Circuit breaker with sulfur hexafluoride insulation

SF6 Filling

Remove air and dry-out any excess moisture from your SF6 insulating gas with the help of Leybold’s reliable and efficient vacuum products.

Sulfur hexafluoride (SF6) Filling

Sulfur hexafluoride (SF6) is an excellent electrical insulator to prevent electrical arcs or sparks when circuit breakers open or close, so electrical industries generally fill SF6 as insulator to ensure the performance and reliability of vacuum circuit breakers. As humidity and impurities would make any insulation fail, it’s crucial to ensure the interior of a circuit breaker is dry and clean.

It’s essential to remove air and dry-out any water traces prior to filling the insulator with SF6 insulating gas. Leybold is well experienced in sizing the vacuum system to ensure a proper flow and vacuum level to produce small to large size circuit breakers.

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