12kV Indoor High Voltage Sulfur SF6 Load Switch

The FLN36-12D 12kV SF₆ Load Break Switch is a high-performance medium voltage load break switch designed for safe and reliable switching in 12kV power distribution systems.

As a key component of SF₆ insulated Ring Main Units (RMU) and medium voltage switchgear, the FLN36-12D provides reliable load current switching, isolation, and earthing functions. It is widely used in utility distribution networks, industrial power systems, commercial buildings, renewable energy projects, and compact substations.

Featuring advanced SF₆ gas insulation and arc extinguishing technology, this indoor load break switch delivers excellent dielectric performance, high breaking capability, and long mechanical service life for modern medium voltage applications.

The FLN36-12D adopts sealed SF₆ gas insulation technology to ensure stable electrical performance and safe operation.

Benefits include:

• Excellent insulation performance
• Reliable arc extinguishing capability
• Compact switchgear structure
• Low maintenance requirements
• Long operating lifetime

This 12kV load break switch is specially developed for medium voltage distribution applications with:

• Rated voltage: 12kV
• Rated current: 630A
• Rated frequency: 50Hz
• High short-time withstand capability

It is suitable for integration into:

• 12kV RMU systems
• Gas insulated switchgear (GIS)
• Medium voltage switchgear panels
• Compact substations

The FLN36-12D provides a safe three-position operation:

• ON (Load switch closed)
• OFF (Load switch open)
• Earth (Earthing position)

The mechanical interlocking design prevents incorrect operation and improves personnel safety during maintenance and operation.

With its compact structure and reliable insulation system, the FLN36-12D is an ideal RMU load break switch solution.

It helps manufacturers and system integrators achieve:

• Smaller switchgear dimensions
• Flexible configuration
• Reliable medium voltage switching performance
• Easy integration into RMU assemblies

The FLN36-12D medium voltage load break switch is widely applied in:

Used in 12kV distribution networks for safe switching and isolation.

Provides reliable switching functions for SF₆ insulated RMU systems.

Suitable for factories, industrial parks, and large electrical facilities.

Applied in solar farms, wind power plants, and energy storage systems.

Supports safe medium voltage power distribution for large buildings and infrastructure.

• Professional manufacturer of medium voltage switchgear components
• Suitable for RMU and MV switchgear integration
• Reliable SF₆ insulation and arc extinguishing technology
• High electrical and mechanical performance
• OEM/ODM customization available
• Supports global MV distribution projects

A 12kV SF₆ load break switch is a medium voltage switching device that uses SF₆ gas insulation and arc extinguishing technology to safely switch load currents in 12kV distribution systems.

A load break switch is mainly designed for switching normal load currents and isolation, while a circuit breaker provides protection by interrupting fault currents.

Yes. The FLN36-12D is commonly integrated into SF₆ insulated RMU and medium voltage switchgear systems.

Yes. Changyun supports OEM and customized solutions for RMU manufacturers, panel builders, and electrical equipment suppliers.