Company lists · Data refreshed November 2026

Top 25 Telecommunications line isolation transformers suppliers worldwide

RevenueBase identified 302 company matches for telecommunications line isolation transformers suppliers worldwide as of November 2026 and tracks 7,125 professional contacts across them, including 1,559 with verified work emails. India is the largest market and Bangalore the largest hub.

This list covers company matches for telecommunications line isolation transformers 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 telecommunications line isolation transformers 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
302Companies
7,125Contacts tracked
1,559Verified emails
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The 25 largest telecommunications line isolation transformers suppliers worldwide

Ranked by team size
Top 25 of 302 company matches for telecommunications line isolation transformers 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, 20265,001-10,000927 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, 20261,001-5,000780 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 matchNijmegen, NetherlandsHQ recorded Nov 2, 2026501-1,000458 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
4Exact matchRegensburg, GermanyHQ recorded Nov 2, 20261,001-5,000314 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
5Exact matchGreer, SC, United StatesHQ recorded Nov 2, 2026201-500306 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
6Exact matchGlen Waverley, AustraliaHQ recorded Nov 2, 2026501-1,000277 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
7Exact matchCastelfidardo, ItalyHQ recorded Nov 2, 2026501-1,000173 contacts →

Exact match

“Semar Srl, with more than 600 employees, is a leading manufacturer of electronic and electromechanical products.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
8Exact matchVadodara, IndiaHQ recorded Nov 2, 2026201-500148 contacts →

Exact match

“Shilchar Technologies Ltd.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
9Exact matchCornelio Procopio, BrazilHQ recorded Nov 2, 2026501-1,000140 contacts →

Exact match

“A COMTRAFO atua desde 1994 produzindo transformadores de distribuição e força para o mercado nacional e internacional.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
10Exact matchIlluppapattu Village, IndiaHQ recorded Nov 2, 2026201-500131 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
11Exact matchCopacabana - Antioquia, United StatesHQ recorded Nov 2, 2026201-50098 contacts →

Exact match

“Rymel is a construction company based out of Copacabana - Antioquia, Colombia.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
12Exact matchAnkara, TürkiyeHQ recorded Nov 2, 2026201-50096 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
13Exact matchChennai, IndiaHQ recorded Nov 2, 2026201-50090 contacts →

Exact match

“As part of the -built on a legacy since 1946-we combine over seven decades of global experience with cutting edge innovation.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
14Exact matchMarcianise, ItalyHQ recorded Nov 2, 2026201-50079 contacts →

Exact match

“Founded in 1949, the Getra Group is one of Italy's leading manufacturers of electrical transformers.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
15Exact matchGuayaquil, EcuadorHQ recorded Nov 2, 2026201-50062 contacts →

Exact match

“INATRA S.A- Industria Andina de Transformadores Desde el 18 de Julio de 1974, en INATRA hemos desarrollado nuestros transformadores con tecnología propia de punta, contando con…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
16Exact matchLudhiana, IndiaHQ recorded Nov 2, 2026201-50054 contacts →

Exact match

“GTB Transformers (Certified 9001:2015) A leading Transformer Manufacturing and Distribution Company.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
17Exact matchRichmond, IL, United StatesHQ recorded Nov 2, 202651-20052 contacts →

Exact match

“75 Years of Engineering Excellence in the Delivered Worldwide Olsun Electrics is the industry’s most trusted partner for custom dry-type transformers.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
18Exact matchHyderabad, IndiaHQ recorded Nov 2, 2026201-50042 contacts →

Exact match

“ELMAS, your trusted partner in the global transformer industry, delivering excellence for about 3 decades.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
19Exact matchTemple, TX, United StatesHQ recorded Nov 2, 202651-20032 contacts →

Exact match

“Sunbelt Transformer is one of the world’s largest providers of new and reconditioned transformers and electrical equipment for commercial and industrial markets worldwide.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
20Exact matchSterling, IL, United StatesHQ recorded Nov 2, 202651-20031 contacts →

Exact match

“For over 40 years, Micron has been the supplier of choice for original equipment manufacturers and control system builders around the world.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
21Exact matchSeneca, SC, United StatesHQ recorded Nov 2, 202611-5030 contacts →

Exact match

“CORE Transformers is the premier supplier of electrical distribution transformers for the commercial, industrial, renewable, and critical power markets.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
22Exact matchŞanliurfa, TürkiyeHQ recorded Nov 2, 202651-20029 contacts →

Exact match

“The company was founded in Şanlıurfa in 2006, in order to operate in domains of electricity, engineering, consultancy, and commitment.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
23Exact matchMontecchio Maggiore, ItalyHQ recorded Nov 2, 202611-5027 contacts →

Exact match

“Company born in 1969 in a small lab, now is one of the leader company on the market.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
24Exact matchAl Kharj, Saudi ArabiaHQ recorded Nov 2, 202651-20026 contacts →

Exact match

“MAGNETIC CONTROL FACTORY, a joint venture company of Magnetic & Controls Group of Company, Head office in India & Falah Saeed Al-Hajri Group, Saudi Arabia is developing…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
25Exact matchSalisbury, MD, United StatesHQ recorded Nov 2, 202651-20026 contacts →

Exact match

“For over 40 years, Toroid Corporation has been a leading provider of custom-designed toroidal transformers and medical isolation transformers, proudly made in the USA.”

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

Showing 25 of 302 telecommunications line isolation transformers suppliers worldwide

See the full list, filter by size, metro and specialty, and access 1,559 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telecommunications line isolation transformers suppliers worldwide at a glance

As of Nov 2, 2026
21.9%Verified-email coverage
23.6Average contacts per company
11-50Median size (employees)
3.3%Largest-city concentration · Bangalore
Nov 2, 2026Page data refreshed

Companies by employee count

1-10
64
11-50
86
51-200
87
201-500
33
501-1,000
14
1,001-5,000
11
5,001-10,000
1

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 telecommunications line isolation transformers suppliers are linked below.
What qualifies
Company records worldwide whose business descriptions match “telecommunications line isolation transformers 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 1,559 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.

Telecommunications line isolation transformers suppliers by location

2 lists · largest first

Every Telecommunications line isolation transformers 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 “telecommunications line isolation transformers suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecommunications line isolation transformers suppliers are there worldwide?

RevenueBase identified 302 company matches for telecommunications line isolation transformers 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 telecommunications line isolation transformers suppliers?

India leads with 102 companies, followed by the United States (26). Every telecommunications line isolation transformers suppliers list by country and city is linked on this page.

Which city has the most telecommunications line isolation transformers suppliers?

Bangalore leads with 10 company records, followed by Pune (8) and Chennai (6).

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 1,559 professional contacts with verified work emails tracked across these 302 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.