An electromechanical signalling arrangement for a switchgear apparatus, said switchgear apparatus comprising: - a switching unit comprising one or more electric poles; - a truck assembly, on which said switching unit is mounted, said truck assembly being movable with respect to a supporting frame; - actuation means for moving said truck assembly, said switching unit being reversibly movable between an insertion position, at which said switching unit is electrically connected to an electric line, and a withdrawal position, at which said switching unit is electrically disconnected from said electric line; wherein said electro-mechanical signalling arrangement is mounted on said truck assembly and interacts with said actuation means to provide electric signals indicative of the position of the switching unit at said insertion position, at said withdrawal position or at an intermediate position that is different from said insertion position and said withdrawal position; wherein said electro-mechanical signalling arrangement comprises a first signalling mechanism, which comprises a first actuation mechanism that interacts with said actuation means, and a first actuation rod that is operatively connected to said first actuation mechanism, said first actuation mechanism moving said first actuation rod with a linear motion between a first position, which corresponds to a position (A, C) of the switching unit that is different from said withdrawal position, and a second position, which corresponds to said withdrawal position of the switching unit; wherein said electro-mechanical signalling arrangement comprises a second signalling mechanism, which comprises a second actuation mechanism that interacts with said actuation means, and a second actuation rod that is operatively connected to said second actuation mechanism, said second actuation mechanism moving said second actuation rod with a linear motion between a third position, which corresponds to a position (B, C) of the switching unit that is different from said insertion position, and a fourth position, which corresponds to said insertion position of the switching unit; characterised in that it comprises: - an auxiliary contact device comprising a fixed contact sub-assembly having a plurality of fixed contacts (711, 712), a movable contact sub-assembly having at least a movable contact that is rotationally couplable with said fixed contacts, and a rotating shaft that is free to rotate around a first axis and that is solidly coupled with said movable contact sub-assembly; - motion transmission means that mechanically couple said first and second actuation rod (82, 92) with said rotating shaft, said first actuation rod reversibly moving said rotating shaft between a first rotation position, which corresponds to said intermediate position of the switching unit, and a second rotation position, which corresponds to said withdrawal position of the switching unit, said second actuation rod reversibly moving said rotating shaft between said first rotation position and a third rotation position, which corresponds to said insertion position of the switching unit. - a switching unit comprising one or more electric poles; - a truck assembly, on which said switching unit is mounted, said truck assembly being movable with respect to a supporting frame; - actuation means for moving said truck assembly, said switching unit being reversibly movable between an insertion position, at which said switching unit is electrically connected to an electric line, and a withdrawal position, at which said switching unit is electrically disconnected from said electric line; - an auxiliary contact device comprising a fixed contact sub-assembly having a plurality of fixed contacts (711, 712), a movable contact sub-assembly having at least a movable contact that is rotationally couplable with said fixed contacts, and a rotating shaft that is free to rotate around a first axis and that is solidly coupled with said movable contact sub-assembly; - motion transmission means that mechanically couple said first and second actuation rod (82, 92) with said rotating shaft, said first actuation rod reversibly moving said rotating shaft between a first rotation position, which corresponds to said intermediate position of the switching unit, and a second rotation position, which corresponds to said withdrawal position of the switching unit, said second actuation rod reversibly moving said rotating shaft between said first rotation position and a third rotation position, which corresponds to said insertion position of the switching unit.