The invention relates to an ear protection device (10) for ear defenders (44) and for fastening to a protective helmet (12), wherein the ear protection device (10) comprises a housing (14) with a bearing device (16, 18), via which it is pivotably mounted in a fork-like supporting bracket (48). According to the invention, it is provided that a communications device (20, 22, 24, 26) is arranged in the housing (14) and that the bearing device (16, 18) has at least two electrically conductive contact elements (28, 30). The invention further relates to a communications system and to a protective helmet (12).
