An electromechanical actuator for a circuit breaker of a high-voltage electrical facility, said actuator including: - a mobile equipment being mobile between: o an active position, at which a rod , integral with the mobile equipment , enables the facility to be turned on, and o an inactive position, at which said rod enables the facility to be turned off, - a displacement device for displacing said mobile equipment , comprising a chassis and ensuring shifting of the mobile equipment from the active position to the inactive position, or vice versa, - an electric energy storage device , - a control module for controlling the displacement device , said control module ensuring energy transfer between said energy storage device and said displacement device , the displacement device provides linear displacement by induction of the mobile equipment equipped with the rod and for this purpose includes a series of at least three coils inserted in a magnetic circuit positioned on the chassis ; characterised in that the mobile equipment is displaceably mounted to at least one rail of said chassis and includes a conductive material able to be displaced under the effect of a magnetic field generated by each of said at least three coils when the same are supplied with electric energy by the control device in accordance with a predetermined dynamic control law, said dynamic control law being a vector control law for following an acceleration profile, and in that said mobile equipment comprises a plate made of conductive material, with a substantially rectangular shape having two sides parallel to the at least one guide rail attached to the chassis . - a mobile equipment being mobile between: o an active position, at which a rod , integral with the mobile equipment , enables the facility to be turned on, and o an inactive position, at which said rod enables the facility to be turned off, o an active position, at which a rod , integral with the mobile equipment , enables the facility to be turned on, and o an inactive position, at which said rod enables the facility to be turned off, - a displacement device for displacing said mobile equipment , comprising a chassis and ensuring shifting of the mobile equipment from the active position to the inactive position, or vice versa, - an electric energy storage device , - a control module for controlling the displacement device , said control module ensuring energy transfer between said energy storage device and said displacement device , the displacement device provides linear displacement by induction of the mobile equipment equipped with the rod and for this purpose includes a series of at least three coils inserted in a magnetic circuit positioned on the chassis ; characterised in that the mobile equipment is displaceably mounted to at least one rail of said chassis and includes a conductive material able to be displaced under the effect of a magnetic field generated by each of said at least three coils when the same are supplied with electric energy by the control device in accordance with a predetermined dynamic control law, said dynamic control law being a vector control law for following an acceleration profile, and in that said mobile equipment comprises a plate made of conductive material, with a substantially rectangular shape having two sides parallel to the at least one guide rail attached to the chassis . <EOS>