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G11 Epoxy Laminates for High-Voltage Switchgear 

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G11 Epoxy Laminates for High-Voltage Switchgear 

Time: 01-05 2026    Auther: Xujue Electrical

G11 Epoxy Laminates for High-Voltage Switchgear Looking for high-performance insulation materials for your high-volt...

G11 Epoxy Laminates for High-Voltage Switchgear

Looking for high-performance insulation materials for your high-voltage switchgear? G11 epoxy laminates provide unmatched mechanical strength, thermal stability, and electrical insulation, making them the ideal choice for modern switchgear applications worldwide.

g11 epoxy sheet for High-Voltage Switchgear

Why Choose G11 Epoxy Laminates?

G11 epoxy laminates are made from alkali-free glass fiber reinforced with high-temperature epoxy resin, offering H-class thermal resistance up to 180°C. Compared with conventional materials like G10 or GPO-3, G11 delivers superior high-temperature performance, mechanical durability, and long-term reliability for critical switchgear components.

Key Applications in High-Voltage Switchgear

Busbar Supports & Insulating Partitions
Maintain phase separation and structural integrity under high electrical and mechanical stress.
Circuit Breaker and Operating Mechanism Components
Ensure dimensional stability and safe operation even with frequent switching cycles.
High-Temperature & Harsh Environment Areas
Ideal for industrial plants, coastal, and tropical regions, resisting humidity, heat, and aging.
Custom High-Voltage Components
Perfect for 10kV, 11kV, 24kV, 33kV, and 35kV switchgear, providing reliable insulation where it matters most.

Advantages of G11 for Switchgear Manufacturers

High Thermal Resistance (H-Class 180°C) – handles high-current and heavy-load conditions
Exceptional Mechanical Strength – resistant to bending, impact, and long-term deformation
Superior Electrical Insulation – high dielectric strength, low leakage risk
Easy Machinability – CNC compatible for complex components
Long-Term Reliability – ideal for premium switchgear requiring consistent performance

Material Comparison

Material Thermal Class Recommended Use
G10 F (130-155°C) Standard medium-voltage switchgear
G11 H (180°C) High-voltage / high-temperature / high-current switchgear
GPO-3 F (155°C) Low-voltage or structural parts

Conclusion:

For switchgear manufacturers and electrical engineers seeking reliable, high-performance insulation materials, G11 epoxy laminates are the go-to solution. From busbar supports to circuit breaker components, G11 ensures safety, durability, and excellent electrical performance in demanding environments.Optimize your high-voltage switchgear with G11 – the trusted choice for global electrical solutions.

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