A HVDC disconnector is disclosed. The HVDC disconnector comprises a fixed contact comprising a guide and a pair of conducting members positioned in the guide wherein the first and second conducting members are both tulip contacts; a movable contact comprising a fixed arm and a mobile arm having a conducting terminal, wherein the mobile arm is movable from an open position to a closed position to close a connection between the fixed contact and the second contact.

A HVDC disconnector is disclosed. The HVDC disconnector comprises a fixed contact comprising a guide and a pair of conducting members positioned in the guide wherein the first and second conducting members are both tulip contacts; a movable contact comprising a fixed arm and a mobile arm having a conducting terminal, wherein the mobile arm is movable from an open position to a closed position to close a connection between the fixed contact and the second contact.

A device having one or more switching mechanisms configured to disconnect a power supply from a load; and one or more disconnector and earthing switches, each disconnector and earthing switch associated with a respective switching mechanism. Each disconnector and earthing switch comprising a telescopic disconnector blade, wherein the disconnector blade is configured to pivot around a first end between three different positions. The three positions comprise: a first position in which the disconnector and earthing switch is closed and the power supply is connected to the load through the disconnector blade; a second, isolation, position in which the disconnector and earthing switch is open and the power supply is disconnected from the load; and a third position in which the power supply is disconnected from the load and a second end of the disconnector blade is electrically connected to an earthing contact.

A low and/or medium voltage electrical pole which comprises a fixed contact and a movable contact with means for moving the movable contact along a longitudinal axis between open and closed positions. The electrical pole also comprises an insulating assembly comprising a first barrier and a second barrier. The first barrier has first and second insulating walls separated from each other and the second barrier has a third insulating wall. The first and second barriers are positioned around an axis which is substantially perpendicular to said longitudinal axis. At least one of said first and second barriers is movable around said transversal axis between a first position and a second position. When the movable contact is in the closed position, the first and second barriers are in said first position and when the movable contact is in the open position, the first and second barriers are in the second position.