GW4-110kV disconnector – Robust Outdoor High-Voltage Isolating Switch for Substations

The GW4-110kV disconnector is a double-column, horizontally rotating outdoor high-voltage isolating switch designed for safe and reliable operation in 110kV transmission substations. Featuring a robust mechanical structure with silver-plated copper contacts and anti-corrosion aluminum alloy conductive arms, it ensures low contact resistance, stable current carrying capacity, and long-term durability under harsh environmental conditions.

Engineered for both manual and motorized operation, the GW4 series offers smooth switching performance with minimal maintenance requirements. Its open-frame design provides excellent heat dissipation and visual confirmation of the open/closed state—critical for safety during maintenance and grid isolation procedures. The disconnector complies with IEC 62271-102 and GB/T 1985 standards, supporting rated currents up to 2000A and short-time withstand currents of up to 50kA.

• Double-column 110kV isolator – proven structural stability for high-voltage outdoor applications

• Low-resistance outdoor disconnector – silver-plated contacts ensure efficient power transmission

• Maintenance-friendly high-voltage switch – simple mechanism design reduces lifecycle costs

Ideal for use in conventional and smart substations, the GW4-110kV disconnector integrates seamlessly with circuit breakers and grounding switches for complete system isolation. Its weather-resistant insulators and precision-aligned rotating mechanism guarantee consistent performance across temperature ranges from -40°C to +40°C. With decades of field-proven reliability, this disconnector delivers operational safety, electrical efficiency, and ease of integration—making it a trusted choice for global power infrastructure projects.