A switching apparatus for electric systems, said switching apparatus having one or more electric pole units, each electric pole unit comprising: - a fixed contact and a movable contact, said movable contact being reversibly movable between a first operating position, at which said movable contact is separated from said fixed contact, and a second operating position, at which said movable contact is coupled to said fixed contact; - a motion transmission arrangement (6, 7) adapted to transmit mechanical forces to move reversibly said movable contact between said first and second operating positions (A, B), said motion transmission arrangement including a conductive motion transmission member coupled to said movable contact; - a first pole terminal for coupling with a corresponding first line conductor, said first pole terminal being in electrical connection to said fixed contact; - a second pole terminal for coupling with a corresponding second line conductor, said second pole terminal being in electrical connection with said conductive motion transmission member; wherein said second pole terminal and said conductive motion transmission member comprise respectively a first coupling region and a second coupling region electrically connected one over the other in such a way to provide a conductive path between said second pole terminal and said movable contact, wherein the first coupling region of said second pole terminal and the second coupling region of said conductive motion transmission member are electrically connected by one or more flexible conductors (12, 13) or have coupling surfaces in sliding contact one over the other, wherein said second pole terminal comprises a through hole at said second coupling region, said motion transmission member passing through said through hole, characterised in that each electric pole unit comprises a shielding element formed by a conductive hollow body, said shielding element being fixed to said second pole terminal and surrounding, at least partially, said first and second coupling regions (81, 61) and said flexible conductors (12, 13) or said coupling surfaces, so that said first and second coupling regions (81, 61) and said flexible conductors (12, 13) or said coupling surfaces are located in an internal volume of said shielding element. - a fixed contact and a movable contact, said movable contact being reversibly movable between a first operating position, at which said movable contact is separated from said fixed contact, and a second operating position, at which said movable contact is coupled to said fixed contact; - a motion transmission arrangement (6, 7) adapted to transmit mechanical forces to move reversibly said movable contact between said first and second operating positions (A, B), said motion transmission arrangement including a conductive motion transmission member coupled to said movable contact; - a first pole terminal for coupling with a corresponding first line conductor, said first pole terminal being in electrical connection to said fixed contact; - a second pole terminal for coupling with a corresponding second line conductor, said second pole terminal being in electrical connection with said conductive motion transmission member; wherein said second pole terminal and said conductive motion transmission member comprise respectively a first coupling region and a second coupling region electrically connected one over the other in such a way to provide a conductive path between said second pole terminal and said movable contact, wherein the first coupling region of said second pole terminal and the second coupling region of said conductive motion transmission member are electrically connected by one or more flexible conductors (12, 13) or have coupling surfaces in sliding contact one over the other, wherein said second pole terminal comprises a through hole at said second coupling region, said motion transmission member passing through said through hole, characterised in that each electric pole unit comprises a shielding element formed by a conductive hollow body, said shielding element being fixed to said second pole terminal and surrounding, at least partially, said first and second coupling regions (81, 61) and said flexible conductors (12, 13) or said coupling surfaces, so that said first and second coupling regions (81, 61) and said flexible conductors (12, 13) or said coupling surfaces are located in an internal volume of said shielding element.