OEM Insulated Case Circuit Breaker

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  • CHM3L Series Intelligent Reclosing Leakage Circuit Breaker Quick View
    CHM3L Series Intelligent Reclosing Leakage Circuit Breaker
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    CHM3L Series Intelligent Reclosing Leakage Circuit Breaker

    CHM3L Series Intelligent Reclosing Leakage Circuit Breaker

    The CHM3L series intelligent reclosing leakage circuit breaker is a modern electrical protection device designed to enhance the safety and reliability of power systems. Its rugged plastic housing ensures durability in various environments.

    A clear digital display on the front allows users to monitor current, voltage, and other parameters in real time. Below, multiple function buttons, including red and green indicator lights, display the device's operating status and fault information, respectively.

    The circuit breaker also offers multiple protection functions, including overload protection, short-circuit protection, and leakage protection, effectively preventing electrical accidents. Its modular design makes it easy to install and maintain, making it suitable for a wide range of residential, commercial, and industrial applications, providing comprehensive safety protection for power systems.

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  • CHM1EL Series Intelligent Leakage Circuit Breaker For Power Distribution Equipment Quick View
    CHM1EL Series Intelligent Leakage Circuit Breaker For Power Distribution Equipment
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    CHM1EL Series Intelligent Leakage Circuit Breaker For Power Distribution Equipment

    CHM1EL Series Intelligent Leakage Circuit Breaker For Power Distribution Equipment

    The CHM1EL series intelligent residual current circuit breaker is a key electrical protection device in power distribution equipment. It provides leakage, overload, and short-circuit protection, automatically shutting off power to ensure safety. It features intelligent monitoring, providing real-time circuit status information and visually displaying it on a digital display. Suitable for a variety of applications, including residential, commercial, and industrial, it ensures the reliability and safety of power systems.

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

    Ambient Temperature
    ·The series can operate continuously within normal ambient and operating temperatures of -5°C to 40°C.
    ·For operating temperatures exceeding 40°C (over 60°C for motor protection), derating should be applied or contact us.
    ·Storage temperature range: -20°C to 70°C.

    Altitude
    ·The normal operating installation altitude must not exceed 2000m. If installation is required at altitudes exceeding 2000m, changes in dielectric strength and air temperature drop must be considered. Refer to the altitude derating factor table for details.

    Protection Level
    Circuit breaker body: IP20
    Circuit breaker installed in switchgear:
    Circuit breaker with toggle handle: IP40
    Circuit breaker with electric operating mechanism: IP40

    Pollution Degree
    This product operates in pollution degree 3 environments (industrial environments) as defined by IEC 60947-1 and 60664-1.

    Humidity
    Normal operation requires:
    At an ambient air temperature of +40°C, the relative humidity must not exceed 50%. Higher relative humidity conditions are acceptable at lower temperatures.
    The average relative humidity in the wettest month is 90%.
    Condensation on the product surface must be considered to affect product performance.

    Reliable contact indication with isolation function
    · All molded case circuit breakers in this series comply with the isolation requirements defined in IEC standard 60947-2.
    · The isolation position corresponds to the O (OFF) position.
    · The operating handle indicates the "OFF" position only when the contacts are actually open.
    · Rotating the handle or electric operating mechanism does not alter the reliability of the contact indication system. After testing, the isolation function must ensure:
    · Mechanical reliability of the contact indication system
    · No leakage current
    · A certain overvoltage withstand capability between the input and output terminals.

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  • CHM1HU Series 800V-1140V Photovoltaic High Voltage Plastic Case Circuit Breaker Quick View
    CHM1HU Series 800V-1140V Photovoltaic High Voltage Plastic Case Circuit Breaker
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    CHM1HU Series 800V-1140V Photovoltaic High Voltage Plastic Case Circuit Breaker

    CHM1HU Series 800V-1140V Photovoltaic High Voltage Plastic Case Circuit Breaker

    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 well-suited 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 break, ensuring 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.

    Combining high-reliability operation with safe isolation, this series of 12kV outdoor high-voltage disconnectors and vacuum circuit breakers is an indispensable component of modern power distribution systems, contributing to efficient, safe, and intelligent power grid operation.

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  • CHM1E Series Metering Electronic Molded Case Circuit Breakers Quick View
    CHM1E Series Metering Electronic Molded Case Circuit Breakers
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    CHM1E Series Metering Electronic Molded Case Circuit Breakers

    CHM1E Series Metering Electronic Molded Case Circuit Breakers

    This product is an electrical device, specifically a circuit breaker with a digital display. It features a modular design with multiple connection ports, suitable for a variety of circuit connection needs. A prominent operating handle on the front facilitates manual operation and maintenance.

    Functionally, this circuit breaker may include overload and short-circuit protection, automatically disconnecting the circuit when an abnormality occurs to protect the circuit and equipment. The digital display may display current operating status, voltage, current, and other parameters, providing real-time monitoring information.

    In addition, the device is designed with safety and reliability in mind, with an insulating casing to prevent the risk of electric shock. A green indicator light on the bottom indicates normal operation, while a red indicator light indicates a fault or requires maintenance.

    This circuit breaker is suitable for power systems in industrial and commercial environments, providing effective circuit protection and management to ensure stable operation.

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  • CHM1 Impact-Resistant Plastic Case Circuit Breaker Accessories Quick View
    CHM1 Impact-Resistant Plastic Case Circuit Breaker Accessories
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    CHM1 Impact-Resistant Plastic Case Circuit Breaker Accessories

    CHM1 Impact-Resistant Plastic Case Circuit Breaker Accessories

    The CHM1 impact-resistant molded case circuit breaker accessories include two types of components:

    1. Shunt Trip (63FT):
    - This component is used to remotely disconnect the circuit breaker when needed, typically for emergency power off or remote control.
    - Designed with an impact-resistant plastic housing, it ensures durability and safety in various environments.
    - Suitable for CM1 and TM30 (NF30) series circuit breakers.

    2. Auxiliary Contact (400(H)FC):
    - This component provides additional contact connections, typically for signaling or control circuits.
    - Also featuring an impact-resistant plastic housing, it enhances product durability and reliability.
    - Suitable for CM1 and TM30 (NF30) series circuit breakers.

    Both accessories are designed to enhance the functionality and flexibility of circuit breakers and are suitable for a variety of industrial and commercial applications.

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  • CHM1LE/CHM1E Electronic Plastic Case Leakage Circuit Breaker Accessories Quick View
    CHM1LE/CHM1E Electronic Plastic Case Leakage Circuit Breaker Accessories
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    CHM1LE/CHM1E Electronic Plastic Case Leakage Circuit Breaker Accessories

    CHM1LE/CHM1E Electronic Plastic Case Leakage Circuit Breaker Accessories

    The CHM1LE/CHM1E electronic molded case circuit breaker accessories include several different types of solenoid valves. Each product has its own specific function and application:

    1. CML Series: This solenoid valve series is suitable for dispensing and mixing applications. It features a 1/8-inch NPT port for precise fluid control.

    2. CDM Series: This series features electric actuators, suitable for applications requiring electric control, enabling remote operation and automated control.

    3. CD Series: This series features electric actuators, designed for a wider range of applications, providing a reliable electric control solution.

    4. LCD Series: This series features electric actuators, which may feature a liquid crystal display (LCD) for a more intuitive operator interface and status monitoring.

    These products are suitable for industrial automation, fluid control, and other fields, meeting diverse control needs.

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  • DZ20 Series High Flame Retardant Protective Plastic Case Circuit Breaker Quick View
    DZ20 Series High Flame Retardant Protective Plastic Case Circuit Breaker
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    DZ20 Series High Flame Retardant Protective Plastic Case Circuit Breaker

    DZ20 Series High Flame Retardant Protective Plastic Case Circuit Breaker

    The DZ20 series molded case circuit breaker is an electrical protection device primarily used for overload and short-circuit protection. The following is an overview of this product:

    Material Characteristics:
    - The housing is constructed of impact-resistant, highly flame-retardant materials, ensuring structural stability and safety in all environments.
    - This material not only resists physical impact but also slows the spread of fire in the event of a fire, enhancing the device's protective performance.

    Functional Features:
    - Equipped with overload and short-circuit protection, it quickly cuts off power in the event of an overload or short circuit, protecting circuits and equipment from damage.
    - A manual operating mechanism allows users to manually control the circuit breaker's opening and closing positions when needed.

    Mounting Options:
    - Compatible with a variety of mounting options, including fixed and DIN-rail mounting, allowing users to choose the appropriate mounting method based on their needs.
    - This flexibility makes the DZ20 series circuit breakers suitable for a wide range of electrical control systems and power distribution systems.

    Applications:
    - Widely used in power distribution systems in industrial, commercial, and residential buildings, protecting electrical equipment such as motors and transformers.
    - Also suitable for applications requiring frequent operation and maintenance, such as factory production lines and commercial complexes.

    Safety:
    - Designed to comply with relevant electrical safety standards, ensuring reliable protection under various operating conditions.
    - Rigorous quality control and testing ensure product durability and reliability.

    The DZ20 series molded case circuit breakers, with their excellent protection performance, flexible installation options, and reliable protection functions, have become essential equipment in the electrical protection field.

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  • DZ20LE Series Safe And Compact Plastic Case Leakage Circuit Breaker Quick View
    DZ20LE Series Safe And Compact Plastic Case Leakage Circuit Breaker
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    DZ20LE Series Safe And Compact Plastic Case Leakage Circuit Breaker

    DZ20LE Series Safe And Compact Plastic Case Leakage Circuit Breaker

    The DZ20LE series safe and compact molded case leakage circuit breaker features a transparent housing for compact yet powerful electrical control boxes. Features include:

    1. Transparent housing: Allows easy observation of internal components for maintenance and troubleshooting.

    2. Modular design: Optimized internal component layout facilitates installation and replacement.

    3. High protection rating: The housing protects against dust and water intrusion, making it suitable for use in harsh environments.

    4. Versatility: Suitable for a variety of electrical control applications, such as industrial automation and power distribution.

    5. Safety: Internal components comply with safety standards, ensuring operator safety.

    It has a wide range of applications, including but not limited to manufacturing, construction, and energy management, meeting the electrical control needs of diverse industries.

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  • DZ47 Series High Breaking Small Leakage Circuit Breaker Quick View
    DZ47 Series High Breaking Small Leakage Circuit Breaker
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    DZ47 Series High Breaking Small Leakage Circuit Breaker

    DZ47 Series High Breaking Small Leakage Circuit Breaker

    The DZ47-63 series miniature circuit breakers feature a comprehensive structure, reliable performance, high breaking capacity, and an attractive and compact appearance. The housing and main components are constructed of impact-resistant, highly flame-retardant materials.

    Applications and Features
    The DZ47-63 standard miniature circuit breaker is suitable for controlling and isolating low-voltage terminal power distribution in residential, industrial, and construction applications, providing overload and short-circuit protection for low-voltage terminal distribution lines and electrical equipment. It can also be used for infrequent switching operations.

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  • DZ47Z Series DC High Breaking Small Leakage Circuit Breaker Quick View
    DZ47Z Series DC High Breaking Small Leakage Circuit Breaker
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    DZ47Z Series DC High Breaking Small Leakage Circuit Breaker

    DZ47Z Series DC High Breaking Small Leakage Circuit Breaker

    Product Description:
    The DZ47Z series DC miniature circuit breakers are designed specifically for DC circuits. They feature a comprehensive structure, reliable performance, high breaking capacity, and an attractive and compact appearance. The housing and main components are constructed of impact-resistant, highly flame-retardant materials.

    Applications and Features:
    The DZ47Z series DC miniature circuit breakers are suitable for controlling and isolating DC terminal distribution circuits in solar photovoltaic systems, energy storage systems, communication base stations, DC microgrids, rail transit, and electric vehicle charging facilities. They also provide overload and short-circuit protection for DC terminal distribution lines and electrical equipment. They can also be used for infrequent switching operations.

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  • CHB1YF Series Photovoltaic Small Reclosing Circuit Breaker Quick View
    CHB1YF Series Photovoltaic Small Reclosing Circuit Breaker
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    CHB1YF Series Photovoltaic Small Reclosing Circuit Breaker

    CHB1YF Series Photovoltaic Small Reclosing Circuit Breaker

    The CHB1YF series photovoltaic miniature reclosing circuit breaker is a protective device designed specifically for photovoltaic power generation systems. It offers high reliability and stability, effectively protecting photovoltaic panels and the system.

    Utilizing advanced reclosing technology, this circuit breaker rapidly disconnects power when a short circuit or overload is detected and automatically restores power after the fault is resolved, minimizing system downtime.

    Its compact design makes it easy to install in various photovoltaic systems, and it offers both manual and automatic operation modes, allowing users to choose according to their needs.

    The CHB1YF series circuit breaker also features excellent weather resistance and anti-interference capabilities, making it suitable for a variety of harsh environmental conditions. It is an indispensable safety device for photovoltaic power generation systems.

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  • DZ30-32/DZ30LE-32 (DPN) Series Small Leakage Circuit Breakers Provide Personal Protection Quick View
    DZ30-32/DZ30LE-32 (DPN) Series Small Leakage Circuit Breakers Provide Personal Protection
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    DZ30-32/DZ30LE-32 (DPN) Series Small Leakage Circuit Breakers Provide Personal Protection

    DZ30-32/DZ30LE-32 (DPN) Series Small Leakage Circuit Breakers Provide Personal Protection

    The DZ30-32/DZ30LE-32 (DPN) series of small leakage circuit breakers provide effective personal safety protection for low-voltage terminal power distribution in residential, industrial, construction and other fields through leakage protection function.

    Applications and Features: Suitable for low-voltage terminal distribution in residential, industrial, and construction applications, it provides overload, short-circuit, isolation, and leakage protection. It can simultaneously disconnect both the phase and neutral wires, protecting electrical equipment from insulation failures and providing personal protection against indirect contact and supplementary protection against direct contact.

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Chengxi Electric Group Co., Ltd.

Chengxi Electric Group Co., Ltd.

Chengxi Electric Group Co., Ltd. is a Intelligent Universal Circuit Breaker Manufacturer and OEM Insulated Case Circuit Breaker Supplier . Equipped with modern industrial factory buildings and office facilities, we specialize in the production and operation of circuit breakers, dual power supplies (ATS), AC contactors, and other modern low-voltage electrical products. The company implements a complete and scientific quality management system. Through good faith and strong technical capabilities, our products have earned widespread recognition in the industry. ChengXi Electric adheres to a management philosophy of "Integrity, Pragmatism, Science, Rigor, and Solidarity," always focusing on customer needs and dedicated to the field of low-voltage electrical equipment. Relying on the power system and driven by market demands, ChengXi Electric has provided high-quality products and services to a diverse range of users over the years. We continue to expand our market presence, and our products are widely used in numerous domestic sectors, including electric power systems, nuclear power, national defense, petrochemicals, metallurgy, coal, railways, and more. They play a vital role in many national key projects, winning the trust of a growing number of customers and achieving an excellent reputation within the industry.

Certificate

  • Group standard drafting unit
    Group standard drafting unit
  • AAA-rated credit enterprise
    AAA-rated credit enterprise
  • Wenzhou Enterprise Technology Research and Development Center
    Wenzhou Enterprise Technology Research and Development Center
  • Star Enterprise
    Star Enterprise
  • High-tech enterprises
    High-tech enterprises

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Industry Knowledge Extension

What Circuit Problems Can the Intelligent Universal Circuit Breaker Solve?

Addressing Overload and Short-Circuit Conditions

By continuously monitoring current flow, it detects when electrical demand exceeds safe limits. Instead of relying solely on thermal or magnetic triggers, the intelligent breaker uses microprocessor-based algorithms to analyze data and respond more accurately. In addition, it protects against short circuits—sudden high-current faults that can damage equipment or cause fires. The intelligent system reacts quickly, downtime and preventing damage to wiring and connected devices.

Managing Power Quality and System Communication

Voltage fluctuations, harmonics, and imbalance between phases can reduced equipment lifespan. The intelligent circuit breaker monitors these parameters and communicates data to control systems for corrective actions. Its communication interface—often integrated with smart building systems—enables remote monitoring and diagnostics. This allows maintenance personnel to identify and address potential problems before they escalate. Overall, the IUCB enhances energy management, safety, and operational reliability, making it a vital component in modern electrical infrastructures.

What Is the Main Function of an Insulated Case Circuit Breaker?

Designed for High-Capacity Electrical Protection

An Insulated Case Circuit Breaker (ICCB) serves as a protective device for medium and large-scale electrical installations. Its main function is to safeguard electrical circuits from overloads, short circuits, and equipment failures. Unlike smaller molded case breakers, the ICCB is built to handle higher current ratings, typically ranging from 400A to several thousand amperes. The “insulated case” design refers to the structure that separates live components, providing extra protection and ensuring reliable operation even in harsh environments.

Comprehensive Overcurrent and Fault Interruption

The ICCB operates by automatically disconnecting the circuit when abnormal conditions occur. It employs both thermal and magnetic trip elements to detect different fault types. For instance, a sustained overload causes heat buildup, which triggers the thermal element, while an instantaneous short circuit activates the magnetic release. These combined mechanisms protect electrical distribution systems from damage, preventing hazards such as insulation failure, equipment burnout, or electrical fires.

Flexibility and Integration with Modern Systems

A key advantage of insulated case breakers is their customization and modular design. Many models come with adjustable trip settings and digital protection relays, allowing engineers to tailor performance to specific applications. They can also integrate with building automation systems, providing feedback on power consumption and breaker status. This intelligent coordination reduces unnecessary tripping and enhances continuity of service. Ultimately, the main function of an insulated case circuit breaker is not just protection—it also contributes to improved energy efficiency and system reliability across industrial and commercial facilities.

What Are the Common Types of Safety Circuit Breakers?

Protecting Homes and Businesses from Electrical Risks

Safety circuit breakers are essential devices used to prevent electrical accidents and equipment damage. Their role is to interrupt current flow when faults occur, thereby safeguarding people and property. There are several common types, each designed to handle specific protection needs and electrical environments.

Miniature Circuit Breaker (MCB)

The Miniature Circuit Breaker is one of the widely used safety breakers. It is designed for low-voltage applications, typically found in residential and small commercial systems. The MCB protects against overloads and short circuits, automatically cutting off the current when safe limits are exceeded. It is compact, reliable, and easy to reset, making it an ideal replacement for traditional fuses.

Residual Current Circuit Breaker (RCCB)

Another important type is the Residual Current Circuit Breaker, which focuses on protecting people from electric shock. It detects differences between live and neutral current flow, indicating leakage through unintended paths, such as a person’s body or faulty insulation. When such a fault is detected, the RCCB disconnects the power almost instantly, injury risks and preventing electrical fires caused by leakage currents.

Molded Case Circuit Breaker (MCCB)

For larger electrical systems, the Molded Case Circuit Breaker provides higher current ratings and adjustable protection settings. It combines overload, short-circuit, and earth fault protection in a single device. MCCBs are used in commercial and industrial installations where more precise control and durability are required.

Air and Earth Leakage Circuit Breakers

In addition to MCBs and RCCBs, Air Circuit Breakers (ACBs) are used for high-capacity protection in power distribution systems, while Earth Leakage Circuit Breakers (ELCBs) detect and interrupt current leakage to the ground. Both types enhance safety in complex electrical environments.

Ensuring a Safe Electrical Network

Selecting the right safety circuit breaker depends on the voltage level, load capacity, and safety requirements of a system. Whether in homes, offices, or factories, these breakers play a vital role in ensuring uninterrupted, hazard-free electrical operation.