Air Circuit Breaker (ACB)

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.