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3M™ ThermaVolt AR Electrical Insulation Paper

Data Sheets & Summary Sheets
  • 3M™ ThermaVolt AR Electrical Insulation Paper

    3M™ ThermaVolt AR Electrical Insulation Paper combines the best of two technologies – inorganic and aramid – to offer the excellent thermal conductivity and voltage endurance of inorganic insulation plus the strong mechanical and thermal properties you expect of aramid insulation.

    3M™ ThermaVolt AR (TVAR) Electrical Insulation Paper is a significant advancement in the development of electrical insulation used in electrical equipment, such as dry type transformers and motors. This premium-performance insulation is a cost-effective alternative to higher temperature insulation materials.



    • Toughness: tensile strength and tear resistance, even in single-ply form
    • Dielectric strength
    • Conformability
    • Long-term thermal stability
    • High thermal conductivity
    • Retains electrical strength even at operating temperatures
    • Approved for use in Electrical Insulation Systems rated through Class 220°C per UL 1446

    Typical Applications: 

    • Core wrap
    • Turn insulation
    • Interwinding insulation
    • Layer insulation
    • Outer wrap insulation
    • Window insulation