AIR CIRCUIT BREAKER
MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
Introducing the MTW1 series intelligent breaker, an expertly engineered solution designed for optimal performance in distribution networks. Operating seamlessly with an AC frequency of 50Hz and a precisely rated voltage of 400V and 690V, delivering a robust rated current ranging from 400Ato an impressive7500A. It distributes electrical energy with exceptional efficiency, while providing unparalleled protection to circuits and power equipment against potential damages caused by overload, under-voltage, short circuit and single-phase earth faults. Featuring cutting-edge intelligent protection capabilities and sophisticated selective protection, this breaker markedly enhances the reliability of your power supply, effectively minimizing the risk of
unintended power outages.The circuit breaker stands out with an impressive impulse withstand voltage of8000V at an altitude of 2000 meters, but it is versatile enough to accommodate varying altitudes with a maximum capability of up to 12000V).
This extraordinary product complies with the stringent standards set by GB14048.2 for low-voltage switchgear and control equipment, specifically focusing on low-voltage circuit breakers, and it is fully aligned 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 engineering excellence delivers a user-friendly interface and robust functionality, making every interaction smooth and intuitive. Elevate your operational capabilities with a control system that guarantees reliability and elevates productivity to new heights.
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 quality red copperelegantly silver plated material ensures enhanced durability and longevity
Exceptional heat dissipation performance ensures optimal efficiency and reliability
High corrosion resistance for prolonged lifespan
Innovative widening and thickening techniques applied to copper bar size guarantee superior performance
Meticulously compliant with stringent industry standards
CONDUCTIVE SYSTEM
The precise number of contact pieces is expertly calculated to suit the current load capacity
The moving contact is crafted from copper plated with lustrous silver material
The moving contact is engineered using silver dots, ensuring exceptional conductivity and efficiency
-Internal components are meticulously designed
Conductive parts include:
-Copper bars, precision-engineered contacts
Secondary control part highlights:
-Wiring terminals, state-of-the-art mechanisms, intelligent controllers, robust motors, high-quality coils, and current transformer
State-of-the-art Arc extinguishing section:
-interrupter
-Available in both fixed and drawer type constructions for versatile applications
Installation Instructions
-Installed inside the panel
Fixed Type Installation:
The circuit breaker is securely mounted on the distribution cabinet or installation board and is immovable once installed.
This setup is ideal for applications where the breaker remains in place, perfectly suited for stable environments with no need for frequent switching or ongoing maintenance.
Easy installation and cost-effective setup.
Drawout type installation:
The circuit breaker is affixed on a withdrawable frame, allowing for effortless maintenance, testing, and replacement of components.
This installation is perfect for environments that require regular operation or servicing.
The initial setup is intricate and incurs higher costs, but it provides enhanced adaptability.
Plug in type installation:
The circuit breaker connects seamlessly to the busbar via a plug-in mechanism, ensuring rapid installation and swift replacement.
This method is perfect for conditions that demand quick replacement, offering unparalleled speed and efficiency in time-critical applications.
-Secondary wiring method
1 and 2: Connect the intelligent controller seamlessly, ensuring optimal performance.
27 and 28:Link the undervoltage coil efficiently, enhancing system reliability.
29 and 30: Securely attach the shunt coil to maintain consistent functionality.
31 and 32:Anchor the closed coils firmly to ensure dependable operation.
34 and 35: Connect the energy storage motor reliably to guarantee seamless energy management.
Mechanical Operation Test:
Ensure the circuit breaker's mechanical operations are smooth, agile, and unfailingly dependable.
Evaluate key operational functions, including secure closing,efficient opening,and optimal energy storage.
Electrical Performance Testing: Ensuring Superior Quality
Insulation Resistance Test: Employ a megohmmeter to precisely measure the insulation resistance of both main and auxiliary circuits, confirming adherence to high standards (typically ≥ 1M Ω).
Power Frequency Withstand Voltage Test: Impose the rated power frequency voltage (e.g., 2500V/1min) on the main and auxiliary circuits to rigorously evaluate insulation performance.
Contact Resistance Test: Accurately measure the contact resistance of the primary contact to ensure it remains below the designated threshold (usually at the micro ohm level).
Protection Function Test: Ensuring Safety and Reliability
Conduct precise testing of protection function parameters and timing for scenarios including overload, short circuit, and ground fault.
Confirm the configuration settings andoperational efficacy 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 partsto 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. 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 exceptionally versatile, catering to pivotal sectors like construction, industry, and energy. Trusted by numerous prestigious engineering projects, our offerings have garnered the admiration and confidence of customers worldwide, reflecting our commitment to excellence and innovation.
The company adheres to an unwavering principle ofcustomer first, quality first, service first, reputation firstand remains relentless in its pursuit of innovation and development. We pride ourselves on exceptional technical strength, cutting-edge production technology, and extensive industry 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 comprehensive insights into product specifications and breaking capacity, we invite you to connect with our dedicated customer service team, who are ready to assist with your inquiries.
Q: What is the MOQ? Do you support sample ordering?
A: We proudly offer a remarkably low minimum order quantity of just 1 set, and we fully support sample ordering to cater to your unique requirements.
Q: How long is the warranty period? How to apply for warranty?
A: Our products are backed by a robust warranty period of one to two years. You can effortlessly apply for a warranty through our attentive customer service.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We are delighted to confirm our possession of CE and RoHS certifications, and we can readily provide these certificates 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 have had the honor of collaborating with esteemed clients such as the State Grid of China, Chint Group, and Xiaomi Group, showcasing our capability and reliability.