Indoor High Voltage Sulfur Hexafluoride Load Switch
The FLN36-12 Indoor High-Voltage AC SF6 Load Break Switch is a compact, gas-insulated switching device designed for 12kV/50Hz three-phase power systems. Widely used in ring main units (RMUs), compact substations, and distribution networks, it performs core functions of load current switching, circuit isolation, and earthing, serving as a key component for power distribution control and protection.
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SF6 Gas Insulation & Arc Extinguishing
- Utilizes SF6 gas as both insulating and arc-extinguishing medium, ensuring reliable arc quenching and stable performance under various load conditions.
- Fully sealed epoxy resin housing prevents gas leakage and internal condensation, enabling maintenance-free long-term operation.
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Three-Station Design (Close/Open/Ground)
- Integrates closing, opening, and earthing functions in one unit, meeting the "five-prevention" safety requirements.
- Built-in mechanical interlocks prevent misoperations such as earthing with load or closing with earthing.
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High Reliability & Durability
- Rated for 10,000+ mechanical operation cycles, with strong resistance to environmental factors like humidity and dust.
- Compact, modular design saves cabinet space and simplifies installation in ring main units.
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Flexible Application Options
- Available in standard load switch (FLN36-12) and fuse-combination (FLRN36-12) versions, the latter providing overcurrent protection for distribution transformers.
- Supports both manual and motorized operation mechanisms for diverse control needs.
Use conditions
Ambient air temperature: -35℃~+40℃
Altitude: ≤1000m
Relative humidity: daily average of not more than 95%; the monthly average of not more than 90%
The ambient air does not contain corrosive gases, combustible gases or vapors.
There is no frequent vibration.
Ideal for use in:
- Urban and rural distribution ring main units
- Residential and commercial building power distribution
- Industrial plant and mining power systems
- Prefabricated compact substations
- Secondary distribution network automation projects
D630-20-02 Load Switch
This indoor medium-voltage load isolation switch is a core matching accessory for gas-insulated ring main unit (RMU) and switchgear cabinets. It integrates load current breaking, isolation voltage and reliable safety interlock functions, effectively isolating high-voltage circuits to guarantee ...
