Industrial safety helmets according to EN 397 are primarily intended to protect the wearer from falling objects and their consequences – e.g. from brain injuries or skull fractures. The helmet must also be protected against lateral deformation. This should additionally protect the wearer from dangerous head injuries.

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The following requirements must be met if helmets are certified according to EN 397:

• Vertical shock absorption must be provided.

• They must have a certain penetration resistance to sharp and pointed objects.

• A chinstrap is required which triggers at a minimum of 150 N and a maximum of 250 N – or a possibility for mounting a corresponding chinstrap.

• They must be flame-resistant.

A helmet certified in accordance with EN 397 may meet the following requirements; they are, however, not mandatory requirements.

• Very High Temperature: +150c

• Low Temperature: -30c

• MM: Splashes of Molten Metal

• LD: Lateral Deformation

• Electrical Voltage up to 440v a.c.