The semi-insulated ring main unit is a compact, modular medium-voltage switchgear designed for secondary power distribution networks. Its core switching components are hermetically sealed in a stainless steel tank filled with SF6 or eco-friendly gas, providing reliable insulation and arc-quenching, while the busbars and cable connections operate in air.

• Urban and rural power distribution networks
• Industrial and commercial power supply systems
• Power substations and distribution stations
• Renewable energy integration (solar, wind)

• Reliable Operation: Sealed switch module protected from dust, moisture, and corrosion.
• Compact & Modular: Space-saving design with standardized modules for flexible configuration.
• Enhanced Safety: Integrated mechanical and electrical interlocks with pressure relief channels.
• Long Service Life: High-quality components with minimal maintenance requirements.
• Easy Installation: Simplified on-site busbar splicing and bolted cable connections.