1. A push button operated circuit breaker (10) with rocking control member including: a case (20) made of electrically insulating material, having a bottom wall (21), lateral walls (20a, 20b, 20c, 20d) being joined to the bottom wall (21) and an open side (21') opposite to the bottom wall (21); a button (30) that can be operated to command an electrical switching of the circuit breaker (10) and having a body provided with lateral walls (30a, 30b, 30c, 30d) crossing said open side (21'), the push button (10) being adapted to slide with respect to the case (20) along a sliding axis (Z- Z), between a forward position and a backward position; a rocking control member (70) adapted to control an electrical switching; a pressure transmitting member (60) being rotatably fastened to the body of the push button (30) and adapted to rotate with respect to a rest angular position around a rotation axis (Al-Al); an elastic element (61) adapted to bring back the pressure transmitting member (60) in the rest angular position after its rotation; characterized in that the above-mentioned elastic element is, or includes, a wire spring (61).