Internationale Normen

International Standards
DIN EN ISO 20344 to DIN EN ISO 20347

DIN EN ISO 20344Personal safety equipment – Test procedures for shoes
DIN EN ISO 20345Personal safety equipment – Safety shoes
DIN EN ISO 20346Personal safety equipment – Protective shoes
DIN EN ISO 20347Personal safety equipment – Professional shoes

More safety for the feet

Especially feet and ankles are endangered parts of the body at many working places. According to statistics of the professional association the feet are the most affected parts coming to a share of about 20 % of the working accidents. In comparison to hands these injuries are of a more serious nature, too. Wearing foot protection helps to prevent foot injuries or at least to reduce their seriousness.

When speaking about foot protection it means footwear with special protective parts, e. g. ankle protection, an intersole against penetration or toe protection caps. The foot protection is divided into three categories which differ from each other by their potential protection effect. This is measured by endurance tests where the toe protection is a special feature.

In case of safety footwear the toe caps are tested with a test energy of 200 J. In case of protective shoes the toe caps are tested with a test energy of 100 J. Professional shoes are shoes which do not have to have toe caps but they possess other protective features.

Within the single categories there are shoes which meet special requirements, e.g. regarding conductivity or antistatics. These features are marked with symbols. The manufacturer has to label them in order to help the companies to find out the optimal personal safety equipment for their employees. A “S3” is for example a safety shoe which is used on building sites. In addition, it is safe against penetration due to an inserted steel intersole and it meets the requirements regarding antistatics and water resistance.

In October 2004, a new series of international standards was published replacing the European standards having existed since 1996 respectively 1997. Shoes fulfilling the new standards offer even more safety. The requirements for insoles have been increased and the minimal thickness of running soles has been determined. Shoes meant for water resistance have to pass a mechanical test of 15 minutes in water without moisture reaching the feet. Intersoles against penetration or toe caps not being made out of metal should meet the same safety requirements like steel intersoles or steel caps. Toxicologically relevant chrome (VI) may not be detectable nor in the upper, lining, tongue or insole. Furthermore, the shoes have to fulfill ergonomic minimum criteria.

Source: German Institute for Standardization, 2005


Classification of working, protective and safety shoes
according to DIN EN ISO 20345  –  20346  –  2034

Safety shoes DIN EN ISO 20345SBS1S1PS2S3
Protective shoes DIN EN ISO 20346PBP1P1P2P3
Working shoes DIN EN ISO 2034701010203
Basic requirements
Closed heel area
Upper material: leather
Fuel resistance, sole
Antistatic features
Energy absorption capacity at heel area
Water penetration/absorption
Penetration safety
Profiled walking sole

Protective function labelling on shoes

HROHeat protectionup to 300°C
OROFuel resistance
PPenetration safetyup to 1000 Newton
Electrical resistance:
conductive shoes
antistatic shoes
max. 100 Ohm
100 Ohm – 1000 Ohm
HIThermal insulation
CIColdness insulation
WRUWater penetration/absorptionwater resistant upper
EEnergy absorbing capacity
at heel area
min. 20 Joule

marking our safety footwear shoes

stahleinlage_pikt_minipuncture-resistant steel midsole*kaelte_piktogramm_miniCold protection (CI)
synthetik_pikt_minipuncture-resistant synthetic midsole*piktogr_kettens_miniChain saw protection
stahlkappe_pikt_ministeel toe cap*vegan_piktogramm_minifree from animal products
stahl_air_miniperforated steel toe cap*vibram_piktpgr_miniOriginal Vibram® Sole
complight_pikt_minicomposite toe cap*esd_piktogramm_minielectrostatic discharge (ESD)
kwf_miniproofed by KWF

 *) according to EN ISO 20344, DIN EN 12568