Company lists · Data refreshed September 2026

Top 25 Relay manufacturers worldwide

Name: Relay manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,587 companies tracked

RevenueBase identified 1,587 relay manufacturers worldwide as of September 2026 and tracks 57,946 professional contacts across them, including 7,919 with verified work emails and 0 with mobile numbers. India is the largest market and Pune the largest hub.

This list covers relay manufacturers worldwide, 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 17, 2026. Country and city lists for relay manufacturers follow the table.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

1,587Companies

57,946Contacts tracked

7,919Verified emails

0Mobile numbers

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The 25 largest relay manufacturers worldwide

Ranked by team size

Top 25 of 1,587 relay manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to relay manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Schweitzer Engineering Laboratories SEL	Partial evidence	Pullman, WA, United StatesHQ checked Sep 17, 2026	5,001-10,000	6,489 contacts →
	Partial evidence “SEL is a globally recognized designer and manufacturer of products and solutions that make electric power safer, more reliable, and more economical.” Source: RevenueBase Database · checked Sep 17, 2026
2	C&s Electric LTD	Indirect evidence	New Delhi, IndiaHQ checked Sep 17, 2026	5,001-10,000	2,773 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
3	Würth Elektronik Group	Indirect evidence	Niedernhall, GermanyHQ checked Sep 17, 2026	5,001-10,000	1,257 contacts →
	Indirect evidence “About us The Würth Elektronik group of companies, with headquarters in Niedernhall (Hohenlohe), Germany, has about 7,900 employees worldwide and generated global sales of € 1.24…” Source: RevenueBase Database · checked Sep 17, 2026
4	Bosch Automotive Electronics India Private Limited	Indirect evidence	Bengaluru, IndiaHQ checked Sep 17, 2026	1,001-5,000	883 contacts →
	Indirect evidence “BOSCH AUTOMOTIVE ELECTRONICS INDIA PRIVATE LIMITED is an Electrical and Electronic Manufacturing company located in Service Road, Bengaluru, Karnataka, India.” Source: RevenueBase Database · checked Sep 17, 2026
5	Connectwell Industries	Indirect evidence	Dombivli, IndiaHQ checked Sep 17, 2026	501-1,000	553 contacts →
	Indirect evidence “For more than four decades Connectwell has enabled billions of Electrical Connections for various industries across the globe.” Source: RevenueBase Database · checked Sep 17, 2026
6	Shyam SEL And Power Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 17, 2026	5,001-10,000	406 contacts →
	Indirect evidence “Shyam Sel And Power Limited is an Electrical and Electronic Manufacturing company located in Syed Amir Ali Avenue, Kolkata, West Bengal, India.” Source: RevenueBase Database · checked Sep 17, 2026
7	Ashida Electronics	Indirect evidence	Thane, IndiaHQ checked Sep 17, 2026	501-1,000	357 contacts →
	Indirect evidence “ASHIDA Electronics Pvt Ltd is a leading provider of Protection & Automation solutions in Electrical Transmission & Distribution field.” Source: RevenueBase Database · checked Sep 17, 2026
8	Bajoria Appliances PVT LTD Kutchina	Indirect evidence	Kolkata, IndiaHQ checked Sep 17, 2026	n/a	298 contacts →
	Indirect evidence “Bajoria Appliances Pvt Ltd(Kutchina) is an Electrical and Electronic Manufacturing company located in 3 CHINAR PARK CLUB TOWN, Kolkata, West Bengal, India.” Source: RevenueBase Database · checked Sep 17, 2026
9	Shreem Electric LTD	Partial evidence	Jaysingpur, IndiaHQ checked Sep 17, 2026	201-500	290 contacts →
	Partial evidence “Shreem Electric is a leading manufacturing company a wide range of equipment's like Capacitors, Circuit Breakers, Control & Relay panels, Lightening Arrestors, Switchgears and…” Source: RevenueBase Database · checked Sep 17, 2026
10	Lovato Electric SPA	Indirect evidence	Gorle, NetherlandsHQ checked Sep 17, 2026	501-1,000	272 contacts →
	Indirect evidence “For more than 100 years, LOVATO Electric has been designing and manufacturing low voltage electrical devices for industrial applications.” Source: RevenueBase Database · checked Sep 17, 2026
11	SMC Power Generation Limited	Indirect evidence	New Delhi, IndiaHQ checked Sep 17, 2026	501-1,000	269 contacts →
	Indirect evidence “SMC Power Generation Limited is an Electrical and Electronic Manufacturing company located in Middle Circle, New Delhi, Delhi, India.” Source: RevenueBase Database · checked Sep 17, 2026
12	Finder S.P.A	Partial evidence	Almese, ItalyHQ checked Sep 17, 2026	1,001-5,000	254 contacts →
	Partial evidence “Since 1954 Finder has designed and produced new technologies and innovative components for a vast variety of applications: From relays and timers, to energy saving solutions; and…” Source: RevenueBase Database · checked Sep 17, 2026
13	Microelettrica Scientifica SPA	Partial evidence	Buccinasco, ItalyHQ checked Sep 17, 2026	201-500	243 contacts →
	Partial evidence “With over 70 years of experience, Microelettrica designs, develops and manufactures high‑performance electromechanical and electronic power solutions for the most demanding…” Source: RevenueBase Database · checked Sep 17, 2026
14	Systems Control	Strong evidence	Iron Mountain, MI, United StatesHQ checked Sep 17, 2026	501-1,000	240 contacts →
	Strong evidence “Systems Control, a Hubbell brand, designs and manufactures turnkey control systems and control relays that are involved in the protection and control of transmission and…” Source: RevenueBase Database · checked Sep 17, 2026
15	River Engineering PVT LTD	Indirect evidence	Noida, IndiaHQ checked Sep 17, 2026	201-500	232 contacts →
	Indirect evidence “We are engaged in designing, manufacturing and supplying of top-of-the-line products in the technology arena of electrical, magnetic and electro-mechanical for Mainline Railways…” Source: RevenueBase Database · checked Sep 17, 2026
16	Madhya Pradesh Madhya Kshetra Vidyut Vitran Co., LTD	Indirect evidence	Bhopal, IndiaHQ checked Sep 17, 2026	n/a	205 contacts →
	Indirect evidence “Madhya Pradesh Madhya Kshetra Vidyut Vitran Co, Ltd.” Source: RevenueBase Database · checked Sep 17, 2026
17	Gruner AG	Indirect evidence	Wehingen, GermanyHQ checked Sep 17, 2026	1,001-5,000	172 contacts →
	Indirect evidence “Gruner is innovative.” Source: RevenueBase Database · checked Sep 17, 2026
18	SEMAR	Partial evidence	Castelfidardo, ItalyHQ checked Sep 17, 2026	501-1,000	172 contacts →
	Partial evidence “Semar Srl, with more than 600 employees, is a leading manufacturer of electronic and electromechanical products.” Source: RevenueBase Database · checked Sep 17, 2026
19	Polar Elektric Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 17, 2026	501-1,000	167 contacts →
	Indirect evidence “POLAR ELEKTRIC LIMITED is an electrical/electronic manufacturing company.” Source: RevenueBase Database · checked Sep 17, 2026
20	Esterline Power Systems	Strong evidence	Buena Park, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	154 contacts →
	Strong evidence “Esterline Power Systems (Leach International) designs and manufactures a broad range of high-reliable power switching assemblies, relays, and control components and equipment for…” Source: RevenueBase Database · checked Sep 17, 2026
21	Selcom	Indirect evidence	Castel Maggiore, ItalyHQ checked Sep 17, 2026	1,001-5,000	150 contacts →
	Indirect evidence “Selcom Elettronica S.p.A.” Source: RevenueBase Database · checked Sep 17, 2026
22	Ascent Circuits PVT LTD	Indirect evidence	Hosur, IndiaHQ checked Sep 17, 2026	201-500	143 contacts →
	Indirect evidence “Ascent Circuits Pvt Ltd is an electrical/electronic manufacturing company based out of Plot Sipcot Phase 1, Hosur, Tamil Nadu, India.” Source: RevenueBase Database · checked Sep 17, 2026
23	Vinay Electricals	Indirect evidence	Mumbai, IndiaHQ checked Sep 17, 2026	11-50	135 contacts →
	Indirect evidence “Vinay Electricals is an electrical/electronic manufacturing company based out of 52/53, Mehta Industrial Estate Liberty Garden Road No.” Source: RevenueBase Database · checked Sep 17, 2026
24	Vishwanath Projects LTD	Indirect evidence	Hyderabad, IndiaHQ checked Sep 17, 2026	5,001-10,000	124 contacts →
	Indirect evidence “Vishwanath Projects Ltd is an electrical/electronic manufacturing company based out of Flat No 401, R.K.Vipanchi Estates Hyderguda, Hyderabad, Andhra Pradesh, India.” Source: RevenueBase Database · checked Sep 17, 2026
25	Shyama Power India LTD	Indirect evidence	Gurgaon, IndiaHQ checked Sep 17, 2026	201-500	120 contacts →
	Indirect evidence “Shyama Power India Ltd is an Electrical and Electronic Manufacturing company located in 4th floor, P.” Source: RevenueBase Database · checked Sep 17, 2026

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: relay 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 relay manufacturers.
Partial evidence: Its own public description names part of relay manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name relay 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 25 of 1,587 relay manufacturers worldwide

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Relay manufacturers worldwide at a glance

As of Sep 17, 2026

13.7%Verified-email coverage

36.5Average contacts per company

11-50Median size (employees)

4.7%Largest-city concentration · Pune

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

531

11-50

482

51-200

407

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 relay 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.
Coverage: 8 countries, largest first: India, China, the United States, France, the United Kingdom, Germany, Italy, the Netherlands. Country and city lists for relay manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “relay 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 relay 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 relay manufacturers, and records with no verified work email.
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, 7,919 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 17, 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.

Relay manufacturers by location

8 lists · largest first

Every Relay manufacturers 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 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 relay 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 relay manufacturers are there worldwide?

RevenueBase identified 1,587 relay manufacturers worldwide 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?

Schweitzer Engineering Laboratories SEL, headquartered in Pullman, tops this list with the largest team on record.

Which country has the most relay manufacturers?

India leads with 576 companies, followed by China (290) and the United States (264). Every relay manufacturers list by country and city is linked on this page.

Which city has the most relay manufacturers?

Pune leads with 75 headquartered companies, followed by Mumbai (68) and Bangalore (45).

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 7,919 verified decision-maker contacts tracked across these 1,587 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 17, 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.