Protection device configured to allow the circulation of a discharge current, the protection device comprising: - a spark gap provided with a first connection assembly and a second connection assembly, the first connection assembly comprising a first electrode and a first conductive terminal cooperating with said first electrode, the second connection assembly comprising a second electrode and a second conductive terminal cooperating with said second electrode, the first electrode and the second electrode being located remotely in such a way to allow an electric spark to be formed in-between, - an insulating casing provided with a plurality of walls forming a housing wherein are located the first electrode and the second electrode, said plurality of walls also forming an exhaust channel starting from an opening formed in the housing, the exhaust channel presenting an exit section oriented toward an exhaust direction opposed to the housing and opening outside the insulating casing, the protection device extending between a rear area of the protection device and a front area of the protection device according to a height direction, the exhaust direction being transverse to the height direction, the rear area being configured to cooperate with a receiving station and/or a receiving bracket of a base, characterised in that the spark gap is provided with a deionization chamber, wherein the first connection assembly comprises a first guiding member and wherein the second connection assembly comprises a second guiding member, the first guiding member and the second guiding member being configured so as to allow the formed electric spark to be guided toward the deionization chamber, and, the first guiding member, the second guiding member and the deionization chamber are located in the housing, wherein the deionization chamber is at least partially aligned with the opening in a parallel way to the exhaust direction. - a spark gap provided with a first connection assembly and a second connection assembly, the first connection assembly comprising a first electrode and a first conductive terminal cooperating with said first electrode, the second connection assembly comprising a second electrode and a second conductive terminal cooperating with said second electrode, the first electrode and the second electrode being located remotely in such a way to allow an electric spark to be formed in-between, - an insulating casing provided with a plurality of walls forming a housing wherein are located the first electrode and the second electrode, said plurality of walls also forming an exhaust channel starting from an opening formed in the housing, the exhaust channel presenting an exit section oriented toward an exhaust direction opposed to the housing and opening outside the insulating casing, the protection device extending between a rear area of the protection device and a front area of the protection device according to a height direction, the exhaust direction being transverse to the height direction, the rear area being configured to cooperate with a receiving station and/or a receiving bracket of a base, characterised in that the spark gap is provided with a deionization chamber, wherein the first connection assembly comprises a first guiding member and wherein the second connection assembly comprises a second guiding member, the first guiding member and the second guiding member being configured so as to allow the formed electric spark to be guided toward the deionization chamber, and, the first guiding member, the second guiding member and the deionization chamber are located in the housing, wherein the deionization chamber is at least partially aligned with the opening in a parallel way to the exhaust direction. the protection device extending between a rear area of the protection device and a front area of the protection device according to a height direction, the exhaust direction being transverse to the height direction, the rear area being configured to cooperate with a receiving station and/or a receiving bracket of a base, characterised in that the spark gap is provided with a deionization chamber, wherein the first connection assembly comprises a first guiding member and wherein the second connection assembly comprises a second guiding member, the first guiding member and the second guiding member being configured so as to allow the formed electric spark to be guided toward the deionization chamber, and, the first guiding member, the second guiding member and the deionization chamber are located in the housing, wherein the deionization chamber is at least partially aligned with the opening in a parallel way to the exhaust direction.