Why Our SF6 Load Break Switches are the Gold Standard
for Modern Power Distribution
In the demanding landscape of medium-voltage power distribution, reliability isn't just a goal-it's a requirement. Whether you are building a Ring Main Unit (RMU) or managing an industrial substation, the heart of your system depends on the switching equipment you choose.
Our SF6 Load Break Switch (LBS) series is engineered to provide superior arc-extinguishing performance, uncompromising safety, and a maintenance-free lifecycle.
1. The Power of SF6 Technology: Precision Arc Quenching
Our switches utilize Sulfur Hexafluoride (SF6) gas to ensure rapid arc extinction and consistent insulation, even in high-stress switching cycles.
Insulation Levels: Achieve 42kV (Power Frequency) and 75kV (Lightning Impulse) between phases and to earth.
Gas Pressure Monitoring: Equipped with an integrated pressure gauge maintaining 0.04 MPa (relative), ensuring the dielectric strength is always at peak levels.
Standard Compliance: Fully compliant with IEC 62271-103 for load break switches.
| Parameter | Specifications (FLN36-12) |
|---|---|
| Rated Voltage | 12 kV / 24 kV/40.5kV |
| Rated Current | 630 A |
| Rated Frequency | 50 / 60 Hz |
| P.F. Withstand Voltage | 42 kV |
| Lightning Impulse (BIL) | 75 kV |
| Short-Circuit Making (Peak) | 50 / 62.5 kA |
| Short-Time Withstand (4s) | 20 kA |
2. Design Excellence: Built for Industrial Endurance
We focus on a "Sealed-for-Life" design that eliminates the need for internal maintenance over a 30-year expected lifespan.
Mechanical Life: Rated for 3,000 to 5,000 operations, significantly exceeding standard industry requirements.
Rated Current: Handles a continuous 630A load with ease, providing headroom for industrial fluctuations.
Phase Spacing: Standard 210mm spacing (customizable) to fit various cabinet configurations perfectly.
3. Safety First: High Breaking & Making Capacities
Grid safety depends on how a switch handles faults. Our series is tested to withstand the most rigorous electrical events:
Short-Circuit Making Capacity (Peak): Capable of handling 50kA / 62.5kA to ensure safety during accidental closures.
Short-Time Withstand Current: Withstands 20kA for 3s / 4s, providing the necessary time for protection relays to coordinate.
Integrated Grounding: The built-in grounding switch features the same short-circuit making capacity, ensuring operator safety during maintenance.
Why Partner With Us?
Beyond the hardware, we provide the expertise. With years of experience in high-voltage engineering, we understand the standards (IEC/ANSI) and the challenges of the field. When you choose our SF6 Load Break Switch, you are choosing a partner dedicated to your grid's uptime.
