Company lists · Data refreshed September 2026

Top 16 Switching transformer manufacturers based in France

Name: Switching transformer manufacturers based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 26 companies tracked

RevenueBase identified 26 company matches for switching transformer manufacturers associated with France as of September 2026 and tracks 460 professional contacts across them, including 186 with verified work emails. Claix is the largest hub.

This list covers company matches for switching transformer manufacturers associated with France, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 30, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 30, 2026 How this list was built

26Companies

460Contacts tracked

186Verified emails

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The 16 largest switching transformer manufacturers based in France

Ranked by team size

Top 16 of 26 company matches for switching transformer manufacturers based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Green Transfo SAS	Exact match	Cahors, FranceHQ recorded Sep 30, 2026	1,001-5,000	164 contacts →
	Exact match “At Green Transfo SAS, we are dedicated to providing our customers with the highest level of satisfaction through our commitment to quality products and exceptional service.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	Bernard Bonnefond	Exact match	St Etienne, FranceHQ recorded Sep 30, 2026	11-50	25 contacts →
	Exact match “VARIVOLT is an on-load stepless variable voltage transformer (0–20 MVA), used in the glass, steel, chemical industries, and test platforms.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	Cefem Group	Exact match	Saint Michel De Boulogne, FranceHQ recorded Sep 30, 2026	51-200	24 contacts →
	Exact match “The Cefem Group has been developing and manufacturing products since 1987 around 3 Business Units: Cefem Power: Power electronics, through the design and manufacture of…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	MYRRA	Exact match	Bussy-saint-georges, FranceHQ recorded Sep 30, 2026	201-500	24 contacts →
	Exact match “Myrra design and manufacture high-quality transformers and inductors for industrial use.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Securelec Socem	Exact match	Courrières, FranceHQ recorded Sep 30, 2026	11-50	22 contacts →
	Exact match “Depuis 1954, Securelec Socem conçoit et fabrique des transformateurs et équipements électriques, du standard au sur-mesure.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	LE Cosinus Transformateurs Électriques ET Bobinages	Exact match	77330, FranceHQ recorded Sep 30, 2026	11-50	17 contacts →
	Exact match “Située en Ile de France, proche de Marne La Vallée, la société Le Cosinus se veut LE spécialiste de la conception et de la fabrication de transformateurs (Mono ou Triphasé) et…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	RS Isolsec France	Exact match	Cepoy, FranceHQ recorded Sep 30, 2026	51-200	14 contacts →
	Exact match “Spécialiste des transformateurs de mesure depuis 1954, RS ISOLSEC offre une large gamme de transformateurs de courant, transformateurs de tension, transformateurs de protection…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	AGCEI	Exact match	Claix, FranceHQ recorded Sep 30, 2026	11-50	13 contacts →
	Exact match “Nous vous proposons une offre complémentaire en transformateurs et inductances basse et moyenne tension.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	Soudax Equipements	Exact match	Epone, FranceHQ recorded Sep 30, 2026	11-50	13 contacts →
	Exact match “Building on French know-how in the end-to-end manufacture of transformers, Soudax has been carving out a place in the precision industry since 1973 to meet the requirements of…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	CIRCÉ	Exact match	Parigné-l’évêque, FranceHQ recorded Sep 30, 2026	11-50	11 contacts →
	Exact match “Recognised specialist in the design and manufacturing of winding products and customised systems, Circé offers you a wide range of single-phase, three-phase, three-to-single-phase…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	CHB Electronique	Exact match	Landes, FranceHQ recorded Sep 30, 2026	11-50	8 contacts →
	Exact match “ISO9001:2015 Manufacturer of Custom Transformers & Coils for PCB from 1W to 3KW.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	Sanergrid	Exact match	Lyon, FranceHQ recorded Sep 30, 2026	11-50	8 contacts →
	Exact match “SANERGRID® is part of @Groupe SANERGRID, the @SANERGRID activity focuse its expertise in the design, engineering, and manufacturing of solutions for environmental protection…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Transfos Mary	Exact match	Clermont Ferrand, FranceHQ recorded Sep 30, 2026	11-50	8 contacts →
	Exact match “Transfos MARY est une PME française basée à Clermont-Ferrand en Auvergne depuis 1949, filiale du groupe industriel familial LUVICA installé à Montluçon.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	Merot Sodex	Exact match	Loches, FranceHQ recorded Sep 30, 2026	11-50	4 contacts →
	Exact match “MEROT-SODEX conçoit et fabrique des transformateurs électriques selon vos spécifications depuis 1920.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	SNT - Duriez	Exact match	Le Grand Quevilly, FranceHQ recorded Sep 30, 2026	1-10	2 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	Transfo Industrie	Exact match	Gargenville, FranceHQ recorded Sep 30, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “switching transformer manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 16 of 26 switching transformer manufacturers based in France

See the full list, filter by size, metro and specialty, and access 186 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Switching transformer manufacturers based in France at a glance

As of Sep 30, 2026

40.4%Verified-email coverage

17.7Average contacts per company

11-50Median size (employees)

7.7%Largest-city concentration · Claix

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 26 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with France whose business descriptions match “switching transformer manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 186 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 30, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “switching transformer manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many switching transformer manufacturers are there based in France?

RevenueBase identified 26 company matches for switching transformer manufacturers associated with France as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Green Transfo SAS tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most switching transformer manufacturers?

Claix leads with 2 company records, followed by Paris (2) and Bussy-Saint-Georges (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 186 professional contacts with verified work emails tracked across these 26 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.