AIR CIRCUIT BREAKER
MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
The MTW1 series intelligent breaker is masterfully engineered to meet the rigorous demands of a robust distribution network in AC 50Hz environments, supporting a rated voltage of 400V and 690V, with a rated current range spanning from 400Ato7500A. It is meticulously designed to not only distribute electric energy with exceptional efficiency but also provide robust protection for circuits and power equipment against potential damage due to overload, under-voltage, short circuit and single-phase earth faults. This breaker is equipped with state-of-the-art intelligent protection functions and precise selective protection, significantly boosting the reliability of your power supply while effectively preventing
undesirable power outages.The circuit breaker features a remarkable impulse withstand voltage capacity of8000V at altitudes up to 2000 meters, with calibration to accommodate varying altitudes, ensuring a maximum that does not exceed 12000V.
This product meets and exceeds the stringent standards set by GB14048.2 for low-voltage switchgear and control equipment, including low-voltage circuit breakers, and is in full compliance with IEC60947-2 standards for low-voltage switchgear and control equipment, specifically part two: low-voltage circuit breakers.
-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: Immerse yourself in the cutting-edge control mechanisms that epitomize precision and unwavering reliability in the 800A High Breaking Capacity Air Circuit Breaker Fixed Type Design. Uncover the intricate synergy of each meticulously crafted component working in harmony to deliver unmatched performance and ensure paramount 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
- Meticulously integrated within the panel, the installation ensures a flawless alignment with your current system, embodying elegance and efficiency.
Fixed Type Installation:
The circuit breaker is securely anchored on the distribution cabinet or installation board , remaining steadfastly immovable to guarantee enduring power and unwavering performance.
This installation approach is tailored for environments that don't require frequent replacement or intensive upkeep, ensuring dependable stability.
This method guarantees a seamless installation process while maintaining costs at a minimal level, providing a cost-effective solution.
Drawout Type Installation:
The circuit breaker is masterfully mounted on a withdrawable frame, allowing for effortless maintenance, comprehensive testing, and easy replacement.
Ideal for environments demanding frequent operation or routine maintenance.
Though the installation is complex and may entail higher costs, it delivers exceptional flexibilityto accommodate dynamic operational needs.
Plug-in Type Installation:
The circuit breaker connects seamlessly to the busbar through an innovative plug-in system, simplifying installation and expediting replacement.
This approach is ideal for situations that require swift and efficient replacement.
-Secondary Wiring Method
1 and 2: Carefully connect the intelligent controller to ensure optimal and peak performance.
27 and 28:Guarantee an accurate connection to the undervoltage coil to preserve system integrity and reliability.
29 and 30: Securely link the shunt coil to ensure reliable and consistent operation.
31 and 32:Efficiently connect closed coils to enhance overall functionality and operational excellence.
34 and 35: Connect the energy storage motor to secure uninterrupted power management.
Meticulous Mechanical Operation Test:
Thoroughly examine the seamless fluidity and perfect flexibility and unwavering reliability.
Ensure that operational functions are impeccably flawless by testing key actions like smooth, seamless closing, rapid, prompt opening, and optimized energy storage efficiency.
Comprehensive Electrical Performance Testing:
Conduct a rigorous insulation resistance assessment using a highly accurate megohmmeter to measure insulation resistance across both main and auxiliary circuits, ensuring adherence to the highest standards with values typically ≥ 1M Ω.
Implement a demanding power frequency withstand voltage test by applying rated power frequency voltage to the main and auxiliary circuits, such as 2500V for 1 minute, to verify outstanding insulation performance.
Execute a precise contact resistance evaluation to accurately determine the contact resistance of the main contact, ensuring it remains below the specified micro ohm threshold, indicative of peak performance.
Comprehensive Protection Function Test:
Diligently test the critical action thresholds and swift response times of protection functions including overload, short circuit, and ground fault.
Systematically verify the precision adjustment settings andstrong, robust functionality of the intelligent release device to ensure unmatched protection capabilities.
Outer packaging:
To ensure unparalleled protection, we employ robust wooden boxes which are meticulously crafted to deliver exceptional mechanical strength and durability.
These resilient wooden crates are the perfect choice for accommodating our heavy-duty circuit breakers or for long-distance international shipping needs.
Inner packaging:
Each circuit breaker is meticulously wrapped with premium-grade buffer materials such as foam pads, bubble film or pearl cotton to effectively mitigate any vibration and prevent unwanted collisions during transit.
For large circuit breakers, the packaging is ingeniously designed with a sophisticated layered approach. Accessories including manuals, tools, and spare partsare thoughtfully placed on the upper layer for effortless access and organization.
Our production line
Mingtuo Electric Mingtuo Electric is not just a leader in the domestic market; it is a rising star on the global stage. Our exceptional products are utilized across a myriad of sectors, including construction, industry, and energy. They have earned us a trusted reputation in numerous prestigious engineering projects worldwide, establishing us as a preferred partner.
The company adheres to the principle of customer first, quality first, service first, reputation first, and enthusiastically embraces the concept of innovation and development. With an unwavering commitment to excellence, the company wields strong technical strength, cutting-edge production technology, and seasoned expertise in research and development. Celebrated for our professionalism and technological leadership, we proudly offer a complete suite of the most advanced production, testing, and inspection equipment available in China, ensuring the highest standards of quality.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A: For precise details on voltage, current ranges, and breaking abilities, please feel free to consult our expert customer service team, who are eager to assist you.
Q: What is the MOQ? Do you support sample ordering?
A: The minimum order quantity is one set. We are delighted to offer sample ordering, allowing you to assess our product excellence before making a full commitment.
Q: How long is the warranty period? How to apply for warranty?
A: Our products are backed by a warranty lasting from one to two years. Should you need to file a warranty claim, our dedicated customer service team is ready to provide seamless assistance.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We take pride in holding CE and RoHS certifications and are more than happy to provide these upon request.
Q: Does the price include tax/shipping?
A: Please be aware that our prices are quoted exclusive of shipping and tax to ensure full transparency.
Q: What famous clients or project cases have you worked with?
A: We are privileged to have partnered with illustrious clients such as the State Grid of China, Chint Group, and Xiaomi Group, underscoring our exceptional reputation and unwavering reliability.