Electrical Insulating PET: UL Grades for Motors and Coils USA
In the U.S. electrical and industrial markets, electrical insulating polyester film USA is an essential material for motors, transformers, and coils. Known for its excellent dielectric strength, thermal stability, and mechanical toughness, PET insulation films provide reliable protection for electrical components operating under demanding conditions.
At Pilcher Hamilton Corporation, headquartered in Greer, SC, we supply and convert UL-approved electrical insulating PET films for American manufacturers, ensuring compliance with international safety standards while supporting U.S. industry requirements.
Why Use Electrical Insulating Polyester Film?
Polyester insulation films offer a balance of thermal, mechanical, and electrical properties that make them ideal for electrical engineering. In the U.S., these films are widely chosen over alternatives such as paper or PVC because they combine high dielectric strength with chemical resistance.
UL Grades and U.S. Compliance
The UL (Underwriters Laboratories) certification is critical for electrical insulating materials used in motors and coils across the USA.
UL Recognized Grades of PET Films:
- Class B (130°C): Suitable for general motor windings, transformers, and coils.
- Class F (155°C): Used in applications requiring higher thermal resistance, such as industrial motors and power tools.
- Class H (180°C): Specialty polyester films modified or laminated for high-temperature applications in heavy equipment.
UL recognition ensures films meet U.S. safety, performance, and regulatory standards.
Applications in U.S. Electrical Systems
- Motors and Coils: Slot liners, separators, and phase insulation.
- Transformers: Layer insulation and barrier films.
- Cables and Wires: Wraps providing mechanical protection and dielectric integrity.
- Industrial Equipment: Insulation for generators, relays, and solenoids.
Benefits for U.S. Manufacturers
- High Dielectric Strength: Provides excellent insulation against electrical breakdown.
- Thermal Stability: Maintains performance under high operating temperatures.
- Dimensional Stability: Resists shrinkage and distortion during winding.
- Chemical Resistance: Performs well in oils, varnishes, and solvents common in electrical systems.
Technical Specs to Consider
- Thickness range: Typically 50–250 microns depending on insulation class.
- Surface finish: Options include smooth, matte, or treated for adhesion.
- Mechanical toughness: Withstands stress during winding and slot insertion.
- UL compliance: Confirming film grades are recognized for the intended U.S. application.
Why Source from Pilcher Hamilton
For more than a century, Pilcher Hamilton has been a trusted polyester film supplier in the USA. Our electrical insulating PET films offer:
- UL-recognized grades for motors, coils, and transformers
- Custom slitting and roll converting to fit OEM requirements
- Nationwide distribution for consistent supply
- Technical expertise to support electrical manufacturers
👉 Strengthen your motors and coils with certified insulating films. Contact Pilcher Hamilton today to source electrical insulating polyester films in the USA.