Gas insulated switchgearSF6 Free
GIS - high quality gas-insulated medium voltage switchgear: NS-2
We engineer reliable switchgear built on safety and durability
The NS-2 gas insulated switchgear (GIS) is a medium voltage switchgear for primary distribution that uses dry air as the insulating medium instead of SF6.
The airtight construction and metal housing allow a solid insulated bus bar to be connected to the outside of the gas tank. According to IEC 62271/DIN EN 62271, a metal tank, without phase insulation, encloses the internal switching components for each pole.
Modular design
Load break switch with 2 positions
Arc-killer option
SF₆-free and fully F-gas-free
The energy transition requires innovative and environmentally friendly solutions. This is why SGC – SwitchGear Company introduces the NS-2, an advanced medium-voltage switchgear without SF6 gas. With 100% dry air insulation, the NS-2 offers a sustainable and reliable alternative to traditional gas insulated switchgear (GIS), without compromising on performance or safety.
The NS-2 combines the advantages of conventional GIS with an environmentally friendly approach:
✅ No SF₆ gas – fully climate-neutral and future-proof
✅ Compact design – as small as traditional SF₆ GIS
✅ Long service life – expected 30–40 years of reliable operation
✅ Low maintenance – hermetically sealed metal enclosure
✅ Safety and reliability – tested according to IEC standardsÂ
Video NS-2
Discover the NS-2:
A fully F-gas free medium voltage switchgear solution designed for the next generation of power networks.
Built without SF₆ and other F-gases, the NS-2 combines high reliability, operational safety and digital monitoring in one compact and future-ready design.
Whether you are upgrading your grid or building new infrastructure, the NS-2 offers a sustainable and efficient solution without compromise.
🔹 Key features:
• Fully F-gas free design
• High reliability and long service life
• Integrated digital monitoring
• Flexible configurations for various applications
• Enhanced safety in operation
Body arc fastness and safety
The DF-2 is designed to withstand an internal arc of light, both for the operator and the installation. Due to a very sophisticated system of pressure relief, the arc of light is confined to the compartment where it originated and does not propagate to the operator or to other compartments.
A short circuit or other defect can cause an internal arc of light. If a light arc occurs in a classic MS cell, it can cause severe damage to the plant, even causing injury and electrocution to the operator. With built-in arc-killers, SBC aims to protect its users and operators.
DF-2 Cells’ anti-arc kit is specially designed to minimize the effects of an internal arc. As standard, all delivered cells are equipped with downward-facing relief valves at the rear.
In addition, all cells from SGC nv SwitchGear Company are arc-resistant.
The DF-2 cells were tested at KEMA IAC (AFL) for 20 kA/1s, as well as at a rated voltage of 17.5 kV/24kV according to IEC 62271-200, Appendix A and met the 5 criteria.
DF-2 AIS PRODUCT LINE
Discover the product that’s right for you. SBC helps you choose the best solution. Our DF-2 series is our most popular product series, and for good reason. Our DF-2 series is specially designed and built to withstand extreme weather conditions. It is applicable in all parts of the world, be it extremely cold or extremely hot temperatures. It is also built to last: all components are robust and of the highest quality. Guaranteed user safety, co-engineering and durable quality are some of the reasons why SGC is a preferred partner.
Want the top of the line with built-in ARC killer? Then go for the DF-2+. The DF-2+ includes the SV-25 arc-killer, a system for detecting and extinguishing an internal arc. The arc-killer extinguishes the arc by diverting it to a metal grounded short circuit. The arc flame is extinguished in less than 50 ms.
A DF-2+ is metal enclosed equipment of the DF-2 type combined with a sleeve at the rear of the cell. That tube captures the gas (in case of an arc flame) that escapes through the drain valves. This allows the expansion of hot gases in a room to be kept to an absolute minimum.
Want more information? Our team is here to help. Contact us today
Technical specifications
The NS-2 meets the most stringent international standards and offers impressive technical performance:
📌 Rated voltage: 24 kV or 36 kV
📌 Rated current: up to 2500 A
📌 Short-circuit withstand: 31.5 kA for 3 sec
📌 Insulation medium: 100% dry air, no SF₆
📌 Protection class: IP65 for high-voltage components
📌 Operating temperature: -5°C to +40°C
📌 Arc-fault protection: 31.5 kA / 1 sec
These specifications make the NS-2 ideally suited for demanding industrial applications and ensure safe, efficient operation.
Our DF-2 medium voltage cells can be used in several configurations
DF-A
Arrival cell or cable field with load break switch RV44 and locked ground blade
DF-P
Protection cell or transformer field with load break switch/fuse combination
DF-C-750
Measuring cell
DF-K
Cable cell and/or busbar sleeve
Other SGC solutions
GIS
Gas insulated switchgear
We excell in co-engineering made to measure solutions
Innovation and care for the environment are the driving forces behind our products and our company. A lot of our products are developed from co-engineering with clients, supplying solutions that fit their needs and specifications.
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