Transformer innovators since 1945


LEM is market leader in providing innovative and high quality solutions for measuring electrical parameters.



Its core products – current and voltage transducers - are used in a broad range of applications in industrial, traction, energy and automotive markets. LEM’s strategy is to exploit the intrinsic strengths of its core business, and develop opportunities in
new markets with new applications. Together with production plants in Geneva (Switzerland), Machida (Japan), Beijing, (China) and our regional sales offices, LEM and its 1100 employees offer a seamless worldwide service.

LEM has been listed on the SIX Swiss Exchange since 1986.
The company’s ticker symbol is LEHN.



Catalogue Railway Current & Voltage Transducers

EM4T Energy meter for Traction usable on each network



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