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GPO3 UPGM203 rigid insulating material sheets rust brown, cream white, and bright red, UPGM 203 identification mark
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  • GPO3 UPGM203 rigid insulating material sheets rust brown, cream white, and bright red, UPGM 203 identification mark
  • GPO3 UPGM203 insulating sheets in dark red, bright red, and white color
  • Red GPO3 UPGM203 rigid insulating plates fiberglass mat
  • Red GPO3 UPGM203 L-shaped insulating components
  • Red GPO3 UPGM203 insulating support blocks featuring precision-cut circular openings
  • GPO3 UPGM203 insulating brackets L-shaped
  • Diagonal corner view of GPO3 UPGM203 rigid insulating sheets in red, white, and brown
  • Top-down angled overview of GPO3 UPGM203 insulating boards in brown, cream, and red color
GPO3 UPGM203

GPO3 UPGM203

UPGM203 (GPO3) is a rigid insulating material manufactured from alkali-free fiberglass mat impregnated with unsaturated polyester resin. By adding relevant chemical agents during the heating and pressing process, this material achieves exceptional performance for demanding environments.

Key Characteristics

  • Maintains good electrical properties under high humidity conditions.

  • Delivers high mechanical properties under medium temperatures.

  • Features fine flame retardant properties, alongside excellent arc and tracking resistance.

  • Conforms to EN 45545 R22/23 HL3 (approved by a professional European lab) and complies with UL94-V0 applications (certified by UL LAB).

Industrial Applications GPO3 is widely utilized in medium and low voltage electrical industries. Common applications include:

  • Phase and end barriers

  • Insulating supports

  • Bus bar supports

  • Mounting panels in switch-gears and other electrical apparatus

Special Types Available

  • UPGM203 Cold Punching Plate: Reinforced with a special glass mat to ensure superior punching and shearing properties without generating burrs. Fully meets the UL94-V0 flame retardant rating.

  • UPGM203JST: A specialized fiber-reinforced thermosetting material offering outstanding fire resistance (flammability FV0 ≥ 0.6mm). Known for its low toxicity and low smoke density, making it a premium specialty product.

Basic Specifications

  • Thickness Range: 0.8mm - 50mm

  • Standard Sizes: 1010 x 2020mm, 1250 x 2500mm

  • Available Colors: Red, White, Brown, etc.
CNC Machining & Customization Capabilities
  • Custom Machining Scope: Custom cut-to-size panels and CNC components based on drawings (PDF, DWG, STEP).
  • Max Equipment Processing Area: Up to 2500mm × 2500mm (facility equipment limit).
  • Machining Thickness: Machinable thickness strictly per raw material stock limits or custom stacked/molded specs.
  • Machining Accuracy: Standard tolerance ±0.1mm; Precision tolerance up to ±0.02mm.
Quality Certificates & Compliance
  • ISO 9001 Certification: Certificate No. 04425Q10157R2S (Valid to Feb 17, 2028)
  • UL Recognition: UL File No. E538818
Ordering & Logistics Information
  • Minimum Order Quantity (MOQ):
    • Sheets & Rods: 500 kg
    • Tubes: 100 kg
    • CNC Machined Parts: 100 pcs
  • Lead Time: Quoted individually per project specifications and order volume.
  • Samples: Material samples are available upon request for testing and evaluation.

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Frequently asked questions
Which international standards does your material comply with?

Our materials comply with IEC, NEMA, DIN, ASTM, and UL standards. We provide direct equivalents to NEMA grades (e.g., G10, FR4, G11, G7, GPO-3) and IEC EPGC series.
Do you provide custom CNC machining services based on drawings?

Yes. Operating over 100 CNC machining centers, we manufacture custom-shaped parts from your drawings (PDF, DWG, STEP) with machining accuracy up to ±0.05mm.
Under which quality management system do you operate?

Production runs under an ISO 9001 compliant quality system. In-house test reports for electrical, mechanical, and thermal properties as well as CoC certificates are available upon request.
What is your Minimum Order Quantity (MOQ) and lead time?

Our products are manufactured at our Beijing production facility. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.
How much does shipping cost?

Shipping is calculated based on your location and the items in your order. You will always know the shipping price before you purchase.

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