Solid-Insulated Switchgear (SIS) is an advanced medium-voltage (MV) power distribution solution that utilizes solid dielectric materials for insulation instead of SF₆ gas or air. Designed for 3.6 kV to 40.5 kV systems, SIS combines the compactness of GIS with the environmental safety of dry insulation, making it ideal for modern, sustainable electrical networks.
✔ Eco-Friendly – Eliminates SF₆ gas, reducing greenhouse gas emissions and regulatory concerns.
✔ Compact & Lightweight – 30-50% smaller than AIS, suitable for space-constrained installations.
✔ Maintenance-Free – Hermetically sealed with solid insulation, resistant to humidity, dust, and corrosion.
✔ Enhanced Safety – No risk of gas leaks, with superior arc-flash protection.
✔ Smart Grid Ready – Compatible with IoT sensors for real-time monitoring and predictive maintenance.
Urban power distribution (underground networks, buildings)
Renewable energy plants (solar/wind grid connections)
Industrial facilities (mining, manufacturing, data centers)
Transportation infrastructure (metro systems, EV charging stations)
Split-Type Circuit Breaker Solid-Insulated RMU Core unit SF6 Free
JG71F-12/125 Split-Type Switch-Fuse Combinations Solid-Insulated RMU Core
Under isolating circuit breaker for SF6 Free switchgear 12kV
Circuit breaker with upper isolation Eco-Friendly SF₆-Free Switchgear
Solid Insulated switchgear Ring Main Unit (RMU) Core unit
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