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LEM – Experts for current measurement

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About the company LEM

LEM offers innovative and high-quality solutions for measuring electrical parameters.
The current and voltage transformers are used in industry, traction, automation and automotive LEM is the market leader in providing innovative and high-quality solutions for measuring electrical parameters.
Its core products – current and voltage transformers – are used in a wide range of applications in the fields of drives and welding, renewable energy and power supplies, traction, high precision, conventional and environmentally friendly vehicles.

LEM Product Finder

You can configure your product yourself in the LEM product finder.
Please follow the links below to access our LEM database.
Here you can find the desired component and data sheet with just a few clicks.

Current Sensors

LEM is a leading supplier of current sensors (also known as current transformers) and offers a wide range of galvanically isolated sensors that have become the industry standard.
The wide range of sizes, the measuring range from 1mA to 20kA and the integration options, busbar or PCB mounting, make them ideal solutions for a wide range of applications.

Voltage Sensors

LEM offers a wide range of voltage sensors (also called voltage transformers) for the isolated measurement of voltages.
The wide product range measures voltages from 10 V to 6.4 kV, using a variety of technologies including Hall effect, fluxgate and isolating digital technology.

Integrated Current Sensors

Current sensors need to become smaller, smarter and cheaper.
LEM’s research and development department is actively working on the development of a range of ICS to reduce the footprint of the current measurement function and simplify the integration of current measurement in a variety of automotive, industrial or residential applications.

Rogowski Coil

LEM’s patented Rogowski coil with ferrite inside the housing is currently the best locking system on the market.

Energy Meters

LEM offers a wide range of solutions for measuring energy in different areas.
These solutions provide users with real, precise and controlled energy measurement.

EV Charger

One of the biggest challenges of the 21st century will be the
decarbonization of the traditional transport sector, which is responsible for over
25% of global CO2 emissions.

The LEM residual current circuit-breaker portfolio for 6 mA DC / 30 mA AC complies with the IEC 62752 and UL 2231 standards.