Armatherm® API (Armoured Polyesterimide) Enamelled Copper Conductor with Glass Overcoat

Enamel Type

  • Base coat polyesterimide, top coat polyamide-imide

Glass Covering

  • Electrical Grade Glass Yarn bonded with Class H solvented varnish

Insulation Class

  • 200° C


  • IEC 317 – 13 / 1990


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Product Description

Armatherm API magnet wire is based on polyesterimide enamel with an amide-imide topcoat designed for excellent high temperature performance. It exhibits all of the basic properties required for winding and performance plus added thermal characteristics rendering it suitable for continuous service at 200°C and intermittent cycling up to 220°C. A glass overcoat provides additional mechanical strength coupled with an increased surface area for improved bonding between conductors after impregnation.


  • High thermal stability
  • Good windability
  • Excellent heat shock resistance
  • High thermoplastic flow temperatures
  • Good overload resistance
  • Extremely high dielectric strength, even when exposed to moisture

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DISCLAIMER: The technical information contained herein is the result of extensive testing in the manufacturer’s laboratories. In addition any application advice given verbally, in writing or by testing corresponds to the best of our knowledge and belief. Since the use and application of any of our products lies beyond our area of control, it remains the responsibility of the user to verify the product’s suitability for their application.

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