Custom Transformers, Current Transformers, Power Transformers, Small Transformers, Toroidal Transformers, Electrical Inductors, Electrical Reactors, Military Grade Transformers, Chokes, Custom Electromagnetics, Bobbin Windings, Copper Windings, Build to Print, Reverse Engineering, Obsolete Transformers, Contract Manufacturing.

Dufrane has the right team, knowledge, experience, and technology to produce a wide range of custom electromagnetic solutions for all of your high integrity and high performance electrical conditioning requirements.

Custom Transformer Products:

Custom dry Transformers of all types including Toroidal Transformers, Inductors, Reactors, 3-Phase Transformers, Current Transformers, Power Transformers, Chokes, Bobbin Windings, Custom Windings/Custom Coils, Military Grade Transformers — from small transformers at only 10mW up to 3-phase transformers up to over 100KVA.

Custom Transformer and Winding Capabilities:

Our Specialty is meeting your special requirements.  Custom Transformers of all types – up to 100KVA – can be supplied “Build to Print”, designed in house, produced via contract manufacturing, and even reverse-engineered to solve difficult obsolete custom transformer problems.  Our unique casting and molding capabilities allow us to meet stringent environmental (Temp, Humidity, Vibration, Shock, etc.) requirements.  We offer competitive prototype custom transformers (no minimums) and with our in house machining capabilities we can supply limitless choices for mounting, cabling and termination on all Dufrane custom electromagnetics.

Custom Transformer Applications:

Dufrane Custom Transformers, Toroidal Transformers, Small Transformers, and custom electromagnetic solutions can be found in such applications and industries as military/defense transformers, Defense Industry, Rail, Electric Utility, Marine and Medical industries.

Custom Machining:

Did you know that Dufrane now has full in-house machining capabilities?  With a number of high end milling machines and CNC lathes we can accommodate most of your machining needs, whether or not you need our advanced electromagnetics!

This expanded capability also enables us to add value to our custom electromagnetic solutions – not only providing you with the highest quality windings and custom transformers to solve your power system challenges, but also providing you with a more complete product.  Our machining capabilities have expanded to include a number of state of the art multi-axis milling machines, and we now offer the ability to be a stand-alone resource for precision machined parts.  Contact us with your machined parts requirements!

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Dufrane Family

Dufrane Inc.

Dufrane was established in 1985 by Ken Dufrane as “Dufrane and Associates”. Teamed with Lou DeRitis, the company grew and was re-branded to Dufrane Nuclear Shielding, Inc. In the mid-2000s, DNSI was purchased by Josh Brooks. Josh worked side-by-side with Lou learning the craft of nuclear shielding, until Lou’s passing in recent years. Josh recognized the need to expand the DNSI offerings to the nuclear industry and began assembling a team of people with very diverse and extensive nuclear careers. In addition to shielding, the DNSI Value Engineering Team is skilled in cask transport, remote waste handling, waste packaging, rigging, large components and D&D. See “Value Engineering Team” on the Services Tab for more information.

DNSI is headquartered in Winsted, CT.

Dufrane Construction

In 2014, Josh Brooks purchased Quail Nuclear, Inc. and re-branded it to Dufrane Construction. Dufrane Construction is a primary supplier for construction services to URENCO USA, the United States’ newest uranium enrichment facility, located in Eunice, NM. Dufrane Construction headquarters are strategically-located in Andrews, TX, and maintains a satellite office onsite at URENCO. The strategic location allows Dufrane Construction to service, Waste Control Specialists LLC (WCS), the Nation’s first Class B and Class C radioactive waste disposal site to open in over 30 years, URENCO, the Waste Isolation Pilot Plant (WIPP) site and other entities in the New Mexico Energy Plex. Dufrane Construction has also expanded its services into the West Texas oil and gas industry.

Dufrane Construction is headquartered in Andrews, TX.

Dufrane Rail Services LLC was formed in the fourth quarter of 2016 as a woman-owned, small business by Shelly Brooks. DRS LLC performs railroad track maintenance nationwide.

Dufrane Rail Services LLC is headquartered in Andrews, TX

Foreign Ownership Control or Influence (FOCI)

The Dufrane companies are not owned, controlled or influenced by any foreign interests. If necessary, a FOCI determination will be obtained and supplied. The Dufrane group of companies operate in compliance with 10 CFR Part 810, 10 CFR Part 110, 15 CFR Part 730 and 22 CFR Part 120 governing nuclear information export to foreign countries.