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Custom Designed Toroidal Isolation Transformers
For Industrial, Commercial and Medical Applications

You will benefit from our competitive prices also in small quantities as our toroidal isolation transformers do not require tooling for custom designed cores like the conventional stacked lamination E/I core transformers. There is no engineering fee besides a nominal cost of your first prototypes.

Our custom designed single-phase toroidal transformers are available up to 40,000VA.  As toroidal three-phase transformers use one core per phase, we can help you with three phase applications up to 120,000VA. All transformers carry the CE mark. We can also design and build O-Core toroidal power transformers up to 2,000VA single phase and 6,000VA three-phase.

Safety Standards:
Our isolation transformers for industrial/commercial applications are certified to Safety Standard Certifications: UL506, CSA C22.2 No.66-1988, EN 61558-1, IEC61558-1, IEC742 and come with CE marking. Intertek File:  3051384

Custom designed  transformers for medical applications comply with medical safety standards UL60601-1, CSA C22.2,
No. 601.1-M90, EN61558-2, EN60601, IEC61558-2, IEC60601.1. Intertek File:  3051384

For size and weight reference information, please see the chart of our standard design isolation transformers or call our factory or e-mail your request for our prompt attention.

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Toroidal Isolation Transformer Design Options

  • auto-resettable or non-resettable thermal protection
  • electrostatic shield
  • a magnetic shield

Please see our Design Guide for more information and design tips.


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