Zero SF6.
Uncompromised performance.
SF6-free, future-proof switching technology — zero greenhouse-gas emissions, uncompromised performance for today's sustainable grid. Vacuum interruption + clean air insulation.
The first SF6-free HV breaker for 72.5–145 kV.
As the global power industry moves toward decarbonization, Siemens Energy leads the transition with its Blue Vacuum series — the first SF6-free high-voltage circuit breaker for 72.5 kV to 145 kV applications.
Using vacuum interruption technology combined with clean-air insulation, the Blue series eliminates SF6 gas entirely, reducing CO₂-equivalent emissions by 100% while delivering the same reliability and switching performance as traditional SF6 breakers.
Fully compliant with EU F-gas regulations, the Blue Vacuum breaker prepares your grid for a carbon-neutral future — without compromising performance, compactness, or lifecycle cost.
Five reasons utilities are switching.
- Zero SF6 emissions — no greenhouse gas, no F-gas reporting burden
- Clean air insulation — natural atmospheric air as the insulating medium
- Future-proof — complies with the EU F-gas phase-down and equivalent regulations globally
- Lower lifecycle cost — no SF6 handling, monitoring, top-up, or end-of-life recycling
- Same footprint — drop-in replacement dimensions for existing SF6 installations
The numbers that matter.
SF6 is 23,500× more potent as a greenhouse gas than CO₂. Every Blue Vacuum breaker installed eliminates that risk permanently.
Two ratings. Same clean-air platform.
Where "zero emissions" matters most.
Green Substations
SF6-free substations for eco-conscious utilities and municipal grids pursuing net-zero targets.
Offshore Wind
Environmental compliance for offshore platforms where SF6 handling logistics are prohibitive.
Urban Substations
Safe for indoor and city installation, no gas handling equipment or SF6 monitoring rooms required.
Go green with Blue Vacuum.
Whether upgrading a legacy 110 kV substation or specifying a brownfield wind-farm collector, our engineering team returns pricing, delivery and F-gas compliance documentation within 72 hours.