What’s the difference between GPO-1, GPO-2, and GPO-3?

GPO-1 is a general-purpose fiberglass-reinforced thermoset laminate with basic electrical insulation and mechanical strength, suitable for non-critical applications. GPO-2 offers improved dielectric strength and arc resistance compared to GPO-1, making it ideal for electrical insulation in low- to medium-voltage systems. GPO-3 is the highest-performing grade, featuring flame retardancy (UL 94 V-0), superior arc and track resistance, and excellent mechanical and electrical properties, making it the preferred choice for high-demand applications like switchgear, transformers, and transportation components.