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Home/Gas Insulated Switchgear Parts/GIS Circuit Breaker/40.5kV High Voltage Load Break Switch with Earthing For GIS / RMU / Switchgear 40.5kV High Voltage Load Break Switch with Earthing For GIS / RMU / Switchgear
The LYL-40.5 Load Break Switch with Earthing is designed for medium-voltage power distribution systems, suitable for both gas-insulated and air-insulated switchgear.
It provides safe and reliable disconnection and grounding functions under normal operating conditions.
All models comply with GB3804-2004 “3.6–40.5kV AC High-Voltage Load Switches” and GB16926-1997 “High-Voltage AC Load Switch–Fuse Combination Electrical Apparatus” standards.
Electrical ProductsFeatures of GIS Load Break Switch
Integrated earthing switch ensures operational safety and system reliability.
Compact structure for easy integration into GIS and ring main units.
High mechanical endurance suitable for frequent operation.
Low maintenance design, reducing long-term operation costs.
Compliant with relevant GB standards, ensuring interchangeability and compatibility with major switchgear types.
Applications
Medium-voltage switchgear
Ring main units (RMU)
Substations and distribution networks
Industrial and infrastructure power systems
Technical Parameters of GIS Load Break Switch
| Item | Data |
|---|---|
| Rated voltage | 40.5 kV |
| Rated current | 630 A |
| Rated short-time withstand current (main circuit) | 20 kA / 4s; 25 kA / 3s |
| Mechanical life (main circuit) | 5000 operations |
| Rated short-time withstand current (earthing circuit) | 20 kA / 2s |
| Mechanical life (earthing circuit) | 2000 operations |
| Rated frequency | 50 Hz |
| Poles | 3 |
| Installation type | Indoor / GIS or RMU |
Reference for the load break switch dimensions
Ordering Information
When placing an order, please specify:
Rated voltage and current
Operation mode (manual or motorized)
Installation type and connection requirements
Any special technical or mounting requirements
For detailed drawings, datasheets, or quotations, please contact our sales team.
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