Switching device with dual conductive housing

An electric power distribution switchgear comprising a sealed gas tight enclosure inside which is located at least one switching device, the at least one switching device including:

• a first electrically conducting housing which encloses an actuator mechanism for a first contact assembly,
• a second electrically conducting housing which encloses a second contact assembly,
• said first electrically conducting housing being arranged at a distance from said second electrically conducting housing,
• a third housing which is electrically insulating and arranged between the first electrically conducting housing and the second electrically conducting housing, and
• said at least one switching device being a puffer type switch;
• wherein the enclosure is only filled with a dielectric insulating medium having a global warming potential lower than that of SF6.