High-voltage circuit disconnection

A device for connecting and disconnecting a high-voltage circuit, comprising:

• a first main terminal and a second main terminal for connecting the device to the high-voltage circuit;
• a first intermediate terminal connected to the first main terminal by a first impedance;
• a first arc quenching chamber arranged between the first intermediate terminal and the first main terminal;
• a second intermediate terminal connected to the first intermediate terminal by a second impedance, the first intermediate terminal being connected in series between the first main terminal and the second intermediate terminal;
• a second arc quenching chamber arranged between the first intermediate terminal and the second intermediate terminal;
• and
• a mobile armature which is configured to move between a connection position and a disconnection position in a direction for disconnecting the high-voltage circuit, the mobile armature configured to connect, in the direction for disconnecting the high-voltage circuit, the second main terminal and, in succession, the first main terminal, the first intermediate terminal and the second intermediate terminal, the armature being in contact with the first and the second main terminal in the connection position, the armature being moved beyond the second intermediate terminal in the direction for disconnecting the high-voltage circuit into the disconnection position.