本文件规定了安装在头部保护装置和/或面部保护装置（以下简称“安装式耳罩”）上的耳罩的结构、设计、性能、标记和用户信息的要求。 特别是，它规定了根据EN ISO 4869-1:2018测量的安装式耳罩的声音衰减要求。 本标准规定的耳机尺寸范围不适用于本标准。 因为有一种耳罩是设计用来保护头部和/或脸部的 保护装置可安装在许多其他型号和尺寸的载体上，本标准的这一部分规定了当安装到指定型号或尺寸的头部保护和/或面部保护装置时，对耳罩的一系列物理和声学要求。 所有要求适用于安装在指定型号或尺寸的头部保护装置和/或面部保护装置（基本组合）上的耳罩。当同一型号的耳罩安装到其他指定型号或 头部保护装置和/或面部保护装置的尺寸（补充组合）。 在要求范围内，通过考虑用户、设备和设备可能使用的工作环境（见附录ZA和EN 458）之间的交互作用来解决人体工程学方面的问题。

This document specifies requirements for construction, design, performance, marking and user information for earmuffs attached to head protection and/or face protection devices, hereinafter referred to as ‘mounted earmuffs’. In particular, it specifies requirements regarding the sound attenuation of mounted earmuffs, measured in accordance with EN ISO 4869-1:2018. The document does not apply to earmuffs outside the size range of headsizes as defined in this standard. Because one model of earmuffs designed to be attached to head protection and/or face protection devices can be fitted to a number of other models and sizes of the carrier, this part of the standard sets out a series of physical and acoustic requirements for earmuffs when fitted to the specified model(s) or size(s) of head protection and/or face protection device. All requirements apply to earmuffs fitted to one of the specified models or sizes of head protection and/or face protection device (the basic combination). An abbreviated set of requirements applies to the same model of earmuffs when fitted to the other specified models or sizes of head protection and/or face protection device (the supplementary combinations). Ergonomic aspects are addressed by taking into account, within the requirements, the interaction between the user, the device and, where possible, the working environment in which the device is likely to be used (see Annex ZA and EN 458).