Nidec Leroy-Somer
Nidec Leroy-Somer is a French manufacturer of electric motors and an operating brand within Japan's Nidec Group.
Last updated August 31, 2026
AI crawler reads
No AI crawler has read this profile since Oct 28, 2026.
Overview
Nidec Leroy-Somer is a French industrial manufacturer headquartered in Angoulême, in the Charente department of southwestern France. The company was established in 1919 by Marcellin Leroy and developed around the design and manufacture of electric motors. Its historical identity is closely associated with industrial electromechanical engineering and with the Leroy-Somer name, which remains in use within the wider Nidec organization. The company's principal activity is the manufacture of electric motors. Its products serve industrial and commercial applications that require the conversion of electrical energy into mechanical motion. The available reference material identifies electric motors as the firm's main manufacturing focus, but does not provide a sufficiently detailed product catalogue, revenue breakdown, customer list, or market-share data. Accordingly, the brand is best characterized as an industrial business-to-business manufacturer rather than a consumer-facing brand. Leroy-Somer expanded beyond its French base over time, establishing or operating activities in several European and Asian countries. The cited markets include the Czech Republic, Hungary, Poland, Romania, China, and India. This geographic footprint reflects the company's role as an international industrial supplier, with manufacturing and commercial reach extending beyond France. The reference material reports almost 10,000 employees across the organization, although no dated workforce source or precise allocation by country is provided. A major ownership transition occurred on January 31, 2017, when Leroy-Somer became part of the Japanese Nidec Group. The transaction placed the French motor manufacturer within one of the world's large electric-motor and motion-related industrial groups. Under Nidec ownership, the Leroy-Somer name continues to identify the French business and its associated industrial capabilities, while the parent group provides a broader international corporate framework. Nidec Leroy-Somer's positioning is therefore based on industrial heritage, electric-motor manufacturing, and international integration. Its long history beginning in 1919 is a notable part of its identity, while its current status is defined by membership in Nidec rather than by independence as a standalone corporate group. Publicly available material supplied for this dossier does not establish a detailed chronology of product generations, advertising campaigns, executive appointments, litigation, recalls, or financial performance. Those fields are consequently kept limited rather than supplemented with unsupported claims.
History
Nidec Leroy-Somer traces its origins to 1919, when Marcellin Leroy established the company in France. From its base in Angoulême, Charente, the business developed as an electrical-equipment manufacturer with a principal emphasis on electric motors. The founding date places the company among the long-established participants in the French electromechanical sector. Over the course of its development, Leroy-Somer expanded its activities outside France. The available reference identifies operations or expansion in the Czech Republic, Hungary, Poland, Romania, China, and India. This international presence gave the company a broader European and Asian footprint and supported its role as an industrial supplier serving customers across multiple markets. The source material also describes the organization as employing almost 10,000 people, although the date and precise scope of that figure are not specified. The company's core business has remained centered on electric motors. These products are used in industrial systems where electrical power must be converted into controlled mechanical movement. The supplied references do not provide enough information to reconstruct a complete chronology of product families, facilities, acquisitions before 2017, or changes in management, so the historical record here focuses on the documented corporate milestones. The most important recent turning point was the ownership change completed on January 31, 2017. Leroy-Somer became part of the Japanese Nidec Group, a transaction that brought the French manufacturer into a larger international organization focused on motors and related motion technologies. The Leroy-Somer name continued as the identity of the French business within the Nidec structure, while the parent group became responsible for the broader corporate framework. Today, Nidec Leroy-Somer is characterized by the combination of a French industrial heritage dating from 1919, a principal specialization in electric-motor manufacturing, and international operations extending across Europe and Asia. It is not presented in the available material as a consumer brand or as an independently listed company. No reliable source was supplied for current senior executives, detailed financial results, standalone listing information, or a comprehensive catalogue of current products; those aspects remain unspecified in this entry.
- 2017
Integration into the Nidec Group
[1]On January 31, Leroy-Somer became part of the Japanese Nidec Group and continued as a French electric-motor business within the group.
- 1919
Company established
[1]Marcellin Leroy established the company in France, creating the business that later became known as Leroy-Somer.
Products and positioning
A long-established French business-to-business manufacturer focused primarily on industrial electric motors, now operating within the global Nidec Group.
Electric motors
Industrial electric motors
Electric motors are the company's principal documented product category. They convert electrical energy into mechanical motion for industrial and commercial equipment. The supplied reference identifies motor manufacture as the firm's main activity but does not specify individual motor families, ratings, technologies, application sectors, or current model names.
Brand decisions
2017
Join the Nidec GroupM&ABackground
Leroy-Somer was an established French manufacturer of electric motors with international operations before its integration into Nidec.
Action taken
On January 31, 2017, Leroy-Somer became part of Japan's Nidec Group.
Aftermath
The business became part of Nidec's international corporate structure while retaining the Leroy-Somer identity and its French industrial base.
Sources1 sources
Cite this profile: Cite the canonical profile. /brand-wiki/nidec-leroy-somer · Editorial policy · How profiles are compiled