The EN 397 standard specifies physical and performance requirements, methods of test and marking requirements for industrial safety helmets. Industrial safety helmets are intended primarily to provide protection to the wearer against falling objects and consequential brain injury and skull fracture. The main characteristics that distinguish these protective devices are: the capability of absorbing blows, puncture resistance, resistance to rain and sunlight, resistance to chemical agents and flammability, dielectric properties.
The requirements are as follows:
Impact resistance: force transmitted to the head ≤5.0 kN with impact energy 49 J (a mass of 5 kg falling from a height of 1 metre).
Penetration resistance: no penetration with impact energy 29 J (a mass of 3 kg falling from a height of 1 metre).
Flame resistance: no damage after exposure to the flame for 5 seconds;
Resistance to low temperature (-20 °C or -30 °C): impact and penetration resistance at a temperature of -20 °C or -30 °C. Optional requirement.
Resistance to high temperature (+150 °C): impact and penetration resistance at a temperature of 150 °C (optional requirement).
Electrical properties (440 V AC): leakage current ≤1.2 mA at a voltage of 1,200 V AC (optional requirement).
Lateral deformation (LD) ≤40 mm and residual deformation ≤15 mm, when subject to a progressive load up to 430 N. Optional requirement.
Molten metal splashes (MM): no damage after contact with 150 g of molten iron (optional requirement).
EN 397
Products for this standard
ROCKFIRE HELMET
MD1222
![MD1222 L0](https://www.sirsafety.com/assets/img/prodotti/MD1222L0.png)
ABS 901 HELMET
MD1223
![MD1223 P0](https://www.sirsafety.com/assets/img/prodotti/MD1223P0.png)
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COSMOS HELMET
MD1211
![MD1211 E0](https://www.sirsafety.com/assets/img/prodotti/MD1211E0.png)
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ABS 900 HELMET
MD1215
![MD1215 N0](https://www.sirsafety.com/assets/img/prodotti/MD1215N0.png)
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EVEREST HELMET
MD1216
![MD1216 E1](https://www.sirsafety.com/assets/img/prodotti/MD1216E1.png)
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MARS HELMET
MD1217
![MD1217 B0](https://www.sirsafety.com/assets/img/prodotti/MD1217B0.png)
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COSMOS HELMET W/TEXTILE HARNESS
MD1219
![MD1219 E0](https://www.sirsafety.com/assets/img/prodotti/MD1219E0.png)
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CURRO HELMET
MD1220
![MD1220 L0](https://www.sirsafety.com/assets/img/prodotti/MD1220L0.png)
V-GARD HELMET
MD1413
![MD1413 E0](https://www.sirsafety.com/assets/img/prodotti/MD1413E0.png)
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V-GARD 500 HELMET
MD1414
![MD1414 B0](https://www.sirsafety.com/assets/img/prodotti/MD1414B0.png)
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JETSTREAM® BUILDERS' KIT PSL
FA2303
![FA2303](https://www.sirsafety.com/assets/img/prodotti/FA2303.png)
JETSTREAM® BUILDERS' KIT A2PSL
FA2304
![FA2304](https://www.sirsafety.com/assets/img/prodotti/FA2304.png)
POWERCAP® INFINITY® KIT
FA2326
![FA2326](https://www.sirsafety.com/assets/img/prodotti/FA2326.png)
BASIC FORESTIER SM901N+EP167+VM85M+H867
FB1134
![FB1134](https://www.sirsafety.com/assets/img/prodotti/FB1134.png)
CLIMBING PROTECTION KIT
FD1711
![FD1711](https://www.sirsafety.com/assets/img/prodotti/FD1711.png)
VERTEX HELMET YELLOW
FD2144
![FD2144](https://www.sirsafety.com/assets/img/prodotti/FD2144_2023-01-24-162427_uxex.png)
VERTEX HELMET WHITE
FD2145
![FD2145](https://www.sirsafety.com/assets/img/prodotti/FD2145.png)
VERTEX HELMET RED
FD2146
![FD2146](https://www.sirsafety.com/assets/img/prodotti/FD2146.png)
VERTEX HELMET ORANGE
FD2147
![FD2147](https://www.sirsafety.com/assets/img/prodotti/FD2147.png)
VERTEX HELMET BLACK
FD2148
![FD2148](https://www.sirsafety.com/assets/img/prodotti/FD2148.png)
VERTEX HELMET BLUE
FD2149
![FD2149](https://www.sirsafety.com/assets/img/prodotti/FD2149.png)
STRATO HELMET WHITE
FD2159
![FD2159](https://www.sirsafety.com/assets/img/prodotti/FD2159.png)
STRATO HELMET RED
FD2160
![FD2160](https://www.sirsafety.com/assets/img/prodotti/FD2160.png)
STRATO HELMET BLACK
FD2161
![FD2161](https://www.sirsafety.com/assets/img/prodotti/FD2161.png)
STRATO HELMET YELLOW
FD2162
![FD2162](https://www.sirsafety.com/assets/img/prodotti/FD2162.png)