Patent ID: 7297890

Claim:
An earthing switch ( 1 ) for a medium voltage switchgear comprising: a plurality of fixed contacts ( 10 a , 10 b , 10 c ); a plurality of movable contact surfaces ( 15 a , 15 b , 15 c ) which are suitable to contact said plurality of fixed contacts ( 10 a , 10 b , 10 c ); a support structure ( 30 ) suitable to support moving means which allow the movement of said second plurality of contact surfaces ( 15 a , 15 b , 15 c ); at least one guide which comprises a fixed element ( 40 a , 40 b , 40 c ) and a moving element ( 20 a , 20 b , 20 c ) coaxially coupled therewith, said moving element ( 20 a , 20 b , 20 c ) being operatively connected to said movable contact surfaces ( 15 a , 15 b, a 5 c ) so as to allow their movement along a substantially rectilinear direction from a first position, corresponding to an open condition of said switch ( 1 ), to a second position corresponding to a closed condition of said switch ( 1 ); a cross rod ( 25 ) that is associated to said guide for connecting a plurality of moving elements, said cross rod being operatively coupled to the moving element and to the fixed element of said guide, said cross rod moving along said fixed element during the movement of said moving element.