Intelligent Universal Circuit Breaker Manufacturer

To cope with the complex and ever-changing power environment, the CHM1 series 3P circuit breaker is born to meet the demand. The wide current and breaking capacity (63A-1600A/25-100kA) are just the starting point. We are more willing to be your solution partner, relying on the strength of our factory to customize voltage, current, and breaking capacity for you, and jointly create the ideal power protection configuration.
The CHM1 Series 3P Circuit Breaker is designed to tackle the challenges of complex and ever-changing power environments. With a wide current range of 63A to 1600A and a breaking capacity of 25kA to 100kA, it offers robust protection for industrial and commercial applications. Leveraging our factory’s expertise, we provide customization of voltage, current, and breaking capacity, allowing you to create the ideal power protection configuration tailored to your system’s needs.

Reliable CE Certified MCCB

The 250A 3P Molded Case Circuit Breaker (MCCB) is CE certified, ensuring high-quality, standard-compliant performance. Designed for dependable overload and short-circuit protection, it is perfect for critical power distribution systems. Together, these breakers provide versatile, reliable, and fully customizable solutions, making them the preferred choice for professionals seeking safe and stable electrical protection.

CHM1 series 3P plastic case circuit breaker: designed for harsh working conditions, with a current coverage of 10A to 1600A and a breaking capacity of up to 100kA. We provide deep customization and OEM services, making us your reliable power solution partner.
The CHM1 Series 3P Plastic Case Circuit Breaker is engineered for harsh working environments, covering a wide current range from 10A to 1600A and offering a breaking capacity of up to 100kA. Its robust design ensures reliable protection against overloads and short circuits, while deep customization and OEM services allow tailored solutions to meet your specific power system requirements.

High-Capacity CE Certified MCCB

The 630A 3P Molded Case Circuit Breaker (MCCB) is CE certified, providing guaranteed quality and dependable performance. Ideal for industrial and commercial power distribution, it ensures safe and stable operation under demanding conditions. Both products combine advanced protection technology and durable construction, making them trusted choices for professionals seeking reliable electrical safety solutions.

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 delivers professional-grade power core protection, supporting a wide current range from 200A to 6300A. With a maximum breaking capacity of up to 120kA, it ensures reliable safety and stability for industrial and commercial power distribution systems. Its comprehensive parameter customization allows tailored protection to meet diverse electrical requirements, making it an ideal choice for critical applications.

High-Performance 3P MCCB

The 250A 3P Molded Case Circuit Breaker (MCCB) is CE certified, offering dependable overload and short-circuit protection. Designed for high-performance operation, it provides long-lasting reliability and ensures safe power management in demanding environments. Both products combine robust construction with advanced protection technology to safeguard your electrical systems efficiently.

CHM1 series 3P molded case circuit breaker. The current covers 10A-1600A, with a breaking capacity of up to 100kA. With excellent performance and flexible parameter customization capabilities, it is an ideal choice for matching harsh working conditions and achieving precise protection.
CHM1 series 3P molded case circuit breaker. The current covers 10A-1600A, with a breaking capacity of up to 100kA. With excellent performance and flexible parameter customization capabilities, it is an ideal choice for matching harsh working conditions and achieving precise protection.
The CHM1 Series 3P Molded Case Circuit Breaker (MCCB) is engineered to deliver reliable protection and optimal performance for industrial, commercial, and utility applications. Covering a wide current range from 10A to 1600A, and with a high breaking capacity of up to 100kA, the CHM1 MCCB ensures robust protection against overloads, short circuits, and electrical faults.

CE-certified and factory-direct, the CHM1 Series MCCB guarantees high quality and fast worldwide delivery. Its modular and compact design allows for flexible installation in various electrical panels, while its customizable parameters make it ideal for harsh working conditions, ensuring precise protection tailored to your specific power system requirements.

The VXC1-12 series indoor trolley-mounted high-voltage vacuum circuit breaker is a three-phase AC 50Hz, 12kV rated indoor switchgear. It is suitable for control and protection in industrial and mining enterprises, power plants, substations, and electrical facilities, and is ideal for frequent operation. The operating mechanism is integrated with the circuit breaker body, allowing it to be used as a fixed installation unit or as a trolley unit with a dedicated propulsion mechanism. The main circuit utilizes an integrally sealed column, resulting in a compact, highly reliable, and maintenance-free circuit breaker. It is compatible with center-mounted trolley-mounted switchgear such as the KYN28A-12 (GZS), and can also be used with XGN series fixed switchgear in fixed configuration.

Normal Operating Environment
Ambient temperature: not exceeding 40°C, not below -10°C (storage and transportation at -30°C permitted).
Altitude: not exceeding 1000m. (If higher altitude is required, the rated insulation level will increase accordingly.)
Relative humidity: Daily average not exceeding 95%, saturated vapor pressure: Daily average not exceeding 2.2 × 10-11 MPa, monthly average not exceeding 1.8 × 10-11 MPa.
Seismic intensity: Not exceeding magnitude 8.
A location free from fire, explosion, severe contamination, chemical corrosion, or severe vibration.

The VZF-12 center-mounted, sealed vacuum load switch-fuse combination (hereinafter referred to as the vacuum switch) is a next-generation vacuum switchgear developed based on a unique design concept and market demand. It is widely used in indoor armored air-insulated switchgear and complies with standards such as GB3804-2004 and GB16926-1997.

Under normal operating conditions, within the technical parameters of the vacuum switch, the VZF-12 center-mounted, sealed vacuum load switch-fuse combination ensures safe and reliable operation in power grids of the corresponding voltage level.

Normal Operating Environment
1. Ambient Temperature: +40°C to -25°C.
2. Ambient Humidity: Daily Average Relative Humidity: ≤95%, Monthly Average Relative Humidity: ≤90%.
3. Daily Average Saturated Vapor Pressure: ≤2.2 x 10-3 MPa.
4. Monthly Average Saturated Vapor Pressure: ≤1.8 x 10-3 MPa.
5. Altitude: Not exceeding 1500m
6. Earthquake intensity: Not exceeding 8 degrees.
7. Applicable location: No dripping water, no risk of stagnation or explosion, no chemically corrosive gases, and no severe vibration.
8. If the product's operating environment exceeds the above requirements, the user can negotiate with our company to determine the appropriate location.

The VZD 12kV three-position vacuum circuit breaker integrates isolation, grounding, and interrupting functions, utilizes vacuum arc extinguishing technology, and features a compact design and easy operation. It supports both electric and manual control, features mechanical interlock protection, and is suitable for fixed or removable installation. Its high interrupting capacity, long life, and maintenance-free design make it suitable for substations, industrial and mining applications, and smart grids, enhancing power distribution reliability.

Product Technical Features
1. Compact/Flexible:
The air-based insulation method meets the electrical clearance and partial discharge standards of the power industry's technical specifications.
The compact cabinet dimensions (standard cabinet dimensions: 480*1000*1800mm (width x depth x height)) make the complete power distribution system extremely compact, saving space on expensive urban construction land.
Flexible busbar configurations and expansion options facilitate integration with other cabinet types.
2. Integrated/Encapsulated:
The integrated circuit breaker combination design integrates a disconnector, circuit breaker, earthing switch, and live sensor. The modular design provides simple, reliable interlocking and easy maintenance.
3. Visualization/High Efficiency:
The visual disconnector breakout design, rapid delivery, and overall modular design make assembly of the complete electrical system quick and easy.
The integrated structure allows all types of closing requirements to be implemented within a single unit, reducing the risk of locking failures caused by assembly process issues in the complete electrical system. 4. Stability/Durability:
Optional spring permanent magnet mechanism provides long mechanical life. The sealed vacuum interrupter provides dustproof and high insulation performance.

Product Technical Parameters
Rated voltage: 12kV
1-minute power frequency withstand voltage: 42kV
Lightning impulse withstand voltage: 75/85kV
Rated current: 630- 1250A (feeder)
Rated frequency: 50/60Hz
Rated short-circuit breaking current: 25kA/31.5kA
Rated short-time withstand current: 25kA/31.5kA
Rated peak withstand current: 50kA/63kA
Rated short-circuit current breaking cycles: 30
Mechanical life: 10,000 cycles (circuit breaker)
Power frequency withstand voltage for auxiliary circuits: 2000V
630-1250A (incoming line)
3,000 cycles (disconnector/earthing switch)
100,000 cycles (circuit breaker)

Applicable fixed switchgear structure:
The cabinet is constructed of 2.0mm aluminum-zinc coated steel sheets bent and assembled for high strength, light weight, and excellent corrosion resistance. It is divided into independent low-voltage compartments, busbar compartments, switch compartments, and cable compartments.

The FN7-12 indoor high-voltage load switch and fuse combination is a gas-generating indoor high-voltage load switch suitable for three-phase AC power systems with a 50 Hz frequency and a rated voltage of 12 kV. It is used for interrupting load current and closing short-circuit currents.

Normal Operating Conditions:
Ambient Air Temperature: Upper Limit: +40°C; Lower Limit: -10°C in general areas, -25°C in cold regions;
Altitude: 1000 m or less above sea level.
Relative Humidity: Daily average not exceeding 95%, monthly average not exceeding 90%;
Ambient air must be free from significant contamination by corrosive or combustible gases, water vapor, or other pollutants;
No frequent severe vibration.

The ZW32 12KV Manual and Electric Outdoor High Voltage Vacuum Circuit Breaker, is a robust and reliable switchgear device designed for use in 10kV outdoor distribution networks. It integrates both manual and electric operation modes, offering flexibility for local and remote control applications. The product features a three-phase design with color-coded operating levers for safe and intuitive identification, making maintenance and operation easier.

Its core vacuum interrupter technology ensures excellent arc extinguishing performance, high breaking capacity, and minimal maintenance needs. The insulating bushings are designed to withstand harsh outdoor environments such as rain, humidity, dust, and UV exposure, ensuring long-term stable operation.

This circuit breaker is widely used in urban and rural power grids, industrial and mining enterprises, and substations. It is particularly suitable for frequent operation scenarios and plays a critical role in system protection, load switching, fault isolation, and automatic reclosing. Its ability to be integrated with intelligent terminals allows for remote monitoring and control, making it an ideal solution for modern smart grid infrastructure. The ZW32 12KV unit enhances both operational safety and grid reliability, supporting efficient and secure power distribution.

12kV outdoor high-voltage disconnectors and vacuum circuit breakers are widely used in medium-voltage power distribution systems, primarily providing control, isolation, and protection. They are particularly suitable for substations, industrial and mining enterprises, and rural power grid upgrades.

Product Advantages:
High insulation performance: Utilizes high-voltage composite or ceramic insulators, suitable for harsh outdoor environments.
Safety isolation: Features a clearly visible disconnection to ensure safe maintenance.
Modular structure: Easy installation and easy integration with vacuum circuit breakers, lightning arresters, and other devices.
Multiple operation modes: Supports manual, electric, and remote control to meet the needs of smart grid access.
Low maintenance: Vacuum arc extinguishing design ensures long mechanical life and is suitable for frequent operation.

Typical Applications:
Rural distribution line segmentation; Industrial user line isolation; Boundary switches in urban distribution automation systems; Small substation inlet and outlet protection equipment.

Our ZW32 series 12kV outdoor high-voltage disconnectors and vacuum circuit breakers combine high-reliability operation with safe isolation, making them essential equipment for modern power distribution systems, helping to achieve efficient, safe, and intelligent power grid operation.

The PT/GL/JL 12kV High-Voltage Isolation and Metering Cart is a device designed specifically for power systems, primarily used for isolating and metering high-voltage circuits. Its compact design makes it easy to install and maintain. Constructed of high-strength materials, it ensures safety and durability in high-voltage environments. Its main components include an isolating switch, a metering device, and a trolley mechanism.

The isolating switch disconnects the circuit when necessary, ensuring the safety of maintenance personnel; the metering device accurately measures current and voltage, helping to monitor the operating status of the power system. The trolley mechanism allows the device to be easily withdrawn or pushed into the switchgear for easy operation and maintenance.

The overall design complies with relevant safety standards and is suitable for a variety of industrial and commercial power systems. Its reliability and efficiency make it an indispensable component of power systems.

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