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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