Chave seccionadora de carga SF6 interna FLN36

The FLN36 series indoor SF6 load break switch is a medium voltage gas insulated switch disconnector designed for 12kV, 24kV, and 36kV power distribution systems. Using SF6 gas as both the insulation and arc extinguishing medium, the FLN36 integrates load switching, isolation, and grounding functions in a compact sealed structure. It is widely used in ring main units (RMU), compact substations, cable distribution cabinets, and medium voltage switchgear systems.

Recursos do produto

• Rated voltage: 12kV / 24kV / 36kV / 40.5kV
• Rated current: 630A
• SF6 gas insulated structure
• Three-position operation: ON / OFF / EARTH
• Fully sealed epoxy resin enclosure
• Compact modular design
• Excellent arc extinguishing performance
• Maintenance-free operation
• Manual or motorized mechanism available
• Optional fuse combination type
• High mechanical endurance
• Suitable for indoor medium voltage switchgear

Especificações técnicas

Working Principle

The FLN36 load break switch adopts SF6 gas as both insulating and arc-quenching medium. During switching operations, the contacts open inside the sealed gas chamber, where SF6 gas rapidly cools and extinguishes the arc. The three-position design combines load switching, disconnection, and grounding functions into one compact device, improving operational safety and reducing installation space.

Main Configurations

FLN36 Standard Load Break Switch

• Basic load switching function
• Compact switchgear installation
• Suitable for cable and line switching

FLRN36 Fuse Combination Switch

• Integrated high voltage current limiting fuse
• Transformer protection application
• Enhanced short-circuit protection capability

FLN36 with Earthing Switch

• Integrated grounding function
• Mechanical interlocking system
• Improved maintenance safety

Aplicativos

The FLN36 indoor SF6 load break switch is widely used in:

• Ring Main Units (RMU)
• Compact substations
• Medium voltage switchgear
• Cable branch cabinets
• Industrial power distribution
• Utility substations
• Renewable energy substations
• Commercial building power systems

Product Advantages

Compact Sealed Design

The fully sealed SF6 structure minimizes maintenance and protects internal components from dust, humidity, and pollution.

Reliable Arc Interruption

SF6 gas provides excellent insulation and high arc extinguishing efficiency during load switching operations.

Multifunction Integration

Combines switching, isolation, and grounding functions into a single compact unit.

Long Service Life

Designed for long-term stable operation with low maintenance requirements.

Optional Accessories

• Motor operating mechanism
• Auxiliary contacts
• Fuse trip mechanism
• Remote control system
• Pressure gauge
• SCADA automation interface
• Mechanical interlocking device

Compliance Standards

• IEC 60265
• IEC 62271-103
• GB3804
• IEC 60420

Desenho de contorno

Chave seccionadora de 12kV FLN36

Chave seccionadora de 24kV FLN36

Chave seccionadora de carga FLN36 0,5kV