Circuit breakers are important switching and protection devices in electrical systems. Depending on the product line and protection functions, these devices help disconnect the power supply in the event of overloads, short circuits, leakage currents, or other abnormal faults.
Selecting a circuit breaker with the correct rated current, number of poles, breaking capacity, and protection functions contributes to improving safety, protecting conductors and machinery, and maintaining stable operation of the entire electrical system.
HOANG NHAT Trading and Electrical Construction Joint Stock Company specializes in distributing and supplying LS ELECTRIC circuit breakers, switching devices, and electrical equipment to customers in Hanoi, Hai Phong and the northern provinces.
HOANG NHAT supplies products for a wide range of applications, from residential electrical systems, shops, and offices to buildings, factories, industrial electrical panels, construction projects, and electrical projects.
Introduction to the LS ELECTRIC Brand
LS ELECTRIC is an electrical equipment and automation brand originating from South Korea. The company develops a wide range of products for power distribution, control, and industrial automation systems.
In the field of low-voltage switching devices, LS ELECTRIC provides a diverse product portfolio, ranging from miniature circuit breakers for branch circuit protection to moulded case circuit breakers and air circuit breakers for main electrical panels or systems with high load currents.
LS ELECTRIC circuit breaker products are used in many types of projects, including:
- Houses and apartments.
- Shops and offices.
- Commercial buildings.
- Factories and manufacturing workshops.
- Distribution panels.
- Machinery control systems.
- Electrical substations and infrastructure projects.
- Residential and industrial electrical projects.
LS ELECTRIC Circuit Breaker Product Lines Supplied by HOANG NHAT
1. LS ELECTRIC MCB – Miniature Circuit Breaker
MCB is a compact circuit breaker that is commonly installed on DIN rails in residential electrical panels or branch distribution panels.
MCBs protect electrical circuits in the event of:
- Overload.
- Short circuit.
- Excessive current exceeding the current-carrying capacity of the conductor.
LS ELECTRIC MCBs are available in various rated currents, numbers of poles, and breaking capacities to suit different electrical systems.
The products are commonly used to protect:
- Lighting circuits.
- Electrical outlets.
- Air conditioners.
- Water heaters.
- Water pumps.
- Household electrical appliances.
- Control circuits.
- Electrical branches in distribution panels.
When selecting an MCB, customers need to check the rated current, number of poles, short-circuit breaking capacity, and tripping characteristics of the product.
2. LS ELECTRIC MCCB – Moulded Case Circuit Breaker
MCCB is a moulded case circuit breaker commonly used in systems with load currents or short-circuit currents greater than the typical application range of MCBs.
LS ELECTRIC MCCBs provide protection against:
- Overload.
- Short circuit.
- Certain additional protection functions depending on the specific model and protection unit.
LS ELECTRIC offers popular MCCB product lines such as Metasol and Susol, with various options for frame sizes, breaking capacities, and protection mechanisms.
MCCBs are commonly used in:
- Main electrical panels.
- Distribution panels.
- Factories and manufacturing workshops.
- Buildings.
- Shopping centers.
- Power systems.
- Industrial machinery.
- Electrical projects and installations.
Customers need to select MCCBs based on the load current, operating voltage, expected short-circuit current, and protection coordination requirements of the entire system.
3. LS ELECTRIC ELCB – Moulded Case Earth Leakage Circuit Breaker
ELCB is a type of circuit breaker capable of detecting leakage current and disconnecting the circuit when the leakage current exceeds the protection threshold of the device.
The product helps reduce risks related to:
- Electric shock.
- Leakage current to equipment enclosures.
- Fires caused by leakage current.
- Unsafe conditions in wet areas or on equipment with metal enclosures.
LS ELECTRIC ELCBs are commonly installed in:
- Main electrical panels.
- Branch electrical panels.
- Houses and buildings.
- Factories.
- Manufacturing workshops.
- High-humidity areas.
- Systems requiring earth leakage protection.
Many earth leakage circuit breakers are equipped with a TEST button used to check the operation of the leakage protection mechanism. Testing should be carried out in accordance with the technical instructions and safety procedures.
4. LS ELECTRIC RCCB – Residual Current Circuit Breaker
RCCBs detect the difference between the outgoing current and the returning current in a circuit. When leakage current exceeding the allowable threshold is detected, the device disconnects the power supply.
RCCBs are suitable for applications requiring enhanced protection against electric shock and reduced fire risk caused by leakage current.
The products are commonly used for:
- Residential electrical circuits.
- Electrical outlets.
- Water heaters.
- Bathrooms and wet areas.
- Outdoor electrical circuits.
- Equipment with a risk of leakage current.
RCCBs mainly provide residual current protection. Therefore, in many systems, RCCBs need to be installed together with an MCB or another appropriate overcurrent protection device.
5. LS ELECTRIC RCBO – Residual Current Circuit Breaker with Overcurrent Protection
RCBO is a device that integrates multiple protection functions into a single product, including:
- Overload protection.
- Short-circuit protection.
- Residual current protection.
Integrating multiple functions helps save space in electrical panels and provides convenience when independent protection is required for each electrical branch.
RCBOs are commonly used for:
- Water heaters.
- Washing machines.
- Air conditioners.
- Water pumps.
- Dedicated electrical outlets.
- Kitchen appliances.
- Outdoor electrical circuits.
- Electrical branches requiring individual protection.
When selecting an RCBO, customers need to check the rated current, number of poles, breaking capacity, and residual current rating of each model.
6. LS ELECTRIC ACB – Air Circuit Breaker
ACB is a low-voltage switching device used in systems with high current ratings. The device is commonly installed as the main circuit breaker in low-voltage electrical panels.
LS ELECTRIC provides Susol and Metasol air circuit breaker product lines. Depending on the configuration, ACBs can be equipped with electronic protection units as well as measurement, monitoring, or communication functions.
ACBs are commonly used in:
- Main low-voltage electrical panels.
- Transformer substations.
- Factories.
- High-rise buildings.
- Shopping centers.
- Hospitals.
- Data centers.
- Power distribution systems with high load currents.
ACB selection needs to be based on design documentation, operating current, short-circuit breaking capacity, and the protection coordination requirements of the system.
LS ELECTRIC Circuit Breaker Accessories
In addition to the main switching devices, HOANG NHAT also supports the supply and checking of accessories suitable for each LS ELECTRIC circuit breaker product line.
Some accessories may include:
- Auxiliary contacts.
- Trip indication contacts.
- Shunt trip coils.
- Undervoltage release coils.
- Extended rotary handles.
- Motor operators.
- Interlocking devices.
- Connection accessories.
- Terminal covers.
- Accessories for installation inside electrical panels.
Not all accessories can be used interchangeably with every model. Customers need to provide the exact circuit breaker model, number of poles, and frame size to check compatibility.
Benefits of Purchasing LS ELECTRIC Circuit Breakers from HOANG NHAT
When selecting LS ELECTRIC products from HOANG NHAT, customers receive support in checking products according to the actual requirements of their projects and electrical systems.
HOANG NHAT focuses on:
- Supplying products with the correct codes and ordered specifications.
- Supporting customers in distinguishing between MCB, MCCB, ELCB, RCCB, RCBO, and ACB.
- Checking rated current and number of poles.
- Checking short-circuit breaking capacity.
- Supporting the selection of appropriate protection functions.
- Checking accessories compatible with each model.
- Providing quotations according to quantity and specific requirements.
- Supporting catalogues and product documentation for each order.
- Serving residential customers, contractors, businesses, and project customers.
- Supplying circuit breakers together with equipment for installation in electrical panels as an integrated solution.
Information Required When Requesting a Quotation
To enable HOANG NHAT to check and quote the correct LS ELECTRIC products, customers should provide the following information in full:
- Type of device: MCB, MCCB, ELCB, RCCB, RCBO, or ACB.
- Product code, if available.
- Number of poles: 1P, 2P, 3P, or 4P.
- Rated current.
- Operating voltage.
- Short-circuit breaking capacity.
- Residual current rating if leakage protection is required.
- Type of protection unit.
- Required accessories.
- Product quantity.
- Requirements for technical documentation or certificates.
- Intended use and installation location.
The more complete the information provided, the faster and more accurate the product code checking and quotation process will be, helping to minimize the risk of ordering the wrong product or selecting incorrect specifications.
HOANG NHAT – Integrated Electrical Materials and Equipment Supply Solutions
In addition to LS ELECTRIC circuit breakers and switching devices, HOANG NHAT also supplies various groups of electrical materials and equipment for residential and industrial projects, including:
- Electrical wires and cables.
- Electrical panels and panel equipment.
- Contactors and thermal relays.
- Control and automation equipment.
- Variable frequency drives.
- Lighting equipment.
- Switches and sockets.
- Measuring devices.
- Earthing and lightning protection materials.
- Power line accessories.
- Other types of electrical materials for construction projects.
With the orientation of supplying the right products, with the correct specifications, and in accordance with actual requirements, HOANG NHAT Trading and Electrical Construction Joint Stock Company supplies LS ELECTRIC circuit breakers and integrated electrical equipment solutions to customers in Hai Phong, Hanoi and the northern provinces.
