GSec & GSec Air

Bridging Tradition and Innovation with SF6 and SF6-Free Technology

High performing medium voltage three-position switch disconnector or disconnector and earthing switch

GSec is a medium voltage indoor sulfur hexafluoride (SF6)-insulated switch disconnector for secondary distribution up to 24 kV. It is suitable for applications that require frequent switching and is available in a wide range of configurations. GSec is sealed for life in accordance with IEC standard 62271-1.

GSec Air is SF6-free switch disconnector or disconnector and earthing switch with dry air as the insulation medium, and vacuum interrupter for braking capacity. The global Warming Potential (GWP) of the insulating medium is zero - making it fully compliant with the EU F-gas regulation 2024/573.

GSec and GSec Air provide three positions in one structure: LINE – OPEN – EARTH. Both offerings are smart grid ready and highly flexible and suitable for line incoming/outgoing panels, also in combination with circuit breakers or with fuses.

GSec

SF6 gas insulated
Sealed for life in accordance with IEC 62271-1 standard
Can be installed in narrow 375 mm panels
High number (100 c/o) of breaking operations at rated current 630A value on line contact
Tested for use at low temperatures and type-approved for marine applications
Modular and flexible design simplifies installation, use, and maintenance

GSec Air (SF6-free)

SF6 free with dry air as insulation medium
Dry air insulation means no dedicated gas mixture and ease of maintenance and service activities
GWP of insulation medium is equal to 0
Dedicated vacuum interrupter for reliable,SF6-free breaking capacity
Compact tank with limited volume (≤25 liters)
Similar interface, footprint and operations, as the original GSec

Product scope

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	GSec	GSec Air¹
Rated voltage	up to 24 kV	up to 24 kV
Rated normal current	up to 630 A (load break switch) / 1250 A (disconnector)	up to 630 A (load break switch) / 1250 A (disconnector)
Rated short-time withstand current	up to 25 kA	up to 20 kA (load break switch) / 25 kA (disconnector)

¹GSec Air will be available for commercial sales around mid 2025. The first version will have a rated current up to 630 A / 20 kA.

Customer benefits

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Standards and compliance

Compliant with IEC 62271-102, IEC 62271-103, IEC 62271-105 standards
GSec Air is also compliant with the EU F-gas regulation 2024/573

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Flexible and modular design

GSec and GSec Air are compact and easy to integrate into existing setups
Can combine with fuses and interlock with panel earthing switch
Suitable for applications requiring frequent switching
Can be easily used in a wide range of configurations

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Safe and reliable

Sealed for life in accordance with IEC 62271-1 standards
When combined with CEF current limiting fuses, the GSec offers a full range of protection
Features reliable mechanical position indicator and pressure gauge/density switch

Learn More

GSec Air Technical Leaflet

GSec brochure

Video - GSec Air

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FAQ

How to choose between GSec and GSec Air?

The primary difference between GSec and GSec Air is the insulation medium of the main components:

GSec has SF₆ (sulfur hexafluoride) gas as the insulation medium.

GSec Air has dry air as the insulation medium with GWP of 0 and has vacuum interrupters. It is fully compliant with IEC standards and the EU F-gas regulation (EU) 2024/573.