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Hyundai Air Circuit Breaker (ACB) Hyundai Air Circuit Breaker (ACB) is one of the products of Hyundai Electric, a company engaged in the production and supply of electrical equipment. This ACB, utilizing advanced technology and international standards, is used for protection and control of electrical systems.

The Hyundai Electric ACB has many features that make it a suitable choice for establishing protection and control in electrical systems. Some features of the Hyundai Electric ACB include:

  1. Rapid On/Off Capability: This air circuit breaker has the ability to quickly interrupt and connect current flow, which is very useful for protecting vital electrical systems in urgent situations.
  2. Current Adjustment Capability: The Hyundai Electric ACB, with its adjustable maximum acceptable current feature, allows for precise adjustment of input electrical current to the system.
  3. Protection of Electrical Devices: This ACB acts as a multifunctional circuit breaker and can protect electrical devices against electrical hazards.
  4. Robust Structure: The Hyundai Electric ACB, using high-quality materials and advanced technology, has a robust structure that can withstand harsh conditions and external damage.

Types of Hyundai ACB Hyundai

Hyundai ACB Hyundai, as one of the industrial giants of South Korea, is actively involved in the production of electrical equipment. Hyundai air circuit breakers, as one of the flagship products of this brand, are used in a wide range of applications due to their unparalleled variety and high quality.

Here is an introduction to the types of Hyundai air circuit breakers, based on series and current range, along with information about their features and applications.

Hyundai HG Series Air Circuit Breaker


The Hyundai HG Series air circuit breaker is a low-voltage circuit breaker designed to protect electrical circuits against overloads, short circuits, and ground faults. It is a circuit disconnecting device that can also be used for manual circuit interruption.

The Hyundai HG Series air circuit breaker is available in various sizes and current ratings to meet a wide range of applications. These breakers are suitable for use in commercial and industrial power distribution systems.

Some features of the Hyundai HG Series air circuit breaker include:

  • Reliable and durable performance
  • High breaking capacity
  • Precise protection
  • Easy installation and setup
  • Wide range of accessories

Here are the technical specifications of the Hyundai HG Series air circuit breaker:

  • Rated Voltage: 600 volts AC
  • Rated Current: Up to 4000 amps
  • Breaking Capacity: Up to 100 kiloamps
  • Trip Settings: Overload, short circuit, ground fault
  • Operation Type: Fixed frame, withdrawable
  • Dimensions: 175 mm (width) x 225 mm (height) x 125 mm (depth)
  • Weight: 5 kilograms

The Hyundai HG Series air circuit breaker is used in a variety of applications, including:

  • Commercial and industrial buildings
  • Electrical installations and equipment
  • Power distribution systems
  • Motors and generators
  • Lighting systems
  • HVAC systems

The Hyundai HG Series air circuit breaker is a cost-effective and reliable choice for protecting electrical circuits. These breakers have voltage and current ratings that can meet a wide range of applications and provide multiple safety features for personnel and equipment protection.

Hyundai U Series Air Circuit Breaker

The Hyundai U Series air circuit breaker is an ACB with a current range of 630 to 6300 amps. These breakers are designed and manufactured in 4 frames A, B, C, D, with high short-circuit breaking capacity (up to 150 kiloamps) for various general and generator applications.

The Hyundai U Series air circuit breaker features:

Compact Dimensions: These breakers occupy minimal space, making them ideal for use in compact electrical panels. Wide Current Range: These breakers can be used to protect a wide range of electrical equipment including motors, transformers, and generators. High Short-Circuit Breaking Capacity: These breakers can interrupt high-current short circuits without damaging themselves or the electrical equipment they protect. High Reliability: These breakers are constructed with high-quality materials and tested according to international standards. Easy Operation: These breakers are designed for easy operation and feature a wide range of functions to simplify installation and maintenance.

The Hyundai U Series air circuit breaker is suitable for various industrial applications including:

Buildings: Complexes, hospitals, commercial centers, and hotels Data Centers: Broadcasting stations, IT communications Industrial Automation: Steel industries, oil and gas industries, water and wastewater industries Electrical Installations: Power plants, substations, generators, renewable energy installations If you are looking for a compact, reliable, and easy-to-use air circuit breaker, the Hyundai U Series is an excellent choice.

Hyundai HAT Series Air Circuit Breaker

The Hyundai HAT Series air circuit breaker is a compact outdoor air circuit breaker with excellent performance and high reliability. It is designed to protect electrical circuits against overloads, short circuits, and ground faults. This breaker is used in a wide range of applications including industrial, commercial, and residential settings.

The Hyundai HAT Series air circuit breaker features:

Compact design for space-saving High performance and reliability Protection against overloads, short circuits, and ground faults Wide range of applications The specifications of the Hyundai HAT Series air circuit breaker are as follows:

Rated Voltage: 690 volts Rated Current: 630 to 3200 amps Breaking Capacity: 65 to 150 kiloamps Protection Degree: IP65 The Hyundai HAT Series air circuit breaker is an excellent choice for protecting electrical circuits. In a wide range of applications, this breaker offers compact, reliable performance and high reliability.

What is an Air Circuit Breaker (ACB)?

An Air Circuit Breaker (ACB) is a power breaker used to protect high-voltage electrical systems with strong currents. This air circuit breaker is used to prevent electrical hazards such as short circuits, overloads, electric pressure attacks, and some other dangers. One of the important features of the ACB is its automatic current interruption and connection capability, which acts as dual protection. In other words, when the current exceeds the specified limit, the ACB automatically disconnects to prevent hazards from high currents. Additionally, the ACB has the ability to control and monitor current and voltage.

Among other features of the ACB is its capability for quick disconnection and reconnection of current. This important feature is very useful in emergencies and for protecting vital electrical systems. Furthermore, the ACB, with its adjustable maximum allowable current feature, enables precise adjustment of the input electrical current to the system. This capability allows the user to adjust and control the desired current based on specific system requirements. The ACB also acts as a multifunctional circuit breaker and can perform various functions including protection of electrical devices, load disconnection, and protection of the power grid. It has the ability to quickly disconnect current so that in case of electrical hazards such as short circuits or overloads, it immediately cuts off the electrical current to prevent further damage. Additionally, with the capability to adjust the maximum allowable current, the user can adjust the required current based on specific system requirements. This feature serves as a powerful tool in managing and controlling the input electrical current to the system and is very useful for protecting vital electrical systems.

Application of Air Circuit Breakers (ACBs)

The Air Circuit Breaker (ACB) finds extensive applications in electrical industries and power systems with high voltage and strong currents. Below are some of its main applications:

  1. Protection of Electrical Systems: The ACB is used to protect electrical systems against electrical hazards such as short circuits, overloads, electric pressure attacks, and sudden increases in current. With quick disconnection and reconnection of current, this breaker is capable of immediately cutting off electrical current to protect the system from electrical hazards.
  2. Current Management: The automatic air circuit breaker (ACB) with the ability to adjust the maximum allowable current enables precise adjustment of the input current to the system. This feature allows the user to adjust and control the desired current based on specific system requirements. This capability is very useful in cases where precise management and control of input electrical current to the system are required.
  3. Load Disconnection: The ACB also has the capability of load disconnection. By disconnecting electrical current, this breaker can cut off electrical loads and prevent risks associated with overload and system imbalances.
  4. Protection of Electrical Devices: As a multifunctional circuit breaker, the ACB has the capability to protect electrical devices. By cutting off electrical current in the event of electrical hazards such as short circuits or overloads, the ACB rapidly and automatically disconnects the current, protecting electrical devices from damage caused by these hazards. This protective feature is crucial for preventing malfunction and damage to vital electrical devices and sensitive applications that require maintaining proper and stable operation.

Structure and Components of Air Circuit Breakers (ACBs)

The Air Circuit Breaker (ACB) consists of several components, each playing an important role in the functioning of the breaker. Below are some of the components and the main structure of the ACB:

  1. Frame: The ACB frame provides the portability and installation capability and houses other components within itself. This frame is usually made of steel or fomant (utilizing ashes from various stones) and provides the necessary strength and rigidity for the breaker.
  2. Trip Unit: This component acts as the control system of the ACB and provides the capability to disconnect and reconnect the current. The trip unit can operate using various mechanisms such as pressure, heat, or electromagnetic.
  3. Locking Mechanism: The locking mechanism is responsible for locking the ACB in the on or off position to prevent unauthorized changes in its operation. This mechanism usually includes physical or electronic locks.
  4. Controller: The ACB controller is responsible for controlling and managing the operation of the breaker. These components typically include electronic systems and microprocessors capable of measuring and controlling current and voltage.
  5. Breaking Device: The breaking device in the ACB is responsible for interrupting the electrical current. This breaking device usually includes a powerful breaking system that, using various mechanisms such as arc, pressure breaker, or magnetic breaker, reliably and rapidly interrupts the electrical current. This breaking function is crucial for protecting electrical systems against hazards such as short circuits or overloads. By interrupting the electrical current, the breaker prevents minimal damage to the relevant electrical equipment and devices.

Difference Between Air Circuit Breakers and Compact Circuit Breakers

Air Circuit Breakers (ACBs) and Molded Case Circuit Breakers (MCCBs) are both used for protecting electrical systems, but they have significant differences. Below are some of the differences between ACBs and MCCBs:

  1. Current Breaking Capacity: ACBs are generally used for larger electrical systems with higher currents. Their current breaking capacity typically ranges from 800 amps to 6300 amps. On the other hand, MCCBs are usually used in smaller systems with lower currents, and their current breaking capacity typically ranges up to about 2500 amps.
  2. Dimensions and Installation Space: Due to their higher capacity and use in larger systems, ACBs have larger dimensions compared to MCCBs. ACBs are designed for installation in larger electrical panels and racks. Conversely, MCCBs are designed to be smaller and require less space, making them suitable for installation in smaller systems with limited space.
  3. Quick Disconnect and Reconnect Capability: ACBs have the capability of quick disconnect and reconnect due to their specific structure and features. This feature is highly beneficial for protection in emergency situations and for vital electrical systems. Similarly, MCCBs also have the capability of quick disconnect and reconnect and act as automatic disconnectors. However, due to their smaller structure and lower capacity, they are typically used for smaller systems and fewer applications. Additionally, the ability to adjust the current in MCCBs for more precise control of the input current to the electrical system is very useful.

Introduction to Hyundai Electric

Hyundai Electric is a large and reputable company in the field of industrial electrical equipment and switchgear manufacturing. It is part of the Hyundai Group, which is a leading company in the automotive industry and related industries.

With a focus on quality, innovation, and technology, Hyundai Electric offers products with high standards and reliable performance. The company is extensively involved in the production of industrial electrical equipment, including transformers, Air Circuit Breakers (ACBs), Molded Case Circuit Breakers (MCCBs), contactors, relays, electrical panels, protective devices, and other industrial electrical equipment.

Hyundai Electric products are manufactured using advanced technologies and comply with international standards. These products are used as part of electrical systems in various industries such as manufacturing, energy, oil and gas, transportation, construction, and other industrial sectors.

With a focus on quality and after-sales service, Hyundai Electric provides its customers with safe and reliable industrial electrical solutions. Additionally, the company has an extensive sales and service network operating worldwide, providing customers with technical support and specialized product sales services. Electroshahli Company, as the main supplier of industrial electrical equipment and switchgear, is one of the largest importers and suppliers of Hyundai industrial electrical products.

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