Custom Transformers

designed to meet customer specifications. Built to exceed customer expectations.

Our transformers are designed to your project requirements, then manufactured and tested in accordance with ANSI and IEEE standards. We carry NRTL to UL certifications and our custom transformers can be marked with CSA or CE Mark.

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Capabilities & Options

Our custom transformers can be designed to meet a broad range of electrical requirements and include a wide range of options. Whether world-wide voltage inputs, circuit protection devices, low inrush or noise attenuation is required, QT&E engineers and sales staff can work with you to establish a specification and design that includes and meets all your design requirements.

Prototype to Production Run

Custom transformers designed to your requirements, then built, tested and shipped with industry leading turn-around times.

Prototype your custom transformer

We can work with your engineers to develop prototype parts or specialized “one-off” units. Our custom transformers can be ordered as single orders or in small batch quantities for low production run components.


Production-run custom transformers, designed to meet price-points and lead-times

With over 65,000 sqft. of manufacturing space, and multiple ISO registered production facilities, we are easily able to accommodate production-level demand and meet customer lead-times.


Years of combined staff transformer design experience


Years of transformer manufacturing experience


Transformer, inductor/reactor and assembly designs

Designing for your Environment

Our custom transformers can be designed to meet numerous weather and environmental conditions. We have designed and manufactured units to operate under abrasive environments in innovative ways, including numerous types of NEMA and IP-rated enclosures, cast coils, and more. We have custom transformers that have been in operation for over 30+ years in semi-exposed environments and that continue to perform to design specifications. Conditions to consider when developing project specifications include:

  • Wind iconWind
  • Snow iconSnow
  • Heat/cold iconHeat and Cold
  • Salt iconSalt
  • Rain iconRain
  • Sand iconSand and conductive sand
  • Chemicals iconCaustic chemicals
  • Elevation iconHigh elevations
  • Down-hole iconDown-hole environments
  • Marine iconMarine and seaboard units