An electromechanical actuator for a home automation installation for closing or sun protection, the electromechanical actuator comprising at least: - an electric motor , - a gearbox , and - a spring brake , the spring brake comprising at least: - a coil spring , - a drum , the drum comprising a housing , the housing of the drum comprising an internal friction surface configured to mate with at least one winding of the coil spring , - an input member , - an output member , and - a cover , ▪ the input member comprising a driving tooth , the driving tooth extending between the input member and the cover , in an assembled configuration of the spring brake , and ▪ the input member or the cover comprising a spacer , the spacer extending between the input member and the cover , in the assembled configuration of the spring brake , characterized in that the input member comprises a first radial holding element of the coil spring extending between the driving tooth and the spacer , along a first side (C1) of the spring brake , in the assembled configuration of the spring brake , and in that the cover comprises a second radial holding element of the coil spring extending between the driving tooth and the spacer , along a second side (C2) of the spring brake , in the assembled configuration of the spring brake , the second side (C2) of the spring brake being opposite the first side (C1) of the spring brake , relative to an axis of rotation (X) of the spring brake . the electromechanical actuator comprising at least: - an electric motor , - a gearbox , and - a spring brake , - an electric motor , - a gearbox , and - a spring brake , the spring brake comprising at least: - a coil spring , - a drum , the drum comprising a housing , the housing of the drum comprising an internal friction surface configured to mate with at least one winding of the coil spring , - an input member , - an output member , and - a cover , ▪ the input member comprising a driving tooth , the driving tooth extending between the input member and the cover , in an assembled configuration of the spring brake , and ▪ the input member or the cover comprising a spacer , the spacer extending between the input member and the cover , in the assembled configuration of the spring brake , - a coil spring , - a drum , the drum comprising a housing , the housing of the drum comprising an internal friction surface configured to mate with at least one winding of the coil spring , - an input member , - an output member , and - a cover , ▪ the input member comprising a driving tooth , the driving tooth extending between the input member and the cover , in an assembled configuration of the spring brake , and ▪ the input member or the cover comprising a spacer , the spacer extending between the input member and the cover , in the assembled configuration of the spring brake , ▪ the input member comprising a driving tooth , the driving tooth extending between the input member and the cover , in an assembled configuration of the spring brake , and ▪ the input member or the cover comprising a spacer , the spacer extending between the input member and the cover , in the assembled configuration of the spring brake , characterized in that the input member comprises a first radial holding element of the coil spring extending between the driving tooth and the spacer , along a first side (C1) of the spring brake , in the assembled configuration of the spring brake , and in that the cover comprises a second radial holding element of the coil spring extending between the driving tooth and the spacer , along a second side (C2) of the spring brake , in the assembled configuration of the spring brake , the second side (C2) of the spring brake being opposite the first side (C1) of the spring brake , relative to an axis of rotation (X) of the spring brake . <EOS>