Wenzhou Kinee Electrical Co., Ltd. is one of the most reliable manufacturers and suppliers of ac electric circuit breaker in China. We warmly welcome you to wholesale ac electric circuit breaker for sale here from our factory. All customized products are with high quality and competitive price.
Product Introduction
The AC electric circuit breaker series miniature circuit breakers feature short-circuit protection, overload protection, and control functions. They can also be used for infrequent switching of lines and equipment under normal conditions. These products are suitable for low-voltage terminal distribution in industrial, commercial, high-rise, and residential buildings, energy, telecommunications, and infrastructure sectors, with AC 50/60Hz, rated voltage of 240/400V, and rated current up to 63A. They offer wide applicability, high stability, long service life, and excellent short-circuit and overload protection.
Technical Parameters
|
Product Model |
|
|
Meets standards |
IEC60898-1 |
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Rated voltage (V) |
AC 240/400V(1P,2P),AC 400V(2P,3P,4P) |
|
Rated current (A) |
1A,2A,3A;4A,6A,10A,16A,20A,25A,32A,40A,50A,63A |
|
Extreme number |
1P,2P,3P,4P |
|
Rated short-circuit breaking capacity Ics |
6kA |
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Rated ultimate short-circuit breaking capacity Icu |
6kA |
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Rated insulation voltage Ui |
500V |
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Rated impulse withstand voltage Uimp |
6kW |
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Instantaneous release characteristics |
B,C,D |
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Mechanical and electrical life (times) |
20,000 times |
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Electrical life (times) |
6000 times |
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Protection level |
IP20 |
Working Conditions
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Temperature |
The ambient air temperature should not exceed +40℃, should not be lower than -5℃, |
|
High |
The altitude of the installation site should not exceed 2000m; if higher altitudes are required, derating should be performed according to IEC 61439 Technical Requirements for Low-Voltage Electrical Appliances for High-Altitude Use under Special Environmental Conditions. |
|
Atmospheric conditions |
At +40℃, the relative humidity should not exceed 50%, and higher relative humidity is permissible at lower temperatures; at an ambient air temperature of 55℃, the relative humidity should be ≤95%. |
|
Resistance to damp heat |
The average minimum temperature of the wettest month shall not exceed +25°C, and the average maximum relative humidity of that month shall not exceed 90%, taking into account condensation on the product surface caused by temperature changes. |
|
Pollution level |
Level 3 |
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Installation Category |
Ⅱ,Ⅲ |
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Installation method |
Installed using TH35-7.5 type mounting rail. |
|
Installation conditions |
The inclination of the mounting surface from the vertical plane should not exceed 5°. |
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Places without significant vibration and impact |
|
Video
Features
The AC electric circuit breaker series miniature circuit breakers are characterized by their small size, simple structure, high breaking capacity, high reliability, comfortable handling, and imposing casing. They can be equipped with accessories such as auxiliary contacts, alarm contacts, shunt trip units, undervoltage trip units, overvoltage trip units, and over/undervoltage trip units. The auxiliary and alarm contacts have a width of 9mm, while other accessories have a width of 18mm.
Appearance And Installation Method
Questions and Answers
Q: What is the function ofMCB?
A: The main function of MCB is to protect an electrical circuit from over currents, such as overloads and short circuits. It automatically interrupts the flow of electricity when it detects an abnormal current condition, preventing damage to the circuit and enhancing safety.
Q: How does an MCB work?
A: MCB contains a bimetallic strip or an electronic trip device that responds to changes in current. When the current exceeds the rated capacity of the MCB, the bimetallic strip heats up and bends, causing the trip mechanism to activate and open the circuit. In electronic trip MCBs, the trip device senses the current and triggers the opening of the circuit electronically.
Q: What are the types ofMCBs based on trip characteristics?
A:MCBs are available in different trip characteristics, including Type B, Type C, and Type D. Type B MCBs are suitable for general-purpose loads, Type C for motors and inductive loads, and Type D for circuits with high inrush currents, such as transformers.
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