A circuit breaker for a facility for handling pressurized fluid includes a male element and a female element. The male element includes a male body defining a first inner pipe, having a member for closing off the front end of the first pipe from at least one first radial passage of a movable valve, and a locking notch arranged on the male body. The female element includes a female body defining a second inner pipe and provided with at least one radial passage, a movable valve and several locking members movable between a first radial position, for the axial locking of the male and female bodies in the coupled configuration, and a second radial position, where the locking members free the passage of the male body in the female body. In the coupled configuration, the radial passages are in communication, while sealing gaskets cooperate radially with male and female bodies.