Switch for protecting of electric circuit (L 1, L 2; N 1, N 2) against overloading, comprising a triggering assembly as well as an interrupting assembly, which are adjusted to cooperate with each other, wherein said interrupting assembly is adapted to interrupt each electric circuit (L 1, L 2; N 1, N 2), which is established by means of at least one phase conductor (L 1, L 2) and at least one neutral conductor (N 1, N 2) together with said switch and at least one electric user i.e. each load, on the basis of receiving an impulse from the side of said triggering assembly; and wherein said triggering assembly comprises an induction unit, a thermic interrupter and an actuating needle suitable for generating an impulse, on the basis of which the interrupting assembly is then able to interrupt said electric circuit; wherein the induction unit comprises at least a casing, which is functioning as an electromagnetic yoke, a coil, which is arranged in a heat-conductive relationship with said thermic interrupter and is electrically integrated within said electric circuit for the purposes generating a magnetic field due to induced voltage, when the short circuit current occurs within said electric circuit; as well as an anchor, which is mechanically interconnected with said actuating needle, which is axially displaceable towards the interrupting assembly by means of the magnetic field whenever generated by said coil; and wherein said thermic interrupter is arranged adjacent to the induction unit and in a thermal-conductive relationship therewith, and comprises a bimetallic membrane, which is mechanically interconnected with the previously mentioned actuating needle and is moreover, when heated due to current overloading within said electric circuit, in a direction of said actuating needle axially displaceable from its initial position towards the interrupting assembly due to generating an impulse and interrupting said circuit, and wherein said switch further comprises a varistor which is arranged in a heat-conductive relationship with said thermic interrupter, by which - either the first electric contact of the varistor is electrically connected to the phase conductor (L 1; L 2) of the electric circuit (L 1, L 2; N 1, N 2), while the second electric contact of the varistor is electrically connected to the neutral conductor (N 1, N 2) of the electric circuit (L 1, L 2; N 1, N 2) - or the first electric contact of the varistor is electrically connected to the phase conductor (L 1, L 2) of the electric circuit (L 1, L 2; N 1, N 2), while the second electric contact of the varistor is electrically connected to the earth conductor of the electric circuit (L 1, L 2; N 1, N 2) characterized in that said coil is surrounded with said varistor, which is a hollow cylindrical varistor, and a heat-conductive relationship is established between said coil and said varistor. - either the first electric contact of the varistor is electrically connected to the phase conductor (L 1; L 2) of the electric circuit (L 1, L 2; N 1, N 2), while the second electric contact of the varistor is electrically connected to the neutral conductor (N 1, N 2) of the electric circuit (L 1, L 2; N 1, N 2) - or the first electric contact of the varistor is electrically connected to the phase conductor (L 1, L 2) of the electric circuit (L 1, L 2; N 1, N 2), while the second electric contact of the varistor is electrically connected to the earth conductor of the electric circuit (L 1, L 2; N 1, N 2)