Company lists · Data refreshed November 2026

Top 25 Custom power assembly suppliers based in the United States

RevenueBase identified 600 company matches for custom power assembly suppliers associated with the United States as of November 2026 and tracks 18,963 professional contacts across them, including 5,412 with verified work emails. Houston is the largest hub.

This list covers company matches for custom power assembly suppliers associated with the United States, 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 5, 2026.

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 5, 2026 How this list was built
600Companies
18,963Contacts tracked
5,412Verified emails
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The 25 largest custom power assembly suppliers based in the United States

Ranked by team size
Top 25 of 600 company matches for custom power assembly suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchSouthfield, MI, United StatesHQ recorded Nov 5, 202610001+2,316 contacts →

Exact match

“Founded in 1953, Electrical Components International (ECI) is one of the world’s leading suppliers of electrical distribution systems, control box assemblies, and other critical…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchSchaumburg, TX, United StatesHQ recorded Nov 5, 2026501-1,000985 contacts →

Exact match

“Rittal LLC is the U.S.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchLafayette, IN, United StatesHQ recorded Nov 5, 20261,001-5,000745 contacts →

Exact match

“Kirby Risk Corporation is a multi-faceted company, dedicated to understanding and meeting our business partners' needs with innovative, effective solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchNorwell, CA, United StatesHQ recorded Nov 5, 2026201-500437 contacts →

Exact match

“Sager Electronics, a wholly owned subsidiary of TTI Inc, is a North American distributor of Interconnect, Power, and Electromechanical products and custom solutions provider.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchWestfield, NY, United StatesHQ recorded Nov 5, 2026501-1,000315 contacts →

Exact match

“We Make Powerful Connections.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchHackettstown, NJ, United StatesHQ recorded Nov 5, 2026501-1,000301 contacts →

Exact match

“Astrodyne TDI is a custom designer and manufacturer of innovative power solutions for demanding applications worldwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchMckinney, AZ, United StatesHQ recorded Nov 5, 2026201-500264 contacts →

Exact match

“At Maverick Power, we are revolutionizing power solutions for businesses with a strong commitment to innovation, efficiency, and reliability.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchMount Pleasant, PA, United StatesHQ recorded Nov 5, 2026201-500251 contacts →

Exact match

“Full-service manufacturer.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchBinghamton, NY, United StatesHQ recorded Nov 5, 2026201-500250 contacts →

Exact match

“i3 Assembly LLC is dedicated to advancing our competitive excellence from development through full-scale production manufacturing.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchBuffalo, AZ, United StatesHQ recorded Nov 5, 2026501-1,000237 contacts →

Exact match

“GTI is a U.S-based, full-service contract manufacturer that brings products to life for the world's leading innovators.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchPrice, IL, United StatesHQ recorded Nov 5, 2026501-1,000224 contacts →

Exact match

“IE provides custom-engineered, packaged equipment to industrial markets.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchMacedonia, OH, United StatesHQ recorded Nov 5, 2026501-1,000222 contacts →

Exact match

“Amphenol TPC Wire & Cable delivers value to its customers by providing innovative and abuse-resistant wire and cable solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchTroy, MI, United StatesHQ recorded Nov 5, 20261,001-5,000222 contacts →

Exact match

“NAI is a global leader in the manufacturing of advanced high-reliability connectivity solutions for mission critical and other high-performance applications.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchMayfield Village, OH, United StatesHQ recorded Nov 5, 20261,001-5,000198 contacts →

Exact match

“Mega Techway was founded in 2004 to specialize in contract manufacturing of custom cable assemblies, wire harnesses, and electromechanical interconnect assemblies to meet a wide…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchBuena Park, CA, United StatesHQ recorded Nov 5, 2026501-1,000193 contacts →

Exact match

“Leach International Corporation designs and manufactures a broad range of high-reliable power switching and control components and equipment for aerospace, ground vehicle, rail…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchWest Jordan, UT, United StatesHQ recorded Nov 5, 2026501-1,000190 contacts →

Exact match

“We’re an innovative company with countless years of combined experience in the industrial electrical industry.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchFranklin Park, IL, United StatesHQ recorded Nov 5, 2026501-1,000175 contacts →

Exact match

“For over 100 years, SAI (Switchboard Apparatus, Inc.) has supplied innovative and reliable equipment for electrical power distribution.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchStoughton, MA, United StatesHQ recorded Nov 5, 2026201-500169 contacts →

Exact match

“Amphenol Alden provides innovative connector products and solutions that deliver outstanding performance and reliability in every application.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchSaginaw, TN, United StatesHQ recorded Nov 5, 2026201-500169 contacts →

Exact match

“Founded in 1963, Saginaw Control & Engineering is a leading manufacturer of electrical enclosures and related products.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchDecatur, TN, United StatesHQ recorded Nov 5, 2026201-500153 contacts →

Exact match

“Storm Power Components is a responsive, right-size US manufacturer of custom copper and aluminum electrical components.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchShelton, CT, United StatesHQ recorded Nov 5, 202651-200145 contacts →

Exact match

“Founded in 1989, Lex Innovations has grown into a leading North American manufacturer of innovative power distribution solutions for demanding markets, including industrial…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchWinneconne, WI, United StatesHQ recorded Nov 5, 2026201-500134 contacts →

Exact match

“At Switchgear Power Systems, we engineer and manufacture high quality, custom electrical power distribution equipment with speed, flexibility, and competitive pricing.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchLos Osos, CA, United StatesHQ recorded Nov 5, 2026201-500134 contacts →

Exact match

“Located on California’s beautiful Central Coast, Rantec Power Systems has been providing power conversion products since 1971.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchCaldwell, ID, United StatesHQ recorded Nov 5, 20261,001-5,000128 contacts →

Exact match

“Mission Critical Group (MCG) stands apart as an end-to-end power systems and solutions provider, accelerating time-to-power in mission critical environments with unmatched speed…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchHanahan, SC, United StatesHQ recorded Nov 5, 202651-200125 contacts →

Exact match

“Founded in 1995, UEC Electronics, LLC (UEC) is an award-winning business.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 600 custom power assembly suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 5,412 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom power assembly suppliers based in the United States at a glance

As of Nov 5, 2026
28.5%Verified-email coverage
31.6Average contacts per company
11-50Median size (employees)
1.8%Largest-city concentration · Houston
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
138
11-50
229
51-200
160
201-500
41
501-1,000
14
1,001-5,000
9
5,001-10,000
2
10001+
4

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 600 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “custom power assembly 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 5,412 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 5, 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.

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

How many custom power assembly suppliers are there based in the United States?

RevenueBase identified 600 company matches for custom power assembly suppliers associated with the United States 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?

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

Which city has the most custom power assembly suppliers?

Houston leads with 11 company records, followed by Fremont (10) and San Jose (8).

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 5,412 professional contacts with verified work emails tracked across these 600 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 5, 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.