Low-voltage switch pole

A low-voltage switching device, comprising:

• at least a switch pole, comprising:
• an insulating casing defining an internal space with a contact region and an arc extinguishing region of said switch pole;
• a first pole terminal and a second pole terminal couplable with corresponding line conductors of an electric line;
• a fixed contact assembly arranged in said contact region and including a plurality of fixed electric contacts electrically connected to said first pole terminal, said fixed electric contacts including one or more first fixed contacts and one or more second fixed contacts electrically insulated from said first fixed contacts;
• a movable contact assembly arranged in said contact region and including a plurality of movable electric contacts electrically connected to said second pole terminal, said movable electric contacts including one or more first movable contacts and one or more second movable contacts, said movable contact assembly being reversibly movable around a rotation axis, so that said first movable contacts can be coupled to or decoupled from said first fixed contacts and said second movable contacts can be coupled to or decoupled from said second fixed contacts, when said movable contact assembly moves about said rotation axis;
• and
• an arc chamber arranged in said arc extinguishing region and comprising a plurality of arc-breaking elements,
• wherein said switch pole comprises a magnetic field generation arrangement including a first coil conductor and a second coil conductor wound around a winding axis parallel to the rotation axis of said movable contact assembly, said first and second coil conductors being spaced one from another along said winding axis and being electrically connected in series between said second fixed contacts and said first pole terminal,
• wherein said magnetic field generation arrangement is configured to generate a magnetic field during an opening maneuver of the switch pole, the generated magnetic field being directed in such a way to make electric arcs, which arise between said fixed contact assembly and said movable contact assembly under separation, displace towards the arc extinguishing region of said switch pole, and
• wherein the switch pole comprises a magnetic shield arrangement arranged at an opposite side of the switch pole relative to said fixed contact assembly, said magnetic shield arrangement configured to confine the magnetic field generated by said magnetic field generation arrangement, during the opening maneuver of said switch pole.