A change-over switch comprises a shell and a conductive
system, the conductive
system comprises a rotating shaft and two groups of contact mechanisms, a rotating shaft body of the rotating shaft is rotatably arranged between the two groups of contact mechanisms, each group of
contact mechanism comprises a moving contact
assembly and a static contact
assembly which are arranged at an interval, each group of
contact mechanism further comprises a driving
assembly, and the driving assembly comprises a linkage piece. The linkage pieces are hinged between the moving contact assembly and the rotating shaft body, the
hinge point of the two linkage pieces on the rotating shaft body is not collinear with the axis of the rotating shaft body, and the rotating shaft is rotated to drive the driving assembly, so that one group of
contact mechanism is firstly switched off in place, and then the other group of contact mechanism is switched on in place. According to the utility model, the integrated rotating shaft and the two groups of driving assemblies are matched to drive the two groups of contact mechanisms, so that the internal space is saved, the internal structure is more compact, meanwhile, the opening position of one group of contact mechanism is prior to the closing position of the other group of contact mechanism, the input requirements of two groups of power supplies can be met, and the use safety is improved.