection, this breaker enhances the reliability of your power supply while preventing
unwanted power outages.The circuit breaker boasts an impressive impulse withstand voltage of8000V at altitudes up to 2000 meters (calibrated for varying altitudes, ensuring a maximum not surpassing 12000V).
This product complies impeccably with the standards set by GB14048.2 for low-voltage switchgear and control equipment, including low-voltage circuit breakers, and adheres to IEC60947-2 standards for low-voltage switchgear and control equipment, part two: low-voltage circuit breaker.
-Style: Drawer style
-Style: Fixed style
-Model Meaning
Pole number (4P signifies 4 Pole, 3P signifies 3 Pole)
Rated Current
Design Code
Air Circuit Breaker
Enterprise Code

-Control Part: Delve into the state-of-the-art control mechanisms that define the precision and reliability of the 800A High Breaking Capacity Air Circuit Breaker Fixed Type Design. Discover how each meticulously crafted component collaborates to deliver unparalleled performance and safety.
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 |
|
|
|
Robust COPPER BAR
Premium Red CopperGleaming Silver Exquisite Plated Material
Excellent Heat Dissipation Qualities Exceptional Performance
Remarkable Corrosion Resistance
Ingenious Widening and Substantial Thickening of Copper Bar Size
Strictly Compliant with Standards
Advanced CONDUCTIVE SYSTEM
The precise number of contact pieces is meticulously determined by the current
The dynamic moving contact is crafted from high-quality copper plated with silver for enhanced material strength
The moving contact is skillfully made of durable silver dots, ensuring superb conductivity
for seamless operationsSophisticated Internal Components
Highly Conductive Parts:
-Superior Copper Bars and Contacts
Secondary Control Part:
-Includes Wiring Terminals, Mechanisms, Advanced Controllers, Reliable Motors, Efficient Coils, and Current Transformer
Innovative Arc Extinguishing Section:
-Superb Interrupter
-Available in Fixed and Drawer Type Construction for Flexibility
Installation Instructions
- Delicately installed inside the panel, ensuring seamless integration with your existing setup.
Fixed Type Installation:
The circuit breaker is robustly fixed on the distribution cabinet or installation board and remains steadfast, immovable for enduring performance.
Ideal for environments that do not demand frequent replacement or intensive maintenance, offering reliable stability.
This method ensures an effortless installation and keeps costs minimal, offering a budget-friendly solution.
Drawout Type Installation:
The circuit breaker is expertly mounted on a withdrawable frame, facilitating hassle-free maintenance, robust testing, and effortless replacement.
Perfect for scenarios requiring frequent operation or regular maintenance.
Although installation is intricate and incurs higher costs, it provides unmatched flexibilityfor dynamic operations.
Plug-in Type Installation:
The circuit breaker effortlessly connects to the busbar through a plug-in mechanism, streamlining installation and rapid replacement.
This method is perfect for situations necessitating swift replacement.
-Secondary Wiring Method
1 and 2: Precisely connect the intelligent controller for optimal performance.
27 and 28:Ensure accurate connection to the undervoltage coil to maintain system integrity.
29 and 30: Securely connect the shunt coil for reliable operation.
31 and 32:Effectively connect closed coils to enhance functionality.
34 and 35: Connect the energy storage motor for uninterrupted power management.
Meticulous Mechanical Operation Test:
Thoroughly check whether the mechanical operations of the circuit breaker are perfectly flexible and completely reliable.
Ensure the operational functions are flawless, testing actions such as seamless closing, prompt opening, and efficient energy storage.
Comprehensive Electrical Performance Testing:
Conduct a robust insulation resistance test using a precise megohmmeter to measure the insulation resistance of both main and auxiliary circuits, ensuring they adhere to standards with values usually ≥ 1M Ω.
Apply a stringent power frequency withstand voltage test by subjecting the main and auxiliary circuits to a rated power frequency voltage, such as 2500V for 1 minute, to assess superior insulation performance.
Perform an accurate contact resistance test to precisely measure the contact resistance of the main contact, ensuring it remains below the specified micro ohm level, indicative of optimal performance.
Comprehensive Protection Function Test:
Thoroughly test the critical action values and response times of protection functions including overload, short circuit, and ground fault.
Systematically verify the precision settings androbust functionality of the intelligent release device to ensure superior protection capabilities.
Outer packaging:
To ensure unparalleled protection, we employ robust wooden boxes which are designed to deliver exceptional mechanical strength.
These resilient wooden crates are ideal for accommodating large circuit breakers or for international shipping purposes.
Inner packaging:
Each circuit breaker is meticulously wrapped with premium buffer materials such as foam pads, bubble film or pearl cotton to effectively mitigate any vibration and prevent collisions.
For large circuit breakers, the packaging is ingeniously designed with a layered approach. Accessories like manuals, tools, and spare partsare thoughtfully placed on the upper layer for easy access.
Our production line
Mingtuo Electric Mingtuo Electric not only stands as a cornerstone in the domestic market but is also making significant strides on the global stage. Our products find their application across diverse sectors such as construction, industry, and energy, earning the trust and preference of countless engineering projects worldwide.
The company adheres to the principle of customer first, quality first, service first, reputation first, and constantly pursues the concept of innovation and development. With an unwavering commitment to excellence, the company possesses strong technical strength, advanced production technology, and mature experience in research and development. Renowned for our professionalism and technological leadership, we boast a complete suite 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 specifications on voltage and current ranges, as well as breaking abilities, please consult our dedicated customer service team.
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 you are fully satisfied before committing.
Q: How long is the warranty period? How to apply for warranty?
A: Our products come with a warranty ranging from one to two years. For any warranty claims, simply reach out to our customer service team for seamless assistance.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: Yes, we are proud to hold CE and RoHS certifications and can provide these certificates upon request.
Q: Does the price include tax/shipping?
A: Please note that our prices are quoted exclusive of shipping and tax.
Q: What famous clients or project cases have you worked with?
A: We are honored to have collaborated with prestigious clients such as the State Grid of China, Chint Group, and Xiaomi Group, showcasing our reputation and reliability.