GPO-3 insulation board is a glass mat reinforced polyester laminate, widely recognized for its excellent electrical insulation, flame resistance, and mechanical strength. Manufactured by combining glass fiber mats with unsaturated polyester resin, GPO-3 has become a trusted material in the electrical, industrial, and power distribution sectors.
Key Properties of GPO-3
✅ High Dielectric Strength
GPO-3 offers reliable insulation performance, making it ideal for high-voltage electrical equipment and switchgear panels.
✅ Flame Retardant (UL 94 V-0)
This material meets stringent fire safety standards, protecting electrical systems against potential hazards.
✅ Excellent Mechanical Stability
It withstands impact, pressure, and vibration in demanding industrial environments.
✅ Good Thermal Resistance
Operates safely in continuous temperatures up to 155°C without deformation or loss of performance.
✅ Moisture and Chemical Resistance
Performs reliably even in humid, dusty, or chemically aggressive environments.
GPO-3 sheets and insulation boards are widely used in:
★ Transformers
★ High-voltage switchgear
★ Control cabinets
★ Busbar supports
★ Electrical barrier panels
★ Motor and generator insulation
★ Solar and wind energy equipment
Choosing GPO-3 insulation boards ensures:
✔️ Improved equipment safety
✔️ Long-lasting insulation performance
✔️ Compliance with international standards
✔️ Reduced maintenance and downtime
✔️ Cost-effective and customizable solutions
| Property | GPO-3 | FR-4 | Phenolic Board |
|---|---|---|---|
| Dielectric Strength | ★★★★★ | ★★★★☆ | ★★★☆☆ |
| Flame Resistance (UL 94 V-0) | ✅ | ✅ | ❌ |
| Heat Resistance | Up to 155°C | Up to 130°C | Up to 120°C |
| Mechanical Strength | ★★★★★ | ★★★★☆ | ★★★☆☆ |
Result: GPO-3 offers a better balance of safety, durability, and electrical performance.
At ZTelec, we specialize in producing premium GPO-3 insulation boards with precise dimensions, smooth surfaces, and reliable properties. Available in custom thicknesses and cut sizes, our products serve global electrical manufacturers and energy projects.
Request a quote or sample today!
Q: What is the temperature rating of GPO-3?
A: Continuous operating temperature up to 155°C.
Q: Can GPO-3 be customized in size and thickness?
A: Absolutely — ZTelec offers tailored sizes and thicknesses to fit your project.
For GPO-3 insulation board pricing, datasheets, or custom solutions, feel free to get in touch.
Visit : www.ztelecpro.com
