When selecting hearing protection, it is common to focus on attenuation levels alone. However, when using helmet‑mounted ear defenders, compatibility between head and hearing protection is critical and often misunderstood.
Mounted ear defenders are designed to work in combination with specific safety helmets or browguards to achieve the intended headband force. This force is essential for ensuring the ear defenders seal correctly against the head, delivering the expected level of hearing protection throughout use.
Why compatibility matters
Hearing protectors are tested on the products they are designed to be compatible with. This testing assesses how the products perform together, including changes in headband force during foreseeable use.
Using mounted ear defenders with incompatible helmets or browguards means the level of hearing protection provided is unknown. Even if products can physically be fitted together, the force exerted by the combination may not have been verified.
Where the headband force is too low, attenuation is reduced, increasing the risk of noise exposure. Where it is too high, wearer comfort can be compromised, potentially leading to over‑protection and reduced compliance. Over time, untested combinations may also loosen, further reducing protection.
Guidance from the British Safety Industry Federation (BSIF) continues to highlight compatibility as a significant and ongoing issue. Through its Just Because It Fits campaign, BSIF has drawn attention to the widespread use of untested combinations of helmets and mounted ear defenders, where products may physically fit together but have not been assessed to confirm performance. In these cases, the level of hearing protection provided cannot be assured, increasing the risk of under‑protection or discomfort for the wearer.
Certified compatibility and PPE compliance
Mounted ear defenders are classified as Category III PPE under the PPE Regulation. This means they must be assessed as part of a complete system, not as standalone components.
Choosing certified compatible products ensures head and hearing protection have been independently tested together to confirm the correct level of attenuation is maintained. Ongoing conformity assessment helps ensure performance remains consistent throughout the product’s lifecycle.
Designing head and hearing protection to work together
JSP head and hearing protection is designed, tested and certified as compatible systems, helping safety professionals select PPE with confidence. This approach supports effective noise protection while maintaining comfort and usability in demanding working environments.
With the introduction of our latest helmet‑mounted ear defenders, the focus on compatibility becomes even more important. Ensuring head and hearing protection are selected as a complete system helps reduce risk, improve wearer acceptance and support long‑term compliance.
Key takeaway for safety professionals
When specifying mounted ear defenders, compatibility should be considered just as carefully as attenuation ratings. Selecting certified combinations helps ensure the intended level of protection is delivered and maintained over time.