Air Circuit Breaker (ACB) Factory

The CHW1 series frame circuit breaker (3P) provides protection for critical power systems. We provide ultra wide current coverage from 200A to 6300A, with a breaking capacity of up to 120kA. We are not only a manufacturer, but also a provider of system level solutions, deeply customizing reliable guarantees for you from parameters to applications.
The CHW1 Series 3P Frame Circuit Breaker is engineered to provide reliable protection for critical power systems in industrial, commercial, and utility applications. Designed with ultra-wide current coverage ranging from 200A to 6300A, it offers a high breaking capacity of up to 120kA, ensuring robust performance even under demanding conditions.

As a CE-certified fixed and drawer-style air circuit breaker, the CHW1 Series is suitable for a variety of installation configurations and can be customized to meet specific system requirements. Its modular design allows for easy integration into existing electrical panels, making it ideal for new installations as well as retrofitting projects.

Beyond supplying high-quality breakers, we offer system-level solutions tailored to your needs. From parameter optimization to application-specific customization, our team ensures reliable protection and operational efficiency for your electrical infrastructure. Each CHW1 breaker is rigorously tested to meet international standards, delivering long-term performance and safety.

Ideal for large-scale industrial facilities, commercial buildings, and critical power distribution networks, the CHW1 Series frame circuit breaker combines advanced protection features with flexibility and ease of installation. Whether you require a fixed or drawer-style configuration, this breaker provides dependable overload, short-circuit, and fault protection while supporting system customization for enhanced operational control.

Professional power core protection: CHW1 series 4P frame circuit breaker. Covering a wide current range of 200A to 6300A, with a maximum breaking capacity of up to 120kA, it can easily meet various demanding distribution and protection requirements. Supporting comprehensive parameter customization is a solid foundation for building a safe and stable power system.
The CHW1 series 4P frame circuit breaker is designed to serve as a stable foundation for modern power systems where safety and continuity are essential.

Covering a wide current range from 200A to 6300A, the CHW1 series adapts smoothly to diverse distribution requirements, from large commercial facilities to demanding industrial installations. During normal operation, it supports stable power flow, while in abnormal conditions it responds decisively to protect downstream equipment and minimize system disruption. This balance helps users maintain confidence in their power infrastructure without constant manual intervention.

The 4-pole frame design offers enhanced protection in systems where comprehensive control and isolation are required. Its robust structure is suited for long-term operation in challenging environments, supporting reliable performance across varying load conditions.

One of the key strengths of the CHW1 series is its support for comprehensive parameter customization. This flexibility allows users to configure protection settings that closely match real-world system needs, forming a tailored and dependable power protection solution.

featuring a 3-phase electronic protection controller — a high-performance low-voltage power distribution device with a built-in digital display, push-button control (red stop/green start), and a dedicated energy storage indicator. Designed for medium-to-large power systems (e.g., industrial plants, commercial buildings, photovoltaic power stations), it integrates precise overload/short-circuit protection, real-time electrical parameter monitoring, and fault recording functions. Its modular design supports flexible configuration (e.g., drawout/fixed installation) and can replace traditional frame breakers with enhanced smart management capabilities, making it ideal for modern intelligent power distribution networks.

The CHW1-1600 3P 1600A Intelligent Frame Breaker is designed for modern power distribution systems that demand accuracy, visibility, and smart control. Built around a 3-phase electronic protection controller, it offers reliable low-voltage protection while supporting intelligent system management.

This breaker integrates precise overload and short-circuit protection with real-time electrical parameter monitoring, allowing users to clearly understand system operating conditions at a glance. The built-in digital display and push-button controls—including red stop and green start buttons—make daily operation intuitive, reducing the risk of misoperation during routine use or maintenance. A dedicated energy storage indicator further improves operational awareness and safety.

Designed for medium to large-scale power systems such as industrial plants, commercial buildings, and photovoltaic power stations, the CHW1-1600 supports stable operation under complex load conditions. Its modular structure allows for flexible configuration, including drawout or fixed installation, enabling seamless integration into existing power distribution setups.

ACB CHW1-2000 series air circuit breaker , designed for electrical system protection and control. Key components include: a fault reset button, breaking button, switching knob (for circuit control), energy storage handle, closing/opening indicator window (to show operating status), and energy release instruction window. It also features a digital display for real-time monitoring, making it suitable for medium-to-large power distribution systems (e.g., industrial, commercial facilities) requiring reliable overload/short-circuit protection and operational visibility.

The ACB CHW1-2000 series air circuit breaker is designed to provide reliable protection and precise control for modern electrical power distribution systems. Built for medium to large-scale applications, it supports stable operation in industrial plants, commercial facilities, and other demanding environments where safety and visibility are critical.

This series is equipped with a comprehensive set of operational components, including a fault reset button, breaking button, circuit switching knob, and an energy storage handle. Clear closing and opening indicator windows allow users to instantly confirm the operating status, while the energy release instruction window improves safety during operation and maintenance. These features help reduce misoperation and simplify daily system management.

A built-in digital display provides real-time monitoring of key electrical parameters, giving users greater awareness of system conditions and enabling faster response to abnormal situations. The breaker delivers dependable overload and short-circuit protection, supporting long-term equipment safety and system stability.

The CHW1-6300 3P ACB supports both drawout and fixed installation options, allowing flexible integration into different power distribution setups. With its robust design and intelligent operational visibility, the CHW1 series air circuit breaker is a dependable solution for modern power distribution systems requiring reliability, control, and adaptability.

The CHW1-2000~6300 (DW45)/CHW1-1600-3P/4P-200A~1600A series of intelligent universal circuit breakers (hereinafter referred to as circuit breakers) are available in both drawer-type and fixed-type versions. They are suitable for use in power distribution networks operating at 50/60Hz AC, with a rated operating voltage of 400V to 690V and a rated operating current of 400 to 6300A. They distribute power and protect circuits and power equipment from overloads, undervoltages, short circuits, ground faults, and other hazards.

Application and Scope of Use:
The CHW series intelligent universal circuit breakers (hereinafter referred to as circuit breakers) are suitable for use in power distribution networks operating at 50/60Hz AC, with a rated operating voltage of 400V to 690V and a rated operating current of 400 to 6300A. They distribute power and protect circuits and power equipment from overloads, undervoltages, short circuits, ground faults, and other hazards. The circuit breakers utilize intelligent controllers with precise selective protection and multifunctionality, offering comprehensive protection features. They are particularly suitable for distribution networks that require improved power supply reliability and prevent unnecessary power outages. The 2H and 3H intelligent controllers feature a communication interface for easy connection to the fieldbus, enabling remote sensing, remote adjustment, remote control, and remote communication, meeting the requirements of automated control. A leakage current transformer and corresponding intelligent controller provide leakage protection. Circuit breakers with a rated operating current of 1000A or less can also be used in 50Hz, 400V AC networks to protect motors from overload, short circuit, undervoltage, and ground faults. Under normal conditions, they can also be used for infrequent motor starting.

Circuit breakers have an isolation function, symbolized by "/*."

The circuit breaker complies with the following standards:
IEC 60947-1 and GB/T 14048.1 Low-voltage switchgear and controlgear - General principles
IEC 60947-2 and GB/T 14048.2 Low-voltage switchgear and controlgear - Low-voltage circuit breakers
IEC 60947-4-1 and GB/T 14048.4 Low-voltage switchgear and controlgear - Electromechanical contactors and motor starters
GB/T 2421.1 Overview and Guidelines for Environmental Testing of Electrical and Electronic Products
GB/T 14597 Climatic and Environmental Conditions at Different Altitudes for Electrical Products

Installation Environment Requirements:
Ambient Temperature: -5°C to +40°C, with a 24-hour average temperature not exceeding +35°C. Derating is required for ambient temperatures above +40°C. Refer to the user manual for the derating factor.
Relative Humidity: At a maximum temperature of +40°C, the relative humidity should not exceed 50%. Higher relative humidity is permitted at lower temperatures, for example, 90% at 20°C.
Altitude: ≤2000m. For altitudes exceeding 2000m, refer to the user manual for derating factors.
Installation Requirements: Install the circuit breaker at a vertical inclination of ≤5°.
Pollution Degree: Level 3
Use Category: B
Applicable Electromagnetic Environment: B
Protection Level: When the circuit breaker is installed in a cabinet with a door frame, the protection level reaches IP40.
The circuit breaker should be installed in a dry environment free of conductive dust, corrosive gases, and explosive media.

Product Features
Compliant Standards
·GB/T14048.1 General
·GB/T14048.2 Circuit Breakers
·IEC 60947-1 General
·IEC 60947-2 Circuit Breakers

Ambient Temperature
·This series can operate for extended periods within normal ambient and operating temperatures between -5°C and 40°C.
·For operating temperatures exceeding 40°C (over 60°C for motor protection), please refer to the temperature derating requirements or contact us. Storage temperature: -20°C to 70°C

Altitude
The normal operating altitude is not to exceed 2000m.
If installation is required at an altitude exceeding 2000m, refer to the altitude derating factor table.
Pollution Degree
This product operates in pollution degree 3 environments (industrial environments) as defined in IEC 60947-1 and 60664-1.
Humidity

Normal operation requires the following:
At an ambient air temperature of +40°C, the relative humidity must not exceed 50%. If the temperature is lower, operation at higher relative humidity is permitted.
The average relative humidity in the wettest month is 90%.
The impact of condensation on the product surface on product performance must be considered.
Protection Degree
The circuit breaker body has an IP protection rating of IP20.
Circuit breakers installed in switchgear:
Circuit breakers with toggle handles: IP40
Circuit breakers with electric operating mechanisms: IP40

The DW15 series low-voltage universal electric circuit breakers are high-performance electrical devices widely used in industrial and commercial applications. Their primary function is to protect circuits from faults such as overloads and short circuits, ensuring the safe operation of power systems.

These circuit breakers feature intelligent control capabilities, enabling remote control and automated management through electric operation. Their compact design facilitates installation in distribution cabinets, saving space. Furthermore, they offer excellent breaking capacity, enabling rapid power interruption in the event of a fault, minimizing equipment damage and outage duration.

The DW15 series circuit breakers also offer a variety of protection functions, such as overcurrent and undervoltage protection, allowing for flexible configuration to meet diverse application requirements. Their reliability and stability make them an indispensable component in low-voltage power distribution systems.