A.P.I. (Armoured Polyesterimide) 200˚C

  Enamel Two layers: base coat polyesterimide, top coat polyamide-imide
  Insulation Class 200oC
Wires Diameters Covering Standards 0.05 – 5,00 (copper)
grade 1,2 & 3
IEC 317 – 13 / 1990

API Magnet wire is based on polyesterimide-imide resin designed for excellent high temperature performance.

API has all of the basic properties required for winding and performance plus added thermal characteristics rendering it suitable for continuous service up to 200˚C


(a) Thermal stability allows use at 200˚C
(b) Good windability
(c) Good heat shock resistance
(d) High thermoplastic flow temperatures
(e) Good overload resistance
(f) Extremely high dielectric strength, even when exposed to moisture
(g) Susceptible to solvent crazing (will self-heal)

Typical Applications

  • Automotive Alternators
  • Ballasts (mercury)
  • Distribution, and power transformers- class 200˚C
  • Open (fractionally and smaller) motors hermetically and totally enclosed motors hermetically, and integral motors
  • Start windings
  • Generators
  • Solenoid, and brake coils

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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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