Footwear for professional use according to EN ISO 20345: 2011 is marked by an "S" (from English Safety = Safety) as Safety Footwear. The so-called "basic" shoe is marked with the letters "SB" (S = Security - "B" = Base). This shoe must have the following minimum requirements: • height of the upper • tip (minimum length, minimum support base) • upper in "crust" leather, microfibre and similar • front lining • insole • sole in any type of material, can be smooth • the upper, in the lower shoe, can be opened in the heel area. In the "SB" Footwear the following requirements are never understood if not specified in detail: • anti-static • energy absorption of the heel • dynamic waterproofing of the upper • sole with dowels • back lining • water-repellent upper • foil or anti-friction fabric. The following is the meaning of the stamping that you can find on the shoe.

Conformity marking Name of the manufacturer Date of production
CE U-POWER 01/2018
European standard Protection class Sliding resistance requirement Additional requirements Product code
EN ISO 20345:2011 S3 SRC HRO HI 000000 - Reflex

The year of application of the CE marking and the identification number of the laboratory which certified its suitability have been deleted with the D.L. of 02/01/1997 n ° 10. The identification number of the laboratory must be highlighted on the usage note. - From 01/06/98 with the entry into force of EN 345: 1 the indication of the Country of the Producer is eliminated.

In addition to the Basic Requirements, others are provided, as indicated in the following table:

PROTECTION CLASS SYMBOL EN ISO 20345:2011 EN ISO 20347:2012 EN ISO 20345:2011 EN ISO 20347:2012 Minimum values ​​required
SB S1 S2 S3 0B 01 02 03 S4 S5 04 05
Closed heel area 0 0
Shock resistant to 200J
A Antistatic footwear 0 0 between 1x10 5 Ω and 1x10 9 Ω
E Heel area energy absorption 0 0 ≥ 20 Joule
FO ex ORO Walking sole surface resistant to hydrocarbons 0 0 0 0 0 0 0 always present by EN ISO 20345:2011 and by EN ISO 20346:2011 but to be specified when required by EN ISO 20347:2012
WRU Water resistant upper material 0 0 > 60 mins - Absorbance < 30%
P Pierce resistant midsole 0 0 0 0 0 0 ≥ 1100 N.
CI Thermal cold insulation of the sole 0 0 0 0 0 0 0 0 0 0 0 0 by temperature < 10°C
HI Thermal heat insulation of the sole 0 0 0 0 0 0 0 0 0 0 0 0 by temperature > 22°C
C Thermal heat insulation of the sole 0 0 < 1x105 OHM
HRO Walking sole surface heat resistance to temperature on contact 0 0 0 0 0 0 0 0 0 0 0 0
AN Ankle protection 0 0 0 0 0 0 0 0 0 0 0 0 average value > 20kN

Electrically insulating shoe (Dielectric) 0 0 Class 00 or Class 0 - CEI EN 50321 standard
WR Water resistant shoes 0 0 0 0 0 0 0 0 no penetration within first 15 mins. After 100 flex should non penetrate more than 3 square Cm
M Shoe with metatarsal protection 0 0 0 0 0 0 height after shock > 40 mm (tg 42)
WG Protection for small splashes of molten metal for welding operations
CR Cut resistant upper 0 0 0 0 0 0 l factor > 2,5
SRC (SRA + SRB) Anti-slip requirement
RS Quick extraction (symbol U-Power)

= = Required requirement for the indicated category
0 = = Optional requirement added to the mandatory ones, if marked on the marking
= = Not mandatory requirement, check footwear stamping

Below the sole the following information is indicated: - fit. On the bellows or the tongue of the shoe are affixed: - manufacturer's mark - the item code - the month and year of manufacture - the following markings: see conformity marking CE

Safety cateogires and symbols used
SB BASIC requirements
S1/01 BASIC requirements closed back (also low footwear)
FO resistance to hydrocarbons
heel energy absorption capacity
S2/02 BASE + S1 requirements integrated by: dynamic impermeability of the upper use material
S3/03 BASE + S2 requirements integrated by: anti-foil lamina
sole with dowels
S4/04 Basic requirements integrated by: antistatic
Heel area energy absorption
FO resistance to hydrocarbons
S5 S4 requirements integrated by: anti-foil lamina
sole with dowels
SYMBOLS USED European standards requirements
Test floor: ceramics
Lubricant: water + detergent
≥ 0,32 Flat
≥ 0,28 Heel (contact angle 7°)
Test floor: steel
Lubricant: glycerin
≥ 0,18 Flat
≥ 0,13 Heel (contact angle 7°)
SRC (SRA+SRB) Both tests methods applied
These shoes have been designed to allow continuous and controlled dissipation within safety values ​​of the electrostatic charges present on the operator's body in order to protect electronic devices sensitive to electrostatic phenomena. The recommended "EPA" resistance to ground is ≤ 3.5x107Ω. Considering that the measurements are made with the footwear worn by the user, the values ​​obtained can vary considerably from person to person and according to environmental conditions, since the electrical resistance of the human body is variable.
EN ISO 20346:2011

Protective footwear under EN ISO 20346: 2011 are called "Protective footwear". They are essentially identical to safety footwear. The only differences are the following:

  • Impact protection tip with 100 J energy and 10 KN compression
  • they are marked with "P" (from the English word "protective") instead of the "S" (Safety shoes).

N.B.: use in all workplaces where 100 J protection is sufficient

EN ISO 20347:2012

Work shoes under EN ISO 20347: 2012 are called "work shoes" or "professional". They are essentially identical to the footwear analyzed previously. They differ from not having a protection tip and the marking is done by replacing the letters "S" and "P" with "O" (from English "occupational" = work) and therefore identified with 01, 02, 03. The resistance to non-obligatory FO hydrocarbons must be indicated on the marking.


EN ISO 20349:2010: Small splashes of molten metal like those produced during welding operations and related processes.
EN ISO 20344:2011: Test methodology and general requirements.
EN ISO 20345:2011: Safety shoe specifications with 200 J toe resistance.
EN ISO 20346:2011: Specifications of protective footwear with 100 J toe resistance.
EN ISO 20347:2012: Specifications of "Work footwear" or "professional". No specific resistance of the tip.
UNI 11583:2015: The UNI 11583: 2015 compliant calibres meet the requirements of the UNI 11583: 2015 standard which specifies the requirements for safety, protection and work footwear for professional use for work on inclined roofs.

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