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Indoor high-voltage vacuum circuit breaker series Microcomputer Protection Device Series Low-voltage product series Thermal overload relay series Multifunctional Instrument and Power Monitoring System Solution Three-position electrical appliance series Outdoor High Voltage Vacuum Circuit Breaker Series High-load switch series Active filtering and reactive power compensation series Circuit breaker component design and modification

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Empowering New Energy with Smart Technology

Lianli Switchgear provides robust power supply for new energy applications such as photovoltaics, wind power, and energy storage.

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Serving photovoltaic power generation and empowering rail transit

Lianli Switches helps various industries achieve low-carbon transformation with its green products.

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Green every degree, carbon-based new future

Green quality control across the entire supply chain and low-carbon management throughout the entire life cycle

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Shenzhen Lianli Switch Co., Ltd.
Focusing on the new blueprint of "dual carbon" · Intelligent manufacturing of safe and efficient new power

We are a professional enterprise integrating R&D, manufacturing, sales and service of high and low voltage electrical components.

The company relies on rigorous quality control and intelligent testing technology across the entire supply chain. Its products have passed multiple certifications, providing a solid guarantee for the safe operation of the power system with its superior technology.

Entering

Continuous innovation and diversified products

To provide the most solid support for every kilowatt-hour of electricity in the world.

Indoor high-voltage vacuum circuit breaker series

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Millisecond-level decision-making safeguards the lifeline of the power grid.

Microcomputer Protection Device Series

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Focusing on low-voltage power distribution, we have built a solid foundation for safety.

Low-voltage product series

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The 'Anti-Fatigue Expert' in Industrial Sites

Thermal overload relay series

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Precise down to every kilowatt-hour, fair down to every cent

Multifunctional Instrument and Power Monitoring System Solution

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Three-position interlocking, five-level protection

Three-position electrical appliance series

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Ten thousand operations without failure, ten years of maintenance-free operation.

Outdoor High Voltage Vacuum Circuit Breaker Series

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The electric arc has nowhere to hide, and the contacts remain as good as new over time.

High-load switch series

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Harmonics are constantly changing, but I keep tracking them in sync.

Active filtering and reactive power compensation series

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Provide one-stop
Green Power Solutions

Rail transit

In the field of rail transit, which demands extreme safety and reliability, low-voltage electrical components form the fundamental framework of the entire power supply and control system. Whether it's the speeding trains themselves or the numerous underground substations and roadside facilities,

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New energy power generation

In the new energy sector, low-voltage electrical components are undergoing a transformation from a "supporting role" to a "core support." Scenarios such as photovoltaics, wind power, energy storage, and charging piles place demands on power distribution equipment in terms of volt

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Petrochemical

In the petrochemical industry, a typical high-risk, continuous production sector, the safety and stability of power supply are directly related to production efficiency and personnel safety. Oil refining and oil and gas extraction processes involve large quantities of flammable and explosive media a

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Metallurgical smelting

In the heavy industrial sector of metallurgy and smelting, characterized by high temperatures, dust, and continuous operation, low-voltage electrical components are a crucial foundation for ensuring production safety and efficiency. The harsh working conditions commonly found in smelting workshops,

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Customer first, dedicated service
We are committed to creating value for our customers, and our partners are located all over the world.

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Partners

News and Information

The "Carbon Path" of Low-Voltage Electrical Appliances during the 15th Five-Year Plan: From Energy-Saving Components to Green Systems, New Energy Drives Industry Value Restructuring

2026-06-30

Shenzhen Lianli Switch Co., Ltd.: Looking to the Future

2026-07-24

Causes and countermeasures for frequent tripping of universal circuit breakers

2026-07-24

Principle and function of high voltage vacuum circuit breakers

2026-07-24

Causes of circuit breaker closing failure

2026-07-24

What are the key points for daily maintenance of miniature circuit breakers?

2026-07-24

Every kilowatt-hour of electricity is counted as a "tree".

Lianli Switches: Reducing the Burden on the Earth
Use green to create green, and use sustainability to empower sustainability.
Leveraging corporate strength in global green and low-carbon development