Company lists · Data refreshed November 2026

Top 25 Transformer insulation suppliers worldwide

RevenueBase identified 1,374 company matches for transformer insulation suppliers worldwide as of November 2026 and tracks 20,313 professional contacts across them, including 3,732 with verified work emails. India is the largest market and Vadodara the largest hub.

This list covers company matches for transformer insulation suppliers worldwide, 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 November 2, 2026. Country and city lists for transformer insulation suppliers follow the table.

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 Nov 2, 2026 How this list was built
1,374Companies
20,313Contacts tracked
3,732Verified emails
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The 25 largest transformer insulation suppliers worldwide

Ranked by team size
Top 25 of 1,374 company matches for transformer insulation suppliers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 2, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHyderabad, IndiaHQ recorded Nov 2, 20265,001-10,000952 contacts →

Exact match

“Vijai Electricals Ltd.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
2Exact matchBalıkesir, TürkiyeHQ recorded Nov 2, 20261,001-5,000786 contacts →

Exact match

“BEST Transformer, founded in 1966 in Balıkesir, produces oil-immersed distribution transformers, power transformers, cast resin dry-type transformers, reactors, and mechanical…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
3Exact matchVadodara, IndiaHQ recorded Nov 2, 2026501-1,000508 contacts →

Exact match

“Voltamp Transformers Limited is a Oil filled Power, Distribution and Dry type Transformer manufacturing company based in Vadodara, Gujarat State in India since year 1967.The…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
4Exact matchBasiskele, TürkiyeHQ recorded Nov 2, 20261,001-5,000460 contacts →

Exact match

“ENPAY is the Pace-Setter of Transformer Industry serving to its customers from its 4 Plants Worldwide.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
5Exact matchWesel, GermanyHQ recorded Nov 2, 20261,001-5,000419 contacts →

Exact match

“Please note that this account is no longer being actively managed.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
6Exact matchRegensburg, OH, GermanyHQ recorded Nov 2, 20261,001-5,000324 contacts →

Exact match

“Welcome to the SGB-SMIT Group, the pure-play transformer specialist from Europe with the highest customer dedication.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
7Exact matchGreer, ID, United StatesHQ recorded Nov 2, 2026201-500311 contacts →

Exact match

“Maddox serves the commercial, industrial, utility, and renewables segments of the transformer market.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
8Exact matchTürkiyeHQ recorded Nov 2, 2026501-1,000303 contacts →

Exact match

“We are proud to announce that in this year, our new production facility equipped with the best, modern machines and equipment at m² open area, was started the production with…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
9Exact matchGlen Waverley, AustraliaHQ recorded Nov 2, 2026501-1,000295 contacts →

Exact match

“THE TRANSFORMER SOLUTION SPECIALIST Established in 1933 with a proud history, Wilson Transformer Company is a leading specialist in the delivery of transformer solutions.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
10Exact matchCourbevoie, QC, FranceHQ recorded Nov 2, 2026501-1,000233 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
11Exact matchBusto Arsizio, ItalyHQ recorded Nov 2, 2026201-500217 contacts →

Exact match

“At TMC Transformers SpA, we blend tradition with innovation to produce highly engineered Dry Type Transformers in Cast Resin or VPI technology.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
12Exact matchMontgomery, AL, United StatesHQ recorded Nov 2, 2026201-500212 contacts →

Exact match

“HD Hyundai Power Transformers USA, Inc, a subsidiary of HD Hyundai Electric Systems, stands as a premier transformer manufacturer located in Montgomery, Alabama.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
13Exact matchHamburg, GermanyHQ recorded Nov 2, 2026501-1,000167 contacts →

Exact match

“RITZ is one of the world´s leading specialists for Instrument Transformers, Cast Resin Applications and Cast Resin Insulated Busbar Systems.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
14Exact matchBogota, ColombiaHQ recorded Nov 2, 2026201-500161 contacts →

Exact match

“FYR INGENIEROS es una empresa dedicada a la Fabricación de Transformadores Tipo Secos clase H, contamos con Laboratorios de Análisis de Aceites Dieléctricos, y de Ensayos…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
15Exact matchLake Mary, FL, United StatesHQ recorded Nov 2, 2026201-500154 contacts →

Exact match

“At JST Power Equipment, we pride ourselves on delivering world-class transformer and electrical equipment solutions.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
16Exact matchItu, BrazilHQ recorded Nov 2, 2026201-500153 contacts →

Exact match

“ISOLET is a company based out of Rod.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
17Exact matchMumbai, IndiaHQ recorded Nov 2, 2026201-500150 contacts →

Exact match

“manufacturers and exporters of POWER AND EHV TRANSFORMERS”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
18Exact matchIstanbul, TürkiyeHQ recorded Nov 2, 2026501-1,000146 contacts →

Exact match

“ALCE Elektrik is a global provider in energy sector with solutions for measurement and insulation devices.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
19Exact matchChakan, IndiaHQ recorded Nov 2, 2026201-500141 contacts →

Exact match

“KSH International Private Limited founded in 1981, is a leading manufacturer of Bare and Insulated Rectangular & Round Winding wires and Transposed Cables in India.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
20Exact matchVernon, CA, United StatesHQ recorded Nov 2, 2026201-500131 contacts →

Exact match

“MGM Transformers is now part of Forgent Power Solutions.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
21Exact matchAnkara, TürkiyeHQ recorded Nov 2, 2026201-500119 contacts →

Exact match

“EMEK has been manufacturing instrument transformers and disconnecting switches in Turkey since 1969.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
22Exact matchMassaranduba, BrazilHQ recorded Nov 2, 2026201-500112 contacts →

Exact match

“Estamos em transição, siga: Estamos no mercado desde 1996, produzindo com qualidade e confiabilidade transformadores, indutores, filtros e toda uma linha de produtos magnéticos a…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
23Exact matchMarkham, ON, CanadaHQ recorded Nov 2, 202651-200110 contacts →

Exact match

“Our mission at CES Transformers is to provide high-quality, reliable, and innovative transformer solutions that meet the evolving needs of our customers.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
24Exact matchBlomberg, GermanyHQ recorded Nov 2, 2026201-500110 contacts →

Exact match

“The core competence of SynFlex lies in the development, manufacturing and distribution of conducting and insulating products for the electrical insulation systems of electrical…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
25Exact matchAnkara, TürkiyeHQ recorded Nov 2, 2026201-500110 contacts →

Exact match

“Sem Transformator started activities and manufacturing transformers in 1980.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase

Showing 25 of 1,374 transformer insulation suppliers worldwide

See the full list, filter by size, metro and specialty, and access 3,732 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Transformer insulation suppliers worldwide at a glance

As of Nov 2, 2026
18.4%Verified-email coverage
14.8Average contacts per company
11-50Median size (employees)
2.3%Largest-city concentration · Vadodara
Nov 2, 2026Page data refreshed

Companies by employee count

1-10
344
11-50
440
51-200
367
201-500
128
501-1,000
39
1,001-5,000
28
5,001-10,000
2
10001+
2

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for transformer insulation suppliers are linked below.
What qualifies
Company records worldwide whose business descriptions match “transformer insulation suppliers” 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. 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 3,732 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 November 2, 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.

Transformer insulation suppliers by location

8 lists · largest first

Every Transformer insulation suppliers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “transformer insulation suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many transformer insulation suppliers are there worldwide?

RevenueBase identified 1,374 company matches for transformer insulation suppliers worldwide as of November 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?

Vijai Electricals Limited, Hyderabad tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most transformer insulation suppliers?

India leads with 423 companies, followed by the United States (97) and Brazil (57). Every transformer insulation suppliers list by country and city is linked on this page.

Which city has the most transformer insulation suppliers?

Vadodara leads with 32 company records, followed by Bangalore (30) and Delhi (23).

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 3,732 professional contacts with verified work emails tracked across these 1,374 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 November 2, 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.