NITRAS SAFETY | Standards and pictograms - Foot protection

All performance levels, pictograms and information given on this page correspond to the status as of September 2025. This information may change during the validity of this page. Please do not hesitate to contact us if you have any questions or require up-to-date information. All information without guarantee.

EN ISO 20345:2011

Personal protective equipment - Safety footwear
Basic and additional (optional) requirements for safety footwear used for general purpose. It includes for example mechanical risks, slip resistance, thermal risks, ergonomic behaviour.

Category Description
SB Basic requirements, slip resistance (ceramic tiles and NaLS)
S1 Basic requirements, closed seat region, antistatic properties,
energy absorption of seat region
S2 Basic requirements, closed seat region, antistatic properties, energy absorption of
seat region, resistance to fuel oil, protection against water penetration and water
absorption of the upper
S3 Basic requirements, closed seat region, antistatic properties, energy absorption of seat
region, resistance to fuel oil, protection against water penetration
and water absorption, penetration resistance, cleated outsole
Additionally S3S and S3L for metal-free insocks

Further symbols

SRA Slip resistance (ceramic tile floor with NaLS)
SRB Slip resistance (steel floor with glycerine)
SRC Slip resistance (SRA and SRB passed)
P Penetration resistance
C Conductive footwear
A Antistatic footwear
HI Heat insulation of sole complex
CI Cold insulation of sole complex
E Energy absorption of seat region
WR Water resistance
M Metatarsal protection
AN Ankle protection
CR Cut resistance
WPU Water penetration and absorption*
HRO Resistance to hot contact
FO Resistance to fuel oil

*Upper: protection against water penetration and absorption

EN ISO 20345:2022

Category Description
SB Basic requirements
S1 Basic requirements, closed seat region, antistatic properties,
energy absorption of seat region
S2 Basic requirements, closed seat region, antistatic properties, energy absorption of
seat region, resistance to fuel oil, protection against water penetration and water
absorption of the upper
S3 (metallic insole, type P) Basic requirements, closed heal region, antistatic properties, energy absorption capacity in the heal area, fuel resistance, protection against water penetration and absorption, puncture resistance, trded sole

S3L (non-metallic insole, type PL) Basic requirements, closed heel area, antistatic properties, energy absorption capacity in the heel area, protection against water penetration and water absorption, resistance to puncture, treaded sole

S3S (non-metallic insole, type PS) Basic requirements, closed heel area, antistatic properties, energy absorption capacity in the heel area, protection against water penetration and water absorption, higher requirements for puncture resistance than for type PL, treaded sole

S7S (non-metallic insole, type PS) Basic requirements, closed heel area, antistatic properties, energy absorption capacity in the heel area, protection against water penetration and water absorption, resistance to punctures, treaded sole, waterproofness of the shoe when assembled

Further symbols

SR Slip resistance (ceramic tile floor with NaLS)
P Metallic insocks with penetrations resistance with conical nail with 4.5 mm diameter
PL Penetration resistance (non-metallic insert)
PS Penetration resistance (non-metallic insert)
C Partially conductive shoes
A Antistatic footwear
HI Heat insulation of sole complex
CI Cold insulation of sole complex
HRO Resistance to heat contact
FO Resistance to fuel oil
E Energy absorption of seat region
WR Water resistance
M Metatarsal protection
AN Ankle protection
CR Cut resistance
SC Bump cap abrasion
WPA Water penetration and absorption*
LG Ladder grip

*Upper: protection against water penetration and absorption

Shoe weight

Specifies the weight of a shoe in size 42 in grams (g).

EN 61340-4-3

Electrostatics, Part 4-3 - Footwear
This part of IEC 61340 describes a test method for determining the electrical resistance of footwear, with which the electrostatic potential on individuals is controlled. This standard is suitable for use by manufacturers of footwear as well as by end users.

DGUV Rule 112-191

These safety shoes are tested in accordance with DGUV Rule 112-191 and can be customised to minimise foot complaints and the resulting consequential damage.

Type 1 - Equipment with adjusted insocks
Type 2 - Modied safety shoes (trimming)

Partner: Matthias Hartmann Orthopädie + Sport GmbH, Schelde-Lahn-Straße 20, 35713 Eschenburg, Germany, www.hartmann-os. com

Premium quality

The quality of our products is our first priority and our whole product range is meeting our high standards. Products which have further premium features (e.g. due material selection, fitting, characteristics, finishing) are marked with this pictrogram.

Variants

This pictogram identifies safety shoes that are available in different versions (clogs, slippers, low shoes, boots or winter boots).

three wide

This pictogram identifies safety shoes that are compatible with our COMFORT STEP insoles in three widths.

Ergo Step

This pictogram identifies safety shoes that are compatible with our semi-orthopaedic ERGO STEP insoles.

Seconamics

This pictogram identifies safety shoes that are equipped with our waterproof SECONAMICS membrane.

Pronamics

This pictogram identifies safety shoes that are equipped with our PRONAMICS technology. This is characterised by excellent cushioning and energy recovery.

Fit System

This pictogram identifies safety shoes that are equipped with our NITRAS FIT SYSTEM. The article number indicates which accessory kit can be used.

Labelling

The application examples given on this page merely act as a rough overview in order to outline which safety shoes are suitable for which application. All safety shoes are partly suitable for other applications as well. Further subjective user preferences (e.g. material, breathability, outsole) are not considered. This guide can not and should not replace personal advice. Furthermore the selection of the right safety shoes has always to be performed with regard to the risks at the workplace. For further information please do not hesitate to contact us.

ADVANTAGES / PROPERTIES / APPLICATIONS

Advantages / properties (e.g.): toe cap, light-weight, flexible, possibly very breathable as the seat region can be open, for dry working environment. Applications (e.g.): workplaces with a small number of different

risks, danger from impacts or from falling objects (e.g. hospitals, care facilities, food industry, canteens).

Advantages / properties (e.g.): toe cap, closed seat region, light-weight, breathable, for dry working environments. Applications (e.g.): as SB, additionally with closed seat region (e.g. commercial driver, logistics, commissioning).

Advantages / properties (e.g.): toe cap, closed seat region, upper protects against water penetration and absorption, cleated outsole, protection against penetration of sharp and edged objects. Applications (e.g.): as S2, risk of penetration by sharp / edged objects (e.g. construction, waste management sector, landscape gardening.

risks, danger from impacts or from falling objects (e.g. hospitals, care facilities, food industry, canteens).

Advantages / properties (e.g.): toe cap, closed seat region, upper protects against water penetration and absorption, cleated outsole, protection against penetration of sharp and edged objects, metal-free, better protection against objects with a smaller diameter, 3 mm test nail. Applications (e.g.): as S2, risk of penetration by sharp / edged objects (e.g. workshop).

Advantages / properties (e.g.): toe cap, closed seat region, upper protects against water penetration and absorption, cleated outsole, protection against penetration of sharp and edged objects, metal-free, 4.5 mm test nail. Applications (e.g.): as S2, risk of penetration by sharp / edged objects (e.g. workshop).

Advantages / features (among others): toe cap, seat region, cleated outsole, protection against penetration of sharp and edged objects, water resistance of the shoe when assembled, metal-free, 3 mm test nail. Applications (e.g.): as S3S, water resistance (e.g. industry, construction or outdoor area).

Advantages / properties: voluntary additional requirement for cold insulation of sole complex. Applications (e.g.): workplaces with cold surroundings / surfaces (e.g. cold stores, winter service).

Advantages/Properties/Applications

Advantages / properties: voluntary additional requirement for heat insulation of sole complex. Applications (e.g.): workplaces with warm surroundings / surfaces (e.g. road construction, metal working).

Advantages / properties: voluntary additional requirement for resistance of outsole to hot contact (300° C). Applications (e.g.): workplaces with hot surfaces (e.g. tar work, road construction).

Advantages / properties: protection against penetration of sharp and edged objects (e.g. S1 P). Applications (e.g.): workplaces with risk of penetration by sharp / edged objects (e.g. nails, metal pieces).

Advantages / properties: protection against penetration of sharp and edged objects (e.g. S1 PL), metal-free, 4.5 mm test nail. Applications (e.g.): workplaces with risk of penetration by sharp / edged objects (e.g. nails, metal pieces).

Advantages / properties: protection against penetration of sharp and edged objects (e.g. S1 PL), metal-free, better protection against objects with a smaller diameter, 3 mm test nail. Applications (e.g.): workplaces with risk of penetration by sharp / edged objects (e.g. nails, metal pieces).

Advantages / properties: voluntary additional requirement for resistance to fuel oil. Applications (e.g.): workplaces where fuels are handled (e.g. industry, workshops, automotive sector).

Advantages / properties: voluntary additional requirement for toe cap abrasion. Applications (e.g.): workplaces in which safety shoes are subject to particular stress (e.g. construction sites).

Advantages / properties (e.g.): slip resistance of the outsole, which is determined and classified on the basis of two test situations (SRA: ceramic tiles with NaLS, SRB: steel floor with glycerine, SRC: SRA and SRB passed). Applications (e.g.): workplaces with risks from damp or greasy surfaces and floor coverings (e.g. scaffolding, construction, workshops, industrial kitchens, canteens).

Advantages / properties (e.g.): slip resistance of the outsole, which is determined on the basis of two test situations (ceramic tiles and NaLS and glycerine). Applications (e.g.): workplaces with risks from damp or greasy surfaces and floor coverings (e.g. scaffolding, construction, workshops, industrial kitchens, canteens).

Advantages / properties (e.g.): toe caps and perforation resistant midsoles of metal-free safety shoes are usually lighter and more flexible than safety shoes that contain metal and they are hardly

/ not thermally conductive. Metal-free perforation resistant midsoles also cover a larger area of the foot (insole), but are more influenced by the shape of sharp objects (e.g. diameter, geometry, sharpness). Perforation resistant metal midsoles are less influenced by the parameters mentioned above and therefore offer a particularly high level of protection. It should be noted here that, due to the design, only a smaller area of the foot can be protected. Applications (e.g.): workplaces with danger from edged / sharp

objects lying around (e.g. nails, metal parts) as well as danger from impacts or falling objects, at workplaces with the highest demands on the protective functions, we recommend the use of S3 safety shoes with steel midsole and steel toe cap (e.g. construction, outdoor work).

We answer your questions

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Phone: +49 2272 9060 800 | Email: info@nitras-safety.com

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