The invention relates to an overload clutch (100) for medium voltage switchgears, with a torque introducing cog or chain wheel (6), provided with near to the circumferential line arrangend balls (3), caught in openings of the cog or chain wheel (6) on one side, and caught in openings of a disc spring (2) on the opposing side, which couples by that the introducing torque to a shaft (1) and an kinematic chain arrangement for medium voltage switchgears, with mechanical coupling between a drive and the switching elements of switches, wherein torque overload is prevented by overload clutch. In order to overcome functional disadvantages in a very efficient way, the invention is, that the aforesaid shaft is connected torque proof with the disc spring, and that the disc spring is strained axially by an adjustable axial tension of the shaft with the cog or chain wheel.