Circuit breaker
High Voltage Transformer High Voltage Transformer
LW10B-126KV
LW10B-126kV is outdoor three-phase AC 50Hz high voltage SF6 circuit breaker, specially developed for 126kV (110kV grade) power transmission and transformation system. Sulfur hexafluoride gas is used as insulating and arc extinguishing medium, equipped with mature hydraulic operating mechanism, complying with IEC62271 and GB standard specifications.
This high voltage circuit breaker is mainly used for closing, opening normal load current and short-circuit fault current in power substations, thermal power plants, hydropower stations and industrial large-scale power supply projects. It undertakes system control and short-circuit protection functions for high voltage power grid.
LW16-40.5
LW16-40.5 is an outdoor three-phase AC high voltage SF6 circuit breaker designed for 40.5kV (35kV class) power transmission and distribution systems. It uses SF6 gas as insulation and arc extinguishing medium, equipped with spring operating mechanism, and meets IEC and GB standards.
This product is mainly used in power substations, industrial and mining enterprises, power plants and distribution networks to control and protect circuits. It can reliably switch rated load current and short-circuit current, with stable performance, long service life, low gas leakage rate and easy maintenance.
It is suitable for outdoor environments and can be widely used in power grid transformation, new construction and renovation projects of 35kV / 40.5kV power systems.
LW17-35KV
LW16-40.5 is an outdoor three-phase AC high voltage SF6 circuit breaker designed for 40.5kV (35kV class) power transmission and distribution systems. It uses SF6 gas as insulation and arc extinguishing medium, equipped with spring operating mechanism, and meets IEC and GB standards.
This product is mainly used in power substations, industrial and mining enterprises, power plants and distribution networks to control and protect circuits. It can reliably switch rated load current and short-circuit current, with stable performance, long service life, low gas leakage rate and easy maintenance.
It is suitable for outdoor environments and can be widely used in power grid transformation, new construction and renovation projects of 35kV / 40.5kV power systems.
LW24-35kv
LW24-35kV is an outdoor three-phase AC high voltage SF6 circuit breaker used in 35kV (40.5kV class) power transmission and distribution systems. It adopts SF6 gas as insulation and arc extinguishing medium, equipped with spring operating mechanism, and complies with IEC and GB standards.
This breaker is mainly used in power substations, industrial and mining enterprises, power plants and distribution networks to control and protect circuits. It can safely switch load current and short-circuit current, with low gas leakage rate, long mechanical life, compact structure and easy installation.
It is widely used in outdoor power grid construction, renovation projects and industrial power systems, providing stable and reliable protection for 35kV power equipment.
LW25□-252
LW25□-252 SF6 High Voltage Circuit Breaker Introduction
LW25□-252 is three-phase AC 50Hz outdoor extra-high voltage SF6 circuit breaker, designed for 252kV(220kV grade) power transmission and transformation system. The product takes sulfur hexafluoride(SF6) as insulation and arc-extinguishing medium, equipped with mature hydraulic operating mechanism, fully conforming to IEC62271 and domestic GB standard requirements.
The circuit breaker is widely applied in 220kV backbone power grid substations, thermal power plants, hydropower stations, new energy booster stations and large industrial power supply projects. It realizes reliable closing, opening of normal load current and short-circuit fault current, serving as core control and protection equipment for EHV power transmission system.
Product Core Advantages
Superior SF6 arc-quenching performance, strong short-circuit breaking capacity, stable operation under complex grid working conditions;
Optimized hydraulic operating mechanism, small operation impact, low failure rate, long service cycle;
Advanced overall sealing technology, ultra-low annual SF6 leakage rate, fewer routine maintenance;
Rational modular structure, convenient field assembly and overhaul, strong environmental adaptability for outdoor high-low temperature, rainy and windy areas.
Main Technical Parameters
Rated voltage:252kV
Rated frequency:50Hz
Rated current:2000A/2500A/3150A
Rated short-circuit breaking current:40kA,50kA
Driving mode:Hydraulic operating mechanism
Application:220kV power grid, power station, photovoltaic & wind power booster substation
LW27-35KV
LW27-35kV is an outdoor three-phase AC high voltage SF6 circuit breaker designed for 35kV (40.5kV class) power transmission and distribution systems. It uses SF6 gas as insulation and arc extinguishing medium, equipped with spring operating mechanism, and meets IEC and GB standards.
This breaker is mainly used in power substations, industrial and mining enterprises, power plants and distribution networks to control and protect circuits. It can reliably switch load current and short-circuit current, with stable performance, low gas leakage rate, long mechanical life and easy maintenance.
It is widely used in outdoor power grid construction, renovation projects and industrial power systems, providing safe and stable protection for 35kV power equipment.
LW32-126KV
LW32-126kV is an outdoor three-phase AC high voltage SF6 circuit breaker designed for 126kV (110kV class) power transmission and distribution systems. It uses SF6 gas as insulation and arc extinguishing medium, equipped with hydraulic operating mechanism, and complies with IEC62271 and GB standards.
This breaker is mainly used in power substations, power plants, industrial power systems and grid projects to control and protect circuits. It can reliably switch load current and short-circuit current, with excellent performance, low gas leakage rate, long mechanical life and stable outdoor operation.
It is widely used in 110kV/126kV power grid construction, renovation and new energy power stations, providing safe and reliable protection for high voltage power equipment.
LW33-126KV
LW33-126kV is an outdoor three-phase AC high voltage SF6 circuit breaker designed for 126kV (110kV class) power transmission and distribution systems. It uses SF6 gas as insulation and arc extinguishing medium, equipped with hydraulic operating mechanism, and complies with IEC62271 and GB standards.
This breaker is mainly used in power substations, power plants, industrial power systems and grid projects to control and protect circuits. It can reliably switch load current and short-circuit current, with stable performance, low gas leakage rate, long mechanical life and strong outdoor adaptability.
It is widely used in 110kV/126kV power grid construction, renovation and new energy power stations, providing safe and reliable protection for high voltage power equipment.
LW34-126KV
LW34-126kV is an outdoor three-phase AC high voltage SF6 circuit breaker designed for 126kV (110kV class) power transmission and distribution systems. It uses SF6 gas as insulation and arc extinguishing medium, equipped with hydraulic operating mechanism, and complies with IEC62271 and GB standards.
This breaker is mainly used in power substations, power plants, industrial power systems and grid projects to control and protect circuits. It can reliably switch load current and short-circuit current, with stable performance, low gas leakage rate, long mechanical life and strong outdoor adaptability.
It is widely used in 110kV/126kV power grid construction, renovation and new energy power stations, providing safe and reliable protection for high voltage power equipment.
LW36-40.5
The LW36-40.5 is a professional outdoor high-voltage SF6 circuit breaker designed for 40.5kV (35kV level) power transmission and distribution systems. Manufactured in full compliance with IEC and international industrial standards, this circuit breaker is widely used in power substations, power plants, industrial power distribution systems and new energy power grid projects for reliable circuit switching, overload protection and short-circuit fault protection.
Adopting sulfur hexafluoride (SF6) gas as insulating and arc-extinguishing medium, the LW36-40.5 circuit breaker features excellent arc extinguishing capacity and strong dielectric performance. It applies a self-energy arc extinguishing structure, which ensures fast and stable breaking operation even under severe short-circuit conditions. Compared with traditional vacuum circuit breakers, this SF6 breaker has lower operating energy, smaller mechanical wear and higher operational safety.
Equipped with a high-precision spring operating mechanism, the LW36-40.5 outdoor circuit breaker realizes consistent closing and opening actions with low failure rate. The fully sealed and integrated structure effectively prevents dust, moisture and corrosive substances from entering the interior, making it highly adaptable to various complex outdoor environments, including high altitude, high humidity, coastal salt fog and severe cold weather.
This 40.5kV SF6 circuit breaker supports multiple current and level specifications to meet different engineering demands. It features simple structure, convenient installation and extremely low daily maintenance requirements, which greatly reduces later operation and maintenance costs for power grid projects. With stable mechanical performance, strong breaking capacity and long service life, the LW36-40.5 circuit breaker has become a mainstream preferred device for medium and high voltage power grid construction and renovation projects worldwide.
We provide genuine factory direct sales, customized technical parameters and complete after-sales service for global customers. All products have passed strict quality testing to ensure stable and reliable long-term operation of power systems.
LW36-72.5
The LW36-72.5 is a high-performance outdoor three-phase AC high-voltage SF6 circuit breaker developed for 72.5kV power transmission and distribution systems. Complying strictly with IEC 62271-100 and national GB standards, this professional high voltage switchgear is widely applied in large-scale power substations, thermal power plants, wind power bases, photovoltaic power stations and industrial heavy-duty power grid systems for circuit switching, overload protection and short-circuit fault isolation.
Adopting high-purity SF6 gas as the insulating and arc-extinguishing medium, the LW36-72.5 circuit breaker adopts advanced self-energy arc extinguishing technology. It delivers outstanding dielectric insulation performance and ultra-strong short-circuit breaking capability, ensuring rapid and stable arc extinction in extreme fault conditions. Compared with conventional high voltage breakers, this model features lower operating power, minimal mechanical impact and extremely low failure rate during long-term cyclic operation.
Equipped with a reliable high-strength spring operating mechanism, the LW36-72.5 outdoor circuit breaker achieves precise and consistent closing and opening actions. The overall fully sealed integrated structure is professionally treated with anti-corrosion, dust-proof and moisture-proof technology. It can adapt to harsh outdoor working environments, including high altitude, low temperature, coastal salt fog, heavy dust and strong wind, maintaining stable operation in all-weather conditions.
The LW36-72.5 SF6 circuit breaker supports multiple mainstream specifications of rated current and short-circuit breaking current to meet diverse requirements of national and international power engineering projects. With a compact and reasonable structural design, it is easy to install and debug on site, requiring almost no daily maintenance. It effectively reduces the operation and maintenance cost of power grid equipment and improves the overall operational efficiency of the power system.
As a core 72.5kV high voltage power device, the LW36-72.5 circuit breaker features high safety coefficient, stable mechanical performance and ultra-long service life. We provide global customers with factory direct sales, customizable technical solutions, complete product certification and professional after-sales support, ensuring reliable and safe operation of various high-voltage power projects.
LW36-126T3150-40
Designed for medium and high voltage power grid infrastructure, the LW36-126T3150-40 is a professional outdoor SF6 circuit breaker rated at 126kV. Complying with IEC and GB international industry standards, this high-performance switchgear is configured with 3150A rated current and 40kA short-circuit breaking capacity, making it perfectly suited for industrial power distribution, large-scale substations, power plants, and new energy grid projects worldwide.
This 126kV outdoor circuit breaker adopts high-purity SF6 gas as the insulation and arc-extinguishing medium, paired with mature self-energy arc extinguishing technology. The optimized structural design delivers excellent dielectric performance and reliable fault resistance, enabling fast and safe isolation of short-circuit and overload faults. With low mechanical loss and low operating power consumption, the equipment maintains stable operational performance during long-term cyclic work, far exceeding the stability of conventional high voltage switchgear.
Built with a high-strength spring operating mechanism, the switchgear achieves precise, consistent closing and opening actions with an extremely low failure rate. The fully sealed integrated body undergoes professional anti-corrosion, waterproof, dustproof and salt-fog resistant processing. It adapts to diverse harsh outdoor working conditions, including high altitude, low temperature, coastal corrosive environments and windy and dusty areas, realizing all-weather safe and stable operation without frequent maintenance.
The matched 3150A large current carrying capacity and 40kA strong short-circuit breaking capability fully meet the high-load operation demands of backbone power grid projects. Featuring a compact and reasonable layout, the breaker is easy to install and debug on site, greatly reducing later operation and maintenance costs for power engineering projects. Its superior mechanical safety and operational stability ensure long-term uninterrupted operation of high-voltage power systems.
Widely recognized as reliable core equipment for 126kV power grid construction and renovation, this SF6 circuit breaker features high safety factor, outstanding environmental adaptability and ultra-long service life. Our factory provides standardized and customized technical solutions, complete qualification certifications, global logistics services and one-stop professional after-sales support to create high-value power equipment solutions for global engineering customers.
