Air Circuit Breaker WEW1-2000 ACB: Withdrawable and Fixed Type
The Air Circuit Breaker (ACB) model WEW1-2000 stands out as a high-performance solution for managing and protecting electrical circuits. Designed to handle currents up to 2000A, this ACB offers both withdrawable and fixed types, making it versatile for various applications. With its robust features, including a rated working voltage of 400V/690V and options for 3P (three-pole) or 4P (four-pole) configurations, the WEW1-2000 is engineered to ensure the safety and reliability of electrical systems in diverse settings.

Overview of the WEW1-2000 ACB
The WEW1-2000 ACB is a sophisticated device used to protect electrical circuits from overloads, short circuits, and other faults. It operates by interrupting the circuit when abnormal conditions are detected, thus preventing damage to equipment and ensuring safety. The breaker's design allows it to handle high current loads and provides robust protection for both low and high voltage systems.
Key Specifications
- Rated Current:2000A
- Number of Poles:3P (Three-Pole) / 4P (Four-Pole)
- Rated Working Voltage:400V / 690V

Types of WEW1-2000 ACB
The WEW1-2000 ACB is available in two main types: withdrawable and fixed. Each type has its own set of features and advantages.
1. Withdrawable Type
The withdrawable type of the WEW1-2000 ACB is designed for flexibility and ease of maintenance. This type allows the breaker to be easily removed from its operating position without disturbing the connected circuits. Key features include:
- Ease of Maintenance:The withdrawable design facilitates quick and safe replacement or servicing of the breaker without disconnecting the entire system.
- Modular Design:It supports modular operation, enabling the breaker to be pulled out for inspection or repair and then reinserted into its housing.
- Reduced Downtime:The ability to withdraw the breaker minimizes downtime during maintenance, ensuring that operations can continue with minimal interruption.
2. Fixed Type
The fixed type of the WEW1-2000 ACB is installed in a stationary position and is not designed to be removed from its mounting. Key features include:
- Robust Construction:Fixed type breakers are typically more robust and are suited for permanent installations where frequent maintenance is not required.
- Simplified Installation:The fixed type is generally easier to install as it does not involve mechanisms for withdrawal and insertion.
- Cost-Effective:The fixed type is often more cost-effective compared to the withdrawable type, making it a suitable option for applications where flexibility is less critical.
Applications of 400V Air Circuit Breakers
The versatility and robustness of the 400V air circuit breakers make them suitable for a wide range of applications across various industries. Here's a closer look at some common applications:
1. Industrial Installations
In industrial settings, the WEW1-2000 ACB is crucial for protecting critical machinery, motors, and other electrical equipment from overloads and short circuits. Key benefits in industrial applications include:
- Protection for Heavy Loads:Industrial environments often involve high-load equipment. The WEW1-2000 ACB can handle up to 2000A, making it suitable for these demanding applications.
- Ensuring Operational Integrity:By preventing electrical faults, the ACB helps maintain the operational integrity of industrial processes, avoiding costly downtime and ensuring smooth operations.
- Safety of Personnel:Protecting machinery from electrical faults also enhances the safety of personnel working in the industrial environment.
2. Commercial Buildings
In commercial buildings such as office complexes, retail establishments, and more, the WEW1-2000 ACB plays a vital role in safeguarding the electrical distribution systems. Key benefits include:
- Protecting Lighting and HVAC Systems:The breaker ensures the reliable operation of lighting systems, HVAC units, and other essential electrical loads in commercial buildings.
- Enhancing Electrical Safety:By safeguarding the electrical infrastructure, the ACB contributes to the overall safety of the building's electrical system, protecting against potential faults that could disrupt business operations.
- Supporting Building Reliability:With its high interrupting capacity and durability, the WEW1-2000 ACB ensures that the electrical system remains reliable and performs efficiently.
Technical Features
The WEW1-2000 ACB is equipped with several advanced features that enhance its performance and reliability:
1. High Interrupting Capacity
High Interrupting Capacity refers to the ACB's ability to handle and safely interrupt very high fault currents without sustaining damage. When a fault occurs, such as a short circuit, the current flowing through the circuit can be extremely high. If not properly managed, this can cause significant damage to electrical equipment and increase the risk of fires or other hazards.
The WEW1-2000 ACB is designed to manage these high fault currents effectively. By interrupting the current quickly and safely, it prevents damage to the electrical system and maintains overall safety. This high interrupting capacity is crucial in environments with large electrical loads and high fault potential, such as industrial plants and large commercial buildings.
2. Adjustable Trip Settings
Adjustable Trip Settings allow the ACB to be customized to fit the specific requirements of an electrical system. These settings control the conditions under which the breaker will trip (or disconnect the circuit).
- Thermal Trip Setting:This setting responds to sustained overloads. By adjusting this setting, the breaker can be configured to trip at different levels of sustained overcurrent, ensuring that it provides protection tailored to the specific needs of the system.
- Magnetic Trip Setting:This setting responds to short circuits by tripping instantly. Adjustable magnetic settings ensure that the breaker can handle varying fault currents and respond appropriately to different short circuit conditions.
The ability to adjust these settings helps optimize the protection of the electrical system, ensuring that the breaker trips only under appropriate conditions and prevents unnecessary interruptions.
3. Thermal and Magnetic Protection
Thermal and Magnetic Protection mechanisms are integral to the operation of the WEW1-2000 ACB:
- Thermal Protection:This mechanism is designed to protect against sustained overloads. It uses a bimetallic strip that heats up as the current increases. When the strip reaches a certain temperature, it bends and trips the breaker, disconnecting the circuit. This type of protection is important for addressing overloads that develop gradually over time, such as those caused by excessive load or faulty equipment.
- Magnetic Protection:This mechanism provides instantaneous protection against short circuits. It employs an electromagnetic coil that generates a magnetic field when a short circuit occurs. This field moves a plunger or mechanism that quickly trips the breaker, disconnecting the circuit almost immediately. Magnetic protection is essential for rapid response to short circuits, preventing damage and minimizing the risk of fires.
4. Durable Construction
Durable Construction refers to the materials and design used to build the ACB, which contribute to its longevity and reliability:
- High-Quality Materials:The WEW1-2000 ACB is constructed using robust materials that are resistant to wear and environmental factors. This includes the breaker's casing and internal components, which are designed to withstand physical stress, temperature variations, and other conditions.
- Environmental Resistance:The breaker is built to resist environmental challenges such as dust, moisture, and corrosive elements. This ensures that it performs reliably even in harsh environments, such as industrial facilities or outdoor installations.
- Robust Design:The design of the ACB incorporates features that enhance its durability and effectiveness. This includes mechanisms for high interrupting capacity and reliable trip functions, ensuring that the breaker remains effective throughout its operational life.
Conclusion
The Air circuit breaker WEW1 2000 ACB breaker withdrawable type acb fixed type is a vital component in modern electrical distribution systems, offering reliable protection for high-current applications. With options for both withdrawable and fixed types, it provides flexibility and robustness to meet the demands of various industries. Its high interrupting capacity, adjustable settings, and durable construction make it suitable for a wide range of applications, from industrial installations to commercial buildings.
By ensuring the safety and reliability of electrical circuits, the WEW1-2000 ACB plays a crucial role in maintaining the operational integrity of electrical systems.

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