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.