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OEM Insulated Case Circuit Breaker

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Intelligent Universal Circuit Breaker Manufacturer

  • Molded Case External Circuit Breaker for Medium And Large Power Distribution Quick View
    Molded Case External Circuit Breaker for Medium And Large Power Distribution
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    Molded Case External Circuit Breaker for Medium And Large Power Distribution

    Molded Case External Circuit Breaker for Medium And Large Power Distribution

    I.Core Performance and Advantages

    This series of molded-case circuit breakers have strong breaking capacity and precise classification. They can quickly cut off the current in case of short-circuit faults, strengthening the safety defense line for the power distribution system. They also have precise overload protection. Different models can be adapted to different current requirements, and are equipped with corresponding tripping characteristics to monitor the circuit load in real time, ensuring the stable operation of electrical equipment. In terms of environmental adaptability, it supports multiple voltage levels, has a high rated insulation voltage and impulse withstand voltage, and can work stably in a wide temperature range, suitable for various complex working conditions.

    II.Key Selling Points

    In terms of brand, CNXE is a well-known brand in the electrical field. Its products strictly follow national standards and have passed 3C certification. They are of reliable quality and have a complete after-sales system. Operationally, it is equipped with a prominent operation handle, making the open and close states clear at a glance; the modular design makes installation and maintenance more efficient. In addition, the large current models have made special optimizations in the arc extinguishing system and contact material, resulting in faster arc extinguishing speed, longer contact lifespan, and comprehensive upgrades in breaking and current-carrying capacity. They are the preferred choice for medium and large-scale power distribution projects.

    III.Typical Application Scenarios

    In industrial scenarios, small current models can be used for small motors, machine tools, and workshop assembly line power distribution branch circuits; large current models are suitable for large production lines' main power distribution, substation's low-voltage side outgoing circuits, and high-power equipment control and protection circuits. In commercial buildings, small current models play a protective role in supermarket, office building lighting, and air conditioning branch circuits, while large current models ensure the power safety of large equipment in shopping malls and key departments in hospitals. In the civilian sector, small current models are suitable for large commercial spaces, villa main power distribution or important power distribution circuits; in the energy and infrastructure sector, large current models can be used for power distribution equipment for new energy and urban rail transit auxiliary power distribution circuits, providing reliable power support for related projects.

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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.

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  • 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.