AIR CIRCUIT BREAKER
Models: MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, MTW1-7500
The MTW1 series of intelligent breakers are expertly designed for use in AC 50Hz distribution networks, with a rated voltage of 400V and 690V, and a rated current spanning from 400Ato7500A. This series is engineered to efficiently distribute electrical energy while safeguarding circuits and power equipment against the risks of overload, under-voltage, short circuit and single-phase earth faults . Equipped with advanced intelligent protection features and precise selective functionality, these breakers significantly improve power supply reliability by minimizing
the chances of unexpected power outages.The circuit breaker is designed to withstand impulse voltages up to8000V at elevations of up to 2000 meters (customizable according to altitude standards, peaking at 12000V).
This product adheres strictly to the standards of GB14048.2 which govern low-voltage switchgear and controlling equipment, as well as standards for low-voltage circuit breakers per IEC60947-2 requirements for low-voltage switchgear and controlling equipment, particularly the second part dealing with low-voltage circuit breakers.
-Configuration: Drawer style
-Configuration: Fixed style
-Model Identification Guide
Pole Number (4P represents 4 Pole, 3P signifies 3 Pole)
Rated Current Specification
Design Code
Air Circuit Breaker
Enterprise Identification Code

-Control part
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 Grade COPPER BAR
High-Quality Red CopperLustrous Silver Expertly Plated Material
Exceptional Heat Dissipation Performance
Outstanding Corrosion Resistance
Strategic Widening and Robust Thickening of Copper Bar Size
Meticulously Compliant with Standards
Efficient CONDUCTIVE SYSTEM
The precise number of contact pieces is meticulously determined by the current capacity
The moving contact is expertly crafted from copper plated with premium silver material
The moving contact is crafted with silver dots, ensuring excellent conductivity
-Precision-engineered Internal Components
Conductive parts include:
-High-performance copper bars, and contacts
Advanced Secondary Control Part:
-Comprehensive wiring terminals, sophisticated mechanisms, intelligent controllers, powerful motors, efficient coils, and current transformer
Advanced Arc Extinguishing Section:
-State-of-the-art interrupter
-Available in Fixed and Drawer Type Construction
Installation Instructions
-Installed inside the panel, respecting the best engineering practices.
Fixed Type Installation:
The circuit breaker is securely directly fixed on the distribution cabinet or installation board and is designed for immobility.
Ideal for environments where frequent replacement or maintenance is not needed.
This method ensures easy installation and keeps costs remarkably low.
Drawout Type Installation:
The circuit breaker is expertly installed on a withdrawable frame, facilitating easy maintenance, seamless testing, and swift replacement.
Perfect for situations necessitating frequent operation or regular maintenance.
While installation is intricate and comes with a higher cost, it offers unmatched flexibility and adaptability.
Plug in Type Installation:
The circuit breaker seamlessly connects to the busbar through a plug-in connection, allowing for quick and effortless installation and replacement.
Perfectly suitable for scenarios demanding rapid replacements.
-Secondary Wiring Method
1 and 2: Establish a connection for the intelligent controller
27 and 28:Connect the undervoltage coil with precision
29 and 30: Securely connect the shunt coil
31 and 32:Ensure connection of closed coils
34 and 35: Link the energy storage motor efficiently
Mechanical Operation Test: A Dance of Precision and Reliability
Check the mechanical operation of the circuit breaker to ensure it performs with effortless flexibility and unwavering reliability.
Test the comprehensive operation functions, including flawless closing, seamless opening, and efficient energy storage.
Electrical Performance Testing: The Backbone of Circuit Integrity
Insulation Resistance Test: With a precision megohmmeter, measure the insulation resistance of both main and auxiliary circuits, guaranteeing they adhere to the standard threshold (typically ≥ 1M Ω).
Power Frequency Withstand Voltage Test: Apply the designated power frequency voltage (such as 2500V/1min) to both main and auxiliary circuits to rigorously assess their insulation capabilities.
Contact Resistance Test: Conduct a meticulous measurement of the main contact's resistance, ensuring it remains below the predefined level (commonly in the micro ohm range).
Protection Function Test: Safeguarding the System with Precision
Evaluate the action values and timing of protection features like overload, short circuit, and ground fault.
Verify the settings andefficient functionality of the advanced intelligent release device.
Outer packaging:
Our approach to packaging ensures the highest durability with: robust wooden boxes, meticulously crafted to provide exceptional mechanical strength and reliability.
These wooden crates are meticulously designed for large circuit breakers, making them ideal for international transportation, ensuring safe and secure delivery.
Inner packaging:
To safeguard the circuit breaker, we envelop it with premium buffer materials such as resilient foam pads, protective bubble film or delicate pearl cotton, carefully designed to mitigate vibration and prevent collision.
For substantial circuit breakers, our packaging solutions may feature a sophisticated layered design, where accessories (including user manuals, essential tools, and spare parts) are conveniently positioned on the upper layer,
demonstrating the efficiency and attentiveness of our production line.
Mingtuo Electric Mingtuo Electric not only commands a significant presence in the domestic arena, but it is also ambitiously expanding its horizons internationally. Its innovative products have become integral to industries such as construction, industry, and energy, earning the trust and admiration of numerous prestigious engineering projects worldwide.
The company adheres to the unwavering principle ofputting the customer first, ensuring top-tier quality, delivering exceptional service, and maintaining a sterling reputation above all.Driven by a relentless pursuit of innovation and development, the company possesses remarkable technical prowess, cutting-edge production technology, and vast experience in research and development. Renowned for its professionalism and technological leadership, it boasts a comprehensive 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, kindly reach out to our dedicated customer service team.
Q: What is the MOQ? Do you support sample ordering?
A: Our minimum order quantity is just 1 set, and we are pleased to support sample orders.
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 warranty application, please directly contact our efficient customer service team.
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: Yes, we proudly hold CE and RoHS certifications and can provide the necessary certificates upon request.
Q: Does the price include tax/shipping?
A: Please note that the quoted price is exclusive of shipping and tax.
Q: What famous clients or project cases have you worked with?
A: We have proudly collaborated with eminent clients such as the State Grid of China, Chint Group, and Xiaomi Group.