Rotating arc power outage device such as a circuit breaker or a switch, comprising a stationary contact and a mobile contact, the mobile contact being movable between a closed position, wherein it is in electrical contact with the stationary contact and an open position, wherein it is spaced from the stationary contact as well as at least one inducer including a coil for generating a magnetic field extending to make an electric arc appearing between the contacts (11, 16) rotate, during the opening of these contacts to favour the extinction of this arc, the inducer comprising a hub comprising a cylindrical portion on which is wound a metal strip to form a coil, a metal ring clamping this coil, the cylindrical portion of the hub being extended by a circular plate perpendicular to the cylindrical portion, this plate being spaced from the coil and insulated from this coil, the coil having an end electrically connected to the plate via the cylindrical portion of the hub and an end electrically connected to the metal ring clamping the coil, characterised in that - the plate is spaced and insulated from the coil by an insulating material; - the inducer is mounted at the end of a support of the stationary contact by being mobile between a retracted position and a deployed position, with a spring, continually returning this inducer to the deployed position thereof; - the mobile contact has a piston shape comprising a sleeve of the same diameter as the ring of the inducer and a cap bearing on the inducer against the spring to keep it retracted when this mobile contact is closed, this cap being offset from the inducer, such that it occupies the deployed position thereof when the mobile contact is open; - the stationary contact is a sliding contact extending in the extension of the stationary contact support by having a free end which bears radially against the sleeve of the mobile contact when this mobile contact is closed and bears radially against the ring of the inducer when the mobile contact is open, to make it possible for the establishment of an electric arc between the plate and the ring to limit the current passing through the coil in case of need. - the plate is spaced and insulated from the coil by an insulating material; - the inducer is mounted at the end of a support of the stationary contact by being mobile between a retracted position and a deployed position, with a spring, continually returning this inducer to the deployed position thereof; - the mobile contact has a piston shape comprising a sleeve of the same diameter as the ring of the inducer and a cap bearing on the inducer against the spring to keep it retracted when this mobile contact is closed, this cap being offset from the inducer, such that it occupies the deployed position thereof when the mobile contact is open; - the stationary contact is a sliding contact extending in the extension of the stationary contact support by having a free end which bears radially against the sleeve of the mobile contact when this mobile contact is closed and bears radially against the ring of the inducer when the mobile contact is open, to make it possible for the establishment of an electric arc between the plate and the ring to limit the current passing through the coil in case of need.