About

Isabellenhütte USA, formerly Isotek Corporation, is a wholly owned subsidiary of Isabellenhütte Heusler GmbH KG of Dillenburg, Germany. Formed in 1989, Isabellenhütte USA is a leading supplier of precision current sensing and high power resistors, thermo electric and resistance alloys, and precision measurement systems. Located in Swansea MA, Isabellenhütte USA has developed an industry wide reputation for providing high-quality products and unparalleled customer support.

Backed by hundreds of decades of manufacturing and engineering expertise and a representative network that spans all of North America, Mexico and Brazil our mission is to provide superior resistive solutions into the automotive, industrial and aerospace industries. Isotek strives to remain at the ready with samples of standard products and unmatched application support for technically demanding custom product development. We welcome your questions, appreciate your trust and value your business.

Precision & Power Resistors

We specialize in the manufacturing of precision current sensing and power resistive solutions for the automotive, industrial, clean energy and aerospace markets...

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Resistance & Thermoelectric Alloys

Isotek supplies alloys for the manufacture of all internationally standardized thermcouples...

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Measurement

Under the new trademark ISAscale®, Isabellenhütte markets its new brand of Precision-Measurement-Systems which are distinguished through a high degree of precision and ease of operation. They combine features that are often unique in this combination.

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