GPO-3 material, widely recognized as UPGM-203, is a high-performance unsaturated polyester glass fiber mat laminate. Typically available in vibrant red, white, or reddish-brown, this material has become a cornerstone in the mechanical and electrical industries.
But what makes GPO-3 the preferred choice for modern power systems? Let's dive into its outstanding characteristics and applications.
6 Key Advantages of GPO-3 Insulating Material
1. Superior Flame Retardancy
Safety is paramount in electrical design. GPO-3 is halogen-free, meaning it provides strong flame retardancy without releasing toxic gases in the event of a fire.
2. High-Temperature Stability
With a UL temperature rating ranging from 120-210°C for electronics and up to 210°C for mechanical applications, GPO-3 ensures exceptional stability under extreme thermal stress.
3. Excellent Mechanical Properties
Composed of high-strength glass fibers, GPO-3 sheets are resistant to cracking and offer surprising flexibility, capable of being bent to a diameter of 19mm.
4. Top-Tier Electrical Insulation
Known for its superior arc resistance and tracking resistance, it provides reliable insulation in high-demand environments.
5. Easy Fabrication & Formability
Manufacturers prefer GPO-3 because it is simple to process. It supports various machining methods, including:
- Punching and Drilling
- Machining and Shearing
- Sanding
6. Cost-Effectiveness
Compared to other high-performance laminates, GPO-3 is relatively low-cost and easy to store at room temperature, making it a budget-friendly yet high-quality option.
Common Applications in the Power Industry
The demand for GPO-3 machined parts is surging in low-voltage electrical equipment and the automotive sector.
- Circuit Breakers: Used for safety barriers, protective covers, phase barriers, and arc chute plates in both frame and molded case circuit breakers.
- Electric Motors: Essential for armature components, stator slot wedges, brush holders, and shims.
- Switchgear: Ideal for front, rear, and phase barriers within partition systems.
- Other Components: Widely used in transformers, AC contactors, and explosion-proof electrical devices.
Conclusion
As the power industry moves towards materials that offer higher dimensional stability and non-corrosive properties, GPO-3 (UPGM-203) stands out as a reliable and economical choice.
Would you like a custom quote for GPO-3 sheets or CNC machined parts? Contact our engineering team at RDS Composite today!