A bimetal part (10) for use as an active switching element in a temperature-dependent switch has at least one inner region (13) and an outer region (12) surrounding the at least one inner region (13), the inner region (13) and the outer region (12) being formed such that in certain portions they are in one piece with one another and in certain portions they are mechanically separated from one another and being stamped in opposite directions, and at least one contact area (21) being provided on the inner region (13).