AIR CIRCUIT BREAKER
MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
The MTW1 series intelligent breaker is masterfully crafted for distribution networks operating at an AC frequency of 50Hz. It excels in environments with a rated voltage of 400V and 690V, delivering an exceptional rated current range from 400A~7500A. This unit efficiently manages electric power distribution, ensuring protection against potential threats to circuits and power equipment by counteracting dangers such as overload, under-voltage, short circuit and single-phase earth faults. Its advanced intelligent protection features and sophisticated selective protection significantly enhance your power system's reliability, mitigating the risk of
unintended power interruptions.The circuit breaker showcases an extraordinary impulse withstand voltage of8000V at an altitude of 2000 meters, and it adapts gracefully to various altitudes with a maximum capacity reaching 12000V).
This product complies with the stringent standards of GB14048.2 for low-voltage switchgear and control equipment, with a particular focus on low-voltage circuit breakers. It also aligns with IEC60947-2 for low-voltage switchgear and control 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. Elevate your electrical infrastructure with a control system that promises unwavering reliability and precision-engineered sophistication, crafted to meet the highest standards of excellence.
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 |
|
|
|
PREMIUM COPPER BAR
Expertly Crafted from the Finest Red CopperElegantly Coated with Shimmering Silver Plated Material for Enhanced Durability and Endurance
Exceptional Heat Management Efficient Dissipation Performance for Optimal Operational Efficiency
High-Level Corrosion Resistance for Longevity
Innovative Widening and Advanced Thickening Techniques Applied to Copper Bar Dimensions for Unmatched Performance
Meticulously Engineered to Comply with Industry Standards
CONDUCTIVE SYSTEM EXCELLENCE
The Precision of Contact Pieces Expertly Determined by the Current Load Dynamics
The Moving Contact is Skillfully Crafted from Copper, Lustrously Silver-Plated Material for Superior Conductivity
The Moving Contact is Engineered from Silver Dots, Providing Excellent Conductivity and Efficiency
-Internal Components Excellence
Conductive Parts Composition Includes:
- High-Quality Copper Bars and Precision Contacts
Secondary Control Part Highlights Include:
- Wiring Terminals, Advanced Mechanisms, Intelligent Controllers, Robust Motors, High-Quality Coils, and Precision Current Transformers
State-of-the-Art Arc Extinguishing Section:
-Interrupter Excellence
- Available in Both Fixed and Drawer Type Construction for Versatile Application
Installation Instructions
-Installed inside the panel
Fixed Type Installation:
The circuit breaker is securely and robustly mounted on the distribution cabinet or installation board and remains steadfastly immovable once installed.
Perfectly suited for scenarios where frequent switching or ongoing maintenance is not a consideration.
Installation is straightforward and ensures a cost-effective setup.
Drawout Type Installation:
The circuit breaker is securely affixed on a withdrawable frame, facilitating effortless maintenance, testing, and replacement of components.
It is perfectly suited for environments demanding regular operation or frequent servicing.
Though the installation process is more intricate and involves higher costs, it provides superior adaptability.
Plug-in Type Installation:
The circuit breaker connects seamlessly to the busbar via an innovative plug-in mechanism, ensuring rapid installation and efficient replacement.
This approach is ideal for conditions necessitating quick and seamless replacement.
-Secondary Wiring Method
1 and 2: Connect the intelligent controller seamlessly, providing optimal performance
27 and 28:Link the undervoltage coil effectively for enhanced operational efficiency
29 and 30: Securely attach the shunt coil to ensure reliable performance
31 and 32:Anchor the closed coils firmly for unwavering reliability
34 and 35: Connect the energy storage motor reliably, ensuring uninterrupted energy flow
Thorough Mechanical Operation Test:
Meticulously check whether the mechanical operation of the circuit breaker is exceptionally flexible as well as unfailingly reliable.
Evaluate the seamless operation functions such as precise closing, efficient opening, and robust energy storage.
Comprehensive Electrical Performance Testing:
Insulation Resistance Test: Employ a high-quality megohmmeter to meticulously measure the insulation resistance of the main and auxiliary circuits, ensuring they surpass the standard threshold (commonly ≥ 1M Ω).
Power Frequency Withstand Voltage Test: Administer the rated power frequency voltage (such as 2500V for 1 minute) to both the main and auxiliary circuits to rigorously assess the insulation performance.
Contact Resistance Test: Accurately measure the contact resistance of the main contact to ensure it remains below the specified value (typically at the micro ohm level).
Rigorous Protection Function Test:
Diligently test the action values and response times of protection functions, including overload, potential short circuits, as well as ground fault scenarios.
Confirm the precision settings alongsidethe full functionality of the advanced intelligent release device.
Outer packaging:
To ensure unparalleled protection and strength for our products, we utilize robust and durable wooden boxes that are specifically designed to provide exceptional mechanical strength, safeguarding your investment during transit.
Our wooden crates are perfectly suited for accommodating large circuit breakers or for resilient international transportation, ensuring your products arrive in pristine condition.
Inner packaging:
To achieve maximum protection for each circuit breaker, we meticulously wrap it with high-quality buffer materials such as foam pad, bubble film or pearl cotton to effectively mitigate any vibration or collision during transportation, ensuring the integrity of the product.
For larger circuit breakers, we offer a sophisticated packaging solution with a layered design, allowing accessories like manuals, tools, and spare parts) to be conveniently and securely placed on the upper layer, ensuring perfect organization and accessibility.
Our production line
Mingtuo Electric Zhejiang Mingtuo Electric Technology Co., Ltd. stands proudly as a beacon of excellence, renowned for its influential presence in both domestic and international arenas. Our versatile offerings cater to pivotal sectors like construction, industry, and energy. Highly trusted, our products are an integral part of landmark engineering projects, earning global admiration and unwavering trust from our clientele.
The company remains steadfast in its commitment to the core principles ofcustomer first, quality first, service first, reputation firstand passionately pursues innovation and progress. Showcasing extraordinary technical prowess, state-of-the-art production techniques, and profound industry expertise in research and development, we are celebrated for our exceptional professionalism and technological dominance. We are equipped with China's most advanced production, testing, and inspection facilities.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For a comprehensive understanding of our product's specifications and breaking capacity, please contact our expert customer service team.
Q: What is the MOQ? Do you support sample ordering?
A: We are delighted to offer a minimum order quantity of just 1 set and proudly support sample ordering to accommodate your specific requirements.
Q: How long is the warranty period? How to apply for warranty?
A: Our products are backed by a substantial warranty spanning one to two years. Applying for warranty is straightforward via our responsive 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. These certificates are readily available upon your request.
Q: Does the price include tax/shipping?
A: Please be aware that the listed price is exclusive of shipping and tax.
Q: What famous clients or project cases have you worked with?
A: We are honored to have collaborated with distinguished clients like the State Grid of China, Chint Group, and Xiaomi Group.