EN 397:2012 + A1:2012

EN 397 specifies physical and performance requirements of industrial safety helmets. Helmets certified to EN 397 must meet the following requirements:

• Shock absorption

• Resistance to penetration

• Flame resistance

• Chin-strap anchorage – chin-strap releases at minimum 150N and maximum 250N


In accordance with EN 397, an industrial safety helmet may also meet the following optional requirements:

• Very low temperatures (-20 °C or -30 °C)

• Very high temperatures (+150 °C)

• Electrical insulation (440V AC)

• Molten metal (MM)

• Lateral deformation (LD)



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