An electric motor, comprising: - a frame defining an internal volume of the electric motor and comprising: • a rotor and a stator positioned in the internal volume of the frame, • a primary cooling circuit comprising at least one primary conduit going through the internal volume of the frame and in fluidic communication with the outside of the frame in order to circulate a gas coming from the outside of the frame into the internal volume of the frame, • a secondary cooling circuit extending in the internal volume of the frame and isolated from the outside of the frame, said secondary cooling circuit comprising at least one first cooling channel going through the rotor and at least one second cooling channel going through the stator, • at least one heat insulation channel interposed between the primary conduit of the primary cooling circuit and the second cooling channel of the secondary cooling circuit; characterized in that - the primary conduit of the primary cooling circuit and the second cooling channel of the secondary cooling circuit go through a body of the stator and extend parallel to the rotation axis X-X' in the body of the stator; - the heat insulation channel creates a thermic barrier between the primary conduit and the second cooling channel of the secondary cooling circuit for blocking the thermal exchanges between the second cooling channel and the primary conduit; - the first cooling channel and the second cooling channel form a closed loop and are in fluidic communication. - a frame defining an internal volume of the electric motor and comprising: • a rotor and a stator positioned in the internal volume of the frame, • a primary cooling circuit comprising at least one primary conduit going through the internal volume of the frame and in fluidic communication with the outside of the frame in order to circulate a gas coming from the outside of the frame into the internal volume of the frame, • a secondary cooling circuit extending in the internal volume of the frame and isolated from the outside of the frame, said secondary cooling circuit comprising at least one first cooling channel going through the rotor and at least one second cooling channel going through the stator, • at least one heat insulation channel interposed between the primary conduit of the primary cooling circuit and the second cooling channel of the secondary cooling circuit; • a rotor and a stator positioned in the internal volume of the frame, • a primary cooling circuit comprising at least one primary conduit going through the internal volume of the frame and in fluidic communication with the outside of the frame in order to circulate a gas coming from the outside of the frame into the internal volume of the frame, • a secondary cooling circuit extending in the internal volume of the frame and isolated from the outside of the frame, said secondary cooling circuit comprising at least one first cooling channel going through the rotor and at least one second cooling channel going through the stator, • at least one heat insulation channel interposed between the primary conduit of the primary cooling circuit and the second cooling channel of the secondary cooling circuit; - the primary conduit of the primary cooling circuit and the second cooling channel of the secondary cooling circuit go through a body of the stator and extend parallel to the rotation axis X-X' in the body of the stator; - the heat insulation channel creates a thermic barrier between the primary conduit and the second cooling channel of the secondary cooling circuit for blocking the thermal exchanges between the second cooling channel and the primary conduit; - the first cooling channel and the second cooling channel form a closed loop and are in fluidic communication.