11:28:04 AM | 10/30/2025
Recognizing this need, LS ELECTRIC Vietnam, a leading brand in low-voltage electrical equipment, has developed a comprehensive range of protective devices including MCB (Miniature Circuit Breaker), MCCB (Molded Case Circuit Breaker), RCCB (Residual Current Circuit Breaker), RCBO (Residual Current Circuit Breaker with Overcurrent Protection), and ELCB (Earth Leakage Circuit Breaker). These products combine high performance, compact design, and strong reliability to deliver complete protection solutions for modern electrical systems.
Within LS ELECTRIC https://www.ls-electric.com.vn/en/Vietnam’s protection ecosystem, the MCB plays a key role in safeguarding electrical circuits against overloads or short circuits. When the current exceeds the safe threshold, the MCB automatically disconnects the circuit, preventing system-wide failures and protecting wiring and connected devices.
The L-Series MCB from LS ELECTRIC Vietnam is a fully upgraded version that replaces previous models such as BKJ63N, BKN-b, and BKH. This marks an important step in the company’s global product standardization strategy, offering better protection, higher durability, and easier installation for users. The product meets international standards IEC 60898-1 and IEC 60947-2, with a breaking capacity of up to 15 kA and rated currents up to 125 A. With its compact design, flexible DIN-rail mounting, and stable operation under tropical climates, the L-Series is an ideal choice for residential systems, office buildings, and commercial facilities where efficiency and safety are essential.
For higher-level protection requirements, the MCCB is the optimal choice. With adjustable trip settings and rated current up to 1600 A, MCCBs are suitable for main switchboards, industrial distribution panels, and large machinery. The Susol MCCB series from LS ELECTRIC Vietnam is highly regarded for its breaking capacity of up to 85 kA and a wide range of accessories such as auxiliary contacts, status indicators, and interlock mechanisms, ensuring flexibility and operational safety.
Meanwhile, the ELCB is used to protect against earth leakage. However, ELCB technology is now considered outdated, as it depends on ground voltage and performs poorly when grounding conditions are insufficient. Therefore, newer-generation devices such as RCCB and RCBO have become the preferred replacements. The RCCB detects current imbalance between the live and neutral wires and instantly disconnects the circuit upon detecting even small leakages, preventing electric shock. The L-Series RCCB from LS ELECTRIC Vietnam supports AC, A, and B types, as well as time-delay models, meeting IEC safety standards and operating seamlessly with MCBs from the same series.
For dual protection needs, the RCBO combines the functions of both RCCB and MCB, providing leakage, overload, and short-circuit protection in a single device. The L-Series RCBO from LS ELECTRIC Vietnam offers high sensitivity (up to 30 mA), making it suitable for dedicated socket circuits and sensitive appliances such as water heaters, washing machines, and water pumps. Available in 1P+N or 2P configurations, the device is compact, easy to install, and optimized for premium residential systems, hotels, and office buildings.
Not only excellent in performance, LS ELECTRIC Vietnamhttps://www.ls-electric.com.vn/en/ also focuses strongly on product design guided by the philosophy “Small but Powerful.” The L-Series MCB in particular, and LS ELECTRIC’s low-voltage protection products in general, are built with heat-resistant, flame-retardant insulating enclosures that provide high mechanical strength. The contacts are specially treated to reduce arcing and extend service life, while built-in status indicators make inspection and maintenance easier for technicians. The dual protection system, thermal and magnetic, ensures quick response in any abnormal condition: the bimetal strip bends when overloaded, and the magnetic coil activates immediately during a short circuit, helping minimize damage to both equipment and users.
A major advantage of LS ELECTRIC Vietnam is its adaptability to local operating conditions. High temperatures, humidity, and dust are common challenges in construction sites, factories, and residential areas. The L-Series undergoes rigorous testing to ensure stable operation in harsh environments, maintaining precise technical parameters and long-term reliability. As a result, maintenance costs are reduced and system efficiency is preserved, giving users confidence throughout the product’s lifespan.
Beyond supplying individual devices, LS ELECTRIC Vietnam has built a comprehensive electrical protection ecosystem. The product range includes L-Series MCBs, RCCBs, and RCBOs for residential buildings, hotels, and apartments; Susol MCCBs for factories, shopping centers, and power stations; and auxiliary equipment such as contactors, thermal relays, MCB boxes, busbars, and DIN rails, creating a unified, safe, and modern solution. All products meet international standards, ensuring compatibility and stable operation in Vietnam’s climatic conditions.
Amid the ongoing shift toward cleaner energy, smart infrastructure, and higher electrical safety standards, LS ELECTRIC Vietnam reaffirms its role as a trusted partner of Vietnam’s electrical industry. The L-Series MCB is not only a technical product but also a reflection of the company’s commitment to sustainable development, aiming for an electrical system that is safe, efficient, and user-friendly. Combining advanced technology, compact design, and high quality, LS ELECTRIC Vietnam continues to work alongside businesses, engineers, and investors to build a modern electrical network where safety, efficiency, and sustainability are top priorities.
Hoang Bach (Vietnam Business Forum)
Vietnamese
