AIR CIRCUIT BREAKER
MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
Experience unparalleled performance with the MTW1 series intelligent breaker, meticulously engineered for distribution networks at an AC frequency of 50Hz. It is ideal for handling a rated voltage of 400V and 690V, providing a robust solution with a rated current range of 400A~7500A. This breaker not only distributes electrical energy efficiently but also protects circuits and power equipment from potential threats such as overload, under-voltage, short circuit and single-phase earth faults. With its cutting-edge intelligent protection features and precise selective protection, this breaker greatly enhances power supply reliability, thus reducing the chance of
unexpected power interruptions.Stand out with this circuit breaker's impressive impulse withstand voltage of8000V at an altitude of 2000 meters, adaptable to various altitudes, supporting a maximum capacity up to 12000V).
This exceptional product complies with the stringent standards of GB14048.2 for low-voltage switchgear and control equipment, particularly focusing on low-voltage circuit breakers, while also meeting 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.
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 unparalleled qualitywith an elegantly silver plated finish, ensuring enhanced durability and longevity
Delivers exceptional heat dissipation performance for optimal operational efficiency
Offers high resistance to corrosion
Features innovative widening and thickening techniques applied to copper bar dimensions for superior performance and reliability
Meticulously engineered to comply with stringent industry standards
CONDUCTIVE SYSTEM
The precise number of contact pieces is expertly determined by the current load, ensuring precision and efficiency
The moving contact is crafted from high-quality copper plated with lustrous silver material
The moving contact is engineered from finely polished silver dots, ensuring superior conductivity and performance
-Internal components
Conductive parts include:
-Copper bars, precision-engineered contacts
Secondary control part highlights:
-Wiring terminals, advanced operational mechanisms, intelligent controllers, robust motors, high-quality coils, and current transformer for seamless performance
State-of-the-art Arc extinguishing section:
-interrupter
-Available in both fixed and drawer type construction, offering flexible application solutions
Installation Instructions
-Installed inside the panel
Fixed Type Installation:
Ensuring a steadfast and robust connection, the circuit breaker is securely mounted on the distribution cabinet or installation board, rendering it completely immovable once installed.
This method is ideal for scenarios where frequent switching or ongoing maintenance is not required.
Experience an easy installation and a cost-effective setup.
Drawout Type Installation:
The circuit breaker is strategically affixed onto a withdrawable frame, fostering effortless maintenance, streamlined testing, and convenient replacement of components.
This method is perfect for environments demanding regular operation or routine servicing.
The installation process is intricate and may incur higher costs, yet it offers enhanced adaptability.
Plug-in Type Installation:
Seamlessly connect the circuit breaker to the busbar via the plug-in mechanism, promoting rapid installation and swift replacement.
This method is exemplary for conditions that demand quick replacement.
-Secondary Wiring Method
1 and 2: Effortlessly connect the intelligent controller
27 and 28:Efficiently link the undervoltage coil
29 and 30: Securely attach the shunt coil
31 and 32:Firmly anchor the closed coils
34 and 35: Reliably connect the energy storage motor
Mechanical Operation Test: Ensuring Smooth Functionality
Thoroughly check the mechanical operation of the circuit breaker to guarantee it is seamlessly flexible as well as dependably reliable.
Meticulously test each operational function, including secure closing, efficient opening, and robust energy storage.
Electrical Performance Testing: Verifying Excellence
Insulation Resistance Test: Utilize a precision megohmmeter to accurately measure the insulation resistance of both main and auxiliary circuits, ensuring they exceed the standard threshold, typically ≥ 1M Ω.
Power Frequency Withstand Voltage Test: Administer the rated power frequency voltage, such as 2500V for 1 minute, to both main and auxiliary circuits to meticulously verify insulation performance.
Contact Resistance Test: Precisely measure the contact resistance of the main contact, ensuring it remains below the specified threshold, generally at a micro ohm level.
Protection Function Test: Safeguarding Your Investment
Diligently test the action values and response times of essential protection functions, including overload, short circuit detection, as well as ground fault protection.
Verify the optimal settings andoperational functionality of the state-of-the-art intelligent release device, ensuring unparalleled protection.
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. is not only a major player within the domestic market but is also making extraordinary advances globally. Our products are incredibly adaptable, catering to essential sectors such as construction, industry, and energy. Endorsed by numerous high-profile engineering projects, our offerings have garnered admiration and trust from a worldwide clientele.
The company steadfastly adheres to the core tenet ofcustomer first, quality first, service first, reputation firstand persistently pursues innovation and development. The company possesses remarkable technical strength, pioneering production technology, and comprehensive industry experience in research and development. Celebrated for its professionalism and technological leadership, the company is equipped with a complete set of China's most sophisticated production, testing, and inspection apparatus.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For comprehensive details on product specifications and breaking capacity, we encourage you to connect with our devoted customer service team.
Q: What is the MOQ? Do you support sample ordering?
A: We are delighted to offer a minimum order quantity as low as 1 set and fully endorse sample ordering to accommodate your requirements.
Q: How long is the warranty period? How to apply for warranty?
A: Our products are backed by a robust warranty period spanning one to two years. You can easily initiate a warranty claim through our customer service team.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We are proud to affirm that we possess CE and RoHS certifications, and these certificates are readily available upon your request.
Q: Does the price include tax/shipping?
A: Kindly note that the prices listed do not encompass shipping or tax.
Q: What famous clients or project cases have you worked with?
A: We have had the honor of collaborating with prominent clients such as the State Grid of China, Chint Group, and Xiaomi Group.