AIR CIRCUIT BREAKER
MTW1-2000,MTW1-3200,MTW1-4000,MTW1-6300,MTW1-7500
MTW1 series intelligent breaker is applicable for distribution network of AC 50Hz, rated voltage of 400V and 690V, and rated current of 400A~7500A, to distribute electric energy and prevent the circuit and power equipments from harm of overload, under-voltage, short circuit and single-phase earth etc.Provided with intelligent protecting function and precise selective protection, breaker can enhance the dependability of power supply and avoid
unwanted power cut.The circuit breaker has an impulse withstand voltage of 8000V at an altitude of 2000 meters (adjusted according to standards for different altitudes, with a maximum not exceeding 12000V).
This product accords with the standard of GB14048. 2 " low-voltage switchgear and controlling equipment,the low-voltage circuit breaker" and IEC60947-2 "low-voltage switchgear and controlling equipment the second part: low-voltage circuit breaker ".
-Style: Drawer style
-Style: Fixed style
-Model Meaning
Pole number(4P means 4 Pole, 3P means 3 Pole)
Rated Current
Design code
Air Circuit Breaker
Enterprise 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 |
|
|
|
COPPER BAR
Red copper silver plated material
Good heat dissipation performance
Corrosion resistance
Widening and thickening of copper bar size
Compliant with standards
CONDUCTIVE SYSTEM
The number of contact pieces is determined by the current
The moving contact is made of copper plated silver material
The moving contact is made of silver dots,Good conductivity
-Internal components
Conductive parts:
-Copper bars, contacts
Secondary control part:
-Wiring terminals, mechanisms, controllers, motors, coils,current transformer
Arc extinguishing section:
-interrupter
-Fixed and drawer type construction
Installation Instructions
-Installed inside the panel
Fixed Type Installation:
The circuit breaker is directly fixed on the distribution cabinet or installation board and cannot be moved.
Suitable for occasions that do not require frequent replacement or maintenance.
Easy installation and low cost.
Drawout type installation:
The circuit breaker is installed on a withdrawable frame for easy maintenance, testing, and replacement.
Suitable for occasions that require frequent operation or maintenance.
Installation is complex and costly, but it offers greater flexibility.
Plug in type installation:
The circuit breaker is connected to the busbar through plug-in connection, making it easy to install and replace quickly.
Suitable for situations that require quick replacement.
-Secondary wiring method
1 and 2: Connect the intelligent controller
27 and 28: Connect the undervoltage coil
29 and 30: Connect the shunt coil
31 and 32: Connect closed coils
34 and 35: Connect the energy storage motor
Mechanical operation test:
Check whether the mechanical operation of the circuit breaker is flexible and reliable.
Test the operation functions such as closing, opening, and energy storage.
Electrical performance testing:
Insulation resistance test: Use a megohmmeter to measure the insulation resistance of the main and auxiliary circuits, ensuring that they meet the standard (usually ≥ 1M Ω).
Power frequency withstand voltage test: Apply rated power frequency voltage (such as 2500V/1min) to the main circuit and auxiliary circuit to check the insulation performance.
Contact resistance test: Measure the contact resistance of the main contact to ensure that it is below the specified value (usually micro ohm level).
Protection function test:
Test the action values and time of protection functions such as overload, short circuit, and ground fault.
Verify the settings and functionality of the intelligent release device.
Outer packaging:
Strong wooden boxes are usually used to provide sufficient mechanical strength.
Wooden crate suitable for large circuit breakers or international transportation
Inner packaging:
Wrap the circuit breaker with buffer materials such as foam pad, bubble film or pearl cotton to prevent vibration and collision.
For large circuit breakers, the packaging box may adopt a layered design, with accessories (such as manuals, tools, spare parts) placed on the upper layer
Our production line
Mingtuo Electric not only holds an important position in the domestic market, but also gradually expands into the international market. Its products are widely used in fields such as construction, industry, and energy, and have gained the trust and favor of numerous engineering projects.
The company adheres to the principle of "customer first, quality first, service first, reputation first" and constantly pursues the concept of innovation and development. The company has strong technical strength, advanced production technology, mature experience in research and development, and is known for its professionalism and technological leadership. It has a complete set of the most advanced production, testing, and inspection equipment in China.
FAQ
Q: What is the product voltage/current range? What's the breaking ability?
A:Please consult customer service for details
Q: What is the MOQ? Do you support sample ordering?
A:The minimum order quantity is 1 set, which can support sample ordering
Q: How long is the warranty period? How to apply for warranty?
A: Product warranty for one to two years. Apply directly to customer service
Q: Do you have CE, RoHS, UL and other certifications? Can you provide a certificate?
A: We have CE and RoHS certificates and can provide certificates
Q: Does the price include tax/shipping?
A: The price does not include shipping/tax.
Q: What famous clients or project cases have you worked with?
A:State Grid of China, Chint Group, Xiaomi Group
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