Company lists · Data refreshed November 2026

Top 25 Oil filled transformers manufacturers worldwide

RevenueBase identified 4,532 company matches for oil filled transformers manufacturers worldwide as of November 2026 and tracks 125,594 professional contacts across them, including 28,755 with verified work emails. India is the largest market and Bangalore the largest hub.

This list covers company matches for oil filled transformers manufacturers 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 4, 2026. Country and city lists for oil filled transformers manufacturers 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 4, 2026 How this list was built
4,532Companies
125,594Contacts tracked
28,755Verified emails
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The 25 largest oil filled transformers manufacturers worldwide

Ranked by team size
Top 25 of 4,532 company matches for oil filled transformers manufacturers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 4, 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 matchRosemont, IL, United StatesHQ recorded Nov 4, 202610001+4,588 contacts →

Exact match

“Littelfuse, Inc.(NASDAQ: LFUS) is a diversified, industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
2Exact matchNew Delhi, IndiaHQ recorded Nov 4, 20265,001-10,0002,948 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
3Exact matchHouston, IL, United StatesHQ recorded Nov 4, 20261,001-5,0002,666 contacts →

Exact match

“Powell is hiring- Powell is dedicated to improving people’s lives by providing reliable power distribution systems in every market we serve.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
4Exact matchApodaca, LA, MexicoHQ recorded Nov 4, 20265,001-10,0002,033 contacts →

Exact match

“Prolec has more than fifty years of experience in the creation of comprehensive solutions to meet the needs of power generation, transmission, and distribution.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
5Exact matchThane, IndiaHQ recorded Nov 4, 2026501-1,0001,489 contacts →

Exact match

“Every transformation begins with a connection, the kind that turns ideas into impact, energy into progress, & possibilities into reality.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
6Exact matchFremont, BC, United StatesHQ recorded Nov 4, 20261,001-5,0001,317 contacts →

Exact match

“Industrial Electric Mfg.(IEM) is the largest independent full-line manufacturer of electrical distribution equipment and integrated power systems in the U.S.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
7Exact matchThame, United KingdomHQ recorded Nov 4, 20261,001-5,0001,305 contacts →

Exact match

“Lucy Electric is a leader in secondary power distribution solutions with over 100 years’ industry experience.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
8Exact matchDubai, United Arab EmiratesHQ recorded Nov 4, 20261,001-5,0001,220 contacts →

Exact match

“As one of the largest manufacturing businesses in The Emirates, Ducab provides world-class solutions to the global energy sector.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9Exact matchMumbai, IndiaHQ recorded Nov 4, 20261,001-5,0001,200 contacts →

Exact match

“Bharat Bijlee is a public-listed electrical engineering company headquartered in Mumbai, India.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
10Exact matchColumbia, SC, United StatesHQ recorded Nov 4, 20261,001-5,0001,129 contacts →

Exact match

“Hubbell Power Systems (HPS) designs and manufactures a wide variety of electric power transmission, distribution, substation, underground, OEM, and communications products used by…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
11Exact matchMungia, SpainHQ recorded Nov 4, 20261,001-5,0001,119 contacts →

Exact match

“The Arteche Group, with 75 years of experience in the electric power industry, offers high-tech solutions and equipment, with a complete range of instrument transformers…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Nov 4, 20261,001-5,0001,087 contacts →

Exact match

“Dashiell is a leading national provider of technical services to the electric utility, power generation, industrial, renewable and energy industries.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
13Exact matchWarrendale, FL, United StatesHQ recorded Nov 4, 20261,001-5,0001,037 contacts →

Exact match

“Mitsubishi Electric Power Products, Inc.(MEPPI) is a leading U.S.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
14Exact matchAnkara, TürkiyeHQ recorded Nov 4, 20261,001-5,0001,034 contacts →

Exact match

“Astor Enerji is an innovative company leading the electromechanical manufacturing industry sector by manufacturing and selling transformers with its knowledge of nearly 40 years…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
15Exact matchEllisville, MS, United StatesHQ recorded Nov 4, 20261,001-5,0001,023 contacts →

Exact match

“Howard Industries is the leading manufacturer of liquid-filled distribution transformers for the utility and commercial/industrial markets.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16Exact matchFort Mill, SC, United StatesHQ recorded Nov 4, 20261,001-5,000982 contacts →

Exact match

“MacLean Power Systems (MPS), headquartered in Fort Mill, SC, is LEADING THE WAY™ in delivering innovative, reliable, and resilient solutions for the electric utility…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
17Exact matchHyderabad, IndiaHQ recorded Nov 4, 20265,001-10,000952 contacts →

Exact match

“Vijai Electricals Ltd.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
18Exact matchRoanoke, United StatesHQ recorded Nov 4, 20265,001-10,000915 contacts →

Exact match

“Virginia Transformer is an engineering company that manufactures transformers.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
19Exact matchDundalk, United StatesHQ recorded Nov 4, 20261,001-5,000888 contacts →

Exact match

“Anord Mardix, a Flex company, is the global leader in critical power distribution and protection.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20Exact matchBalıkesir, TürkiyeHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
21Exact matchSabhan, KuwaitHQ recorded Nov 4, 20261,001-5,000758 contacts →

Exact match

“Established in 1982 by Sayed Hamid Behbehani & Sons, Kuwait.* First Kuwaiti company to be awarded with ISO 9001 back in 1995 by DNV.* Company certified for ISO/TS 29001:2010…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
22Exact matchBerlin, ON, GermanyHQ recorded Nov 4, 20261,001-5,000752 contacts →

Exact match

“As Trench Group, we are sage and VISIONARY INNOMAKERS leading the sustainable transformation of the electric power industry.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
23Exact matchTomago, AustraliaHQ recorded Nov 4, 2026501-1,000717 contacts →

Exact match

“Ampcontrol is challenging the future by solving the most complex problems in energy.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
24Exact matchGuelph, ON, CanadaHQ recorded Nov 4, 20261,001-5,000684 contacts →

Exact match

“Hammond Power Solutions is a North American leader for the design and manufacture of dry-type standard and custom electrical engineered magnetics, liquid filled and cast resin…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
25Exact matchAhmedabad, IndiaHQ recorded Nov 4, 20261,001-5,000632 contacts →

Exact match

“Transformer & Rectifier (India) Limited (TARIL) is one of India’s leading transformer manufacturers, with over four decades of engineering excellence and a strong global presence.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase

Showing 25 of 4,532 oil filled transformers manufacturers worldwide

See the full list, filter by size, metro and specialty, and access 28,755 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil filled transformers manufacturers worldwide at a glance

As of Nov 4, 2026
22.9%Verified-email coverage
27.7Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · Bangalore
Nov 4, 2026Page data refreshed

Companies by employee count

1-10
1,020
11-50
1,492
51-200
1,130
201-500
460
501-1,000
171
1,001-5,000
142
5,001-10,000
19
10001+
11

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 oil filled transformers manufacturers are linked below.
What qualifies
Company records worldwide whose business descriptions match “oil filled transformers 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. 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 28,755 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 4, 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.

Oil filled transformers manufacturers by location

28 lists · largest first

Every Oil filled transformers manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “oil filled transformers manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil filled transformers manufacturers are there worldwide?

RevenueBase identified 4,532 company matches for oil filled transformers manufacturers 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?

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

Which country has the most oil filled transformers manufacturers?

India leads with 926 companies, followed by the United States (418) and Türkiye (230). Every oil filled transformers manufacturers list by country and city is linked on this page.

Which city has the most oil filled transformers manufacturers?

Bangalore leads with 64 company records, followed by Vadodara (56) and Pune (50).

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 28,755 professional contacts with verified work emails tracked across these 4,532 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 4, 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.