A protection and connection box comprising: - a base, extending along a main axis, - a cover, fixed to the base, the cover and base forming between them an internal volume of the protection and connection box, wherein the base and the cover form between them a cable passage opening, located at one end of the protection and connection box, along the main axis, the cable passage opening being configured to allow the passage of at least two electrical cables from the outside of the protection and connection box to the internal volume, wherein the base has a groove, wherein the protection and connection box further comprises a removable sealing membrane arranged in the cable passage opening, the sealing membrane comprising: - a first flat area forming a sealing lip on its contour, the first flat area extending in a plane perpendicular to the main axis, the sealing lip being in sealed contact with the base and with the lid, - a rib, extending into the groove of the base and enabling the sealing membrane to be fixed to the base, characterised in that the box comprises a connection terminal block, fixed to the base and disposed in the internal volume, said at least two electrical cables being configured to be connected to the connection terminal block, and in that the sealing membrane further comprises: - at least two cable entry, each cable entry extending along the main axis, each cable entry being unopened and having at least one breakable zone configured to allow the cable grommet to be opened so as to allow an electrical cable to pass through the sealing membrane, and - a second flat area, extending parallel to the first flat area, the at least two cable entries extending from the second flat area, and - a side wall extending between the first flat area and the second flat area, in that the rib of the sealing membrane extends from the side wall of the sealing membrane, in that the groove in the base has at least one thin portion and at least one wide portion, and in that the rib of the sealing membrane has at least one narrow portion, extending into the at least one thin portion of the groove of the base, and at least one thick portion, extending into the at least one wide portion of the groove of the base. - a base, extending along a main axis, - a cover, fixed to the base, the cover and base forming between them an internal volume of the protection and connection box, wherein the base and the cover form between them a cable passage opening, located at one end of the protection and connection box, along the main axis, the cable passage opening being configured to allow the passage of at least two electrical cables from the outside of the protection and connection box to the internal volume, wherein the base has a groove, wherein the protection and connection box further comprises a removable sealing membrane arranged in the cable passage opening, the sealing membrane comprising: - a first flat area forming a sealing lip on its contour, the first flat area extending in a plane perpendicular to the main axis, the sealing lip being in sealed contact with the base and with the lid, - a rib, extending into the groove of the base and enabling the sealing membrane to be fixed to the base, - a first flat area forming a sealing lip on its contour, the first flat area extending in a plane perpendicular to the main axis, the sealing lip being in sealed contact with the base and with the lid, - a rib, extending into the groove of the base and enabling the sealing membrane to be fixed to the base, characterised in that the box comprises a connection terminal block, fixed to the base and disposed in the internal volume, said at least two electrical cables being configured to be connected to the connection terminal block, and in that the sealing membrane further comprises: - at least two cable entry, each cable entry extending along the main axis, each cable entry being unopened and having at least one breakable zone configured to allow the cable grommet to be opened so as to allow an electrical cable to pass through the sealing membrane, and - a second flat area, extending parallel to the first flat area, the at least two cable entries extending from the second flat area, and - a side wall extending between the first flat area and the second flat area, - at least two cable entry, each cable entry extending along the main axis, each cable entry being unopened and having at least one breakable zone configured to allow the cable grommet to be opened so as to allow an electrical cable to pass through the sealing membrane, and - a second flat area, extending parallel to the first flat area, the at least two cable entries extending from the second flat area, and - a side wall extending between the first flat area and the second flat area, in that the rib of the sealing membrane extends from the side wall of the sealing membrane, in that the groove in the base has at least one thin portion and at least one wide portion, and in that the rib of the sealing membrane has at least one narrow portion, extending into the at least one thin portion of the groove of the base, and at least one thick portion, extending into the at least one wide portion of the groove of the base.