Company lists · Data refreshed September 2026
Top 23 Isolator manufacturers based in France
RevenueBase identified 47 isolator manufacturers headquartered in France as of September 2026 and tracks 957 professional contacts across them, including 369 with verified work emails. Dagneux is the largest hub.
This list covers isolator manufacturers headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 23 largest isolator manufacturers based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 212 contacts → | ||||
Indirect evidence “For 75 years Sediver has specialized in overhead line insulation technology - research, design, manufacturing, testing and supply of insulators for AC and DC applications designed…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 89 contacts → | ||||
Indirect evidence “STERIGENE est une entreprise d'ingénierie des procédés propres et stériles dont les différentes activités consistent toujours, après l'écoute de ses clients, à concevoir, réaliser…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 69 contacts → | ||||
Partial evidence “Jacomex has specialized for 80 years in the conception and manufacturing of glove boxes, isolators and purification units.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 63 contacts → | ||||
Partial evidence “EREA Clean Air Systems offers a complete range of isolators, laminar flows, safety cabinets, weighing stations, transfer trolleys equipped with LAF (Laminar Air Flow), in general…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 61 contacts → | ||||
Partial evidence “The Socitec Group is a world leader in supplying shock and vibration isolation solutions.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 58 contacts → | ||||
Partial evidence “Forte de 30 années d’expérience dans la conception, la fabrication et la maintenance d’isolateurs sur mesure et de solutions personnalisées en isotechnie, plaçant flexibilité et…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 29 contacts → | ||||
Partial evidence “At SEG DIELECTRIQUES, we take great pride in being a leading manufacturer of dielectric insulation, catering to the rapidly growing field of e-mobility, Transformers, Electric…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 23 contacts → | ||||
Indirect evidence “EUROFLUX réalise l’étude, la conception, l’installation et la validation de salles blanches et équipements pour la maîtrise de l’aérobiocontamination (flux unidirectionnels…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 22 contacts → | ||||
Indirect evidence “Une gamme complète au service de la sécurité des postes de transformation électrique : Bacs de rétention métal, béton ou membrane PVC Systèmes anti-feu : bacs de rétention…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 19 contacts → | ||||
Strong evidence “Cefem Process manufactures visible break industrial switch / Local Isolator Switch - LIS.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 18 contacts → | ||||
Partial evidence “Simelectro P&S,part of the french group AK Group, is a global leader in design and fabrication of Isolated Phase Busduct (IPB), Segregated & Non-Segregated Phase Busducts (SPB &…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 14 contacts → | ||||
Indirect evidence “Spécialiste des transformateurs de mesure depuis 1954, RS ISOLSEC offre une large gamme de transformateurs de courant, transformateurs de tension, transformateurs de protection…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 contacts → | ||||
Partial evidence “SMI, Société Moderne d’Isolation, est un spécialiste de l’isolation technique dédiée aux professionnels du calorifugeage.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 9 contacts → | ||||
Partial evidence “AC/DC electrical devices - Rail systems - Thermal and electrical isolators” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 contacts → | ||||
Indirect evidence “La société DUFFAY est concepteur, fabricant et installateur d’ensembles et sous-ensembles pour salles blanches depuis 49 ans pour les secteurs de l’industrie pharmaceutique…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 8 contacts → | ||||
Indirect evidence “Nous sommes la seule entreprise du marché spécialisée dans les applications de haute pureté en même temps que les applications de biosécurité.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 8 contacts → | ||||
Indirect evidence “SANERGRID® is part of @Groupe SANERGRID, the @SANERGRID activity focuse its expertise in the design, engineering, and manufacturing of solutions for environmental protection…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Partial evidence “Sistac, créée en 1990, est spécialisée dans l’isolation sur-mesure à destination des industriels intégrateurs.(OEM) L’isolation dans l’industrie est aujourd’hui incontournable, et…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “Created in 2012, SIA (Air Science and Engineering) is a design office (clean room, controlled atmosphere environment) Specialized in engineering and design of cleanroom and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “Fabricant Français de solutions étanches, déployables, gonflables pour les environnements contrôlés ou nécessitant une étanchéité totale l'air, à l'eau, aux gaz.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “EDRATEC SOLUTIONS propose la réalisation de solutions sur-mesure d’éléments coupe-feux,isolants thermiques et acoustiques.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: isolator manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names isolator manufacturers.
- Partial evidence
- Its own public description names part of isolator manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name isolator manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 23 of 47 isolator manufacturers based in France
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Isolator manufacturers based in France at a glance
As of Sep 30, 2026Companies by employee count
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 47 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among isolator manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in France whose own description of what they do matches “isolator manufacturers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names isolator manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among isolator manufacturers, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 369 across the full list. 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.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names isolator manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many isolator manufacturers are there based in France?
RevenueBase identified 47 isolator manufacturers headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Sediver, headquartered in Courbevoie, tops this list with the largest team on record.
Which city has the most isolator manufacturers?
Dagneux leads with 2 headquartered companies, followed by Lourdes (2) and Montpellier (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 369 verified decision-maker contacts tracked across these 47 companies.
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 Smart Search, 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.