An electromechanical actuator for a home automation installation for closure or sun-protection, the electromechanical actuator comprising at least: - an electric motor, - a reducer, and - a spring brake, the spring brake comprising at least: - a helical spring, ▪ the helical spring being formed from a wire, ▪ a first end of the helical spring forming a first tab, ▪ a second end of the helical spring forming a second tab, ▪ the helical spring being of contiguous turns, in a state of rest of the spring brake, - a drum, ▪ the drum comprising a friction surface configured to cooperate with at least a turn of the helical spring, in an assembled configuration of the spring brake, - an input member, and - an output member, ▪ the output member comprising at least a lug (39a, 39b), ▪ the lug (39a, 39b) comprising a recess, ▪ the recess in the lug (39a, 39b) comprising at least a first bearing surface configured to cooperate with one of the first and second tabs (29a, 29b) of the helical spring, in the assembled configuration of the spring brake, characterized in that the first bearing surface of the recess of the output member is inclined relative to an axis of rotation of the spring brake by an angle of inclination (a) of non-zero value. the electromechanical actuator comprising at least: - an electric motor, - a reducer, and - a spring brake, - an electric motor, - a reducer, and - a spring brake, the spring brake comprising at least: - a helical spring, ▪ the helical spring being formed from a wire, ▪ a first end of the helical spring forming a first tab, ▪ a second end of the helical spring forming a second tab, ▪ the helical spring being of contiguous turns, in a state of rest of the spring brake, - a drum, ▪ the drum comprising a friction surface configured to cooperate with at least a turn of the helical spring, in an assembled configuration of the spring brake, - an input member, and - an output member, ▪ the output member comprising at least a lug (39a, 39b), ▪ the lug (39a, 39b) comprising a recess, ▪ the recess in the lug (39a, 39b) comprising at least a first bearing surface configured to cooperate with one of the first and second tabs (29a, 29b) of the helical spring, in the assembled configuration of the spring brake, - a helical spring, ▪ the helical spring being formed from a wire, ▪ a first end of the helical spring forming a first tab, ▪ a second end of the helical spring forming a second tab, ▪ the helical spring being of contiguous turns, in a state of rest of the spring brake, ▪ the helical spring being formed from a wire, ▪ a first end of the helical spring forming a first tab, ▪ a second end of the helical spring forming a second tab, ▪ the helical spring being of contiguous turns, in a state of rest of the spring brake, - a drum, ▪ the drum comprising a friction surface configured to cooperate with at least a turn of the helical spring, in an assembled configuration of the spring brake, ▪ the drum comprising a friction surface configured to cooperate with at least a turn of the helical spring, in an assembled configuration of the spring brake, - an input member, and - an output member, ▪ the output member comprising at least a lug (39a, 39b), ▪ the lug (39a, 39b) comprising a recess, ▪ the recess in the lug (39a, 39b) comprising at least a first bearing surface configured to cooperate with one of the first and second tabs (29a, 29b) of the helical spring, in the assembled configuration of the spring brake, ▪ the output member comprising at least a lug (39a, 39b), ▪ the lug (39a, 39b) comprising a recess, ▪ the recess in the lug (39a, 39b) comprising at least a first bearing surface configured to cooperate with one of the first and second tabs (29a, 29b) of the helical spring, in the assembled configuration of the spring brake, characterized in that the first bearing surface of the recess of the output member is inclined relative to an axis of rotation of the spring brake by an angle of inclination (a) of non-zero value.