Construction Products Regulation

Fire safety for buildings

Scope of the CPR

The Construction Product Regulation (CPR) is intended to ensure the free circulation of construction product in the EU removing trade barriers eventually created by technical specification. This is achieved by providing a “common technical language", offering uniform assessment methods for the performance of construction products throughout the European Economic Area.

These assessment methods are compiled in harmonised technical specifications. This common technical language is to be applied by all stakeholders in the construction industry (regulatory authorities, manufacturers, distributors, end users ...)

  • The regulatory authorities of Member States when specifying requirements for construction works and by
  • the manufacturers when declaring the performance of their products, and by
  • the distributors when making the products available to their customers and by
  • their users (architects, engineers, constructors, etc.) when choosing the products that are best suited for their intended use in construction works.

Cables concerned by the regulation are those intended to be used for the supply of electricity and communications permanently installed in buildings and other civil engineering works.

Note that at this point the harmonised standard for fire resistant cables is still under development. This means that they are not yet subject to the CPR requirements and that their entire fire behaviour (fire reaction and fire resistance) is still to be assessed against the current national standards.

Construction products regulation classification

The Euroclass Table defines seven classes (Aca, B1ca, B2ca, Cca, Dca, Eca and Fca) based on their fire reaction, such as heat release and flame spread/propagation.

In this classification, heat release and flame spread/propagation are the main classification criteria, but a series of additional criteria is also defined. Those additional criteria apply only to classes B1ca, B2ca, Cca and Dca and they regard:

Related document
pdf - 972.5 kB

Nexans Guidance Note on Construction Products Regulation

Criteria Definitions


Smoke opacity: s1, s1a, s1b, s2 and s3 – s1 corresponding to the best performance and s3 the least.


d0, d1 and d2 – d0 corresponding to the best performance and d2 the least


a1, a2, a3 during fire – a1 corresponding to the best performance and a3 the least

The smoke classes s1a and s1b reflect requirements that have been in use for a long time in Europe. The acidity classes do also have a background in long traditions.

Are you aware of your responsibilities ?


  • Regulate the fire performance of cables using the CPR Classification
  • Survey the market for correct application of the Regulation



  • Must prescribe the level of fire performance required using the CPR classification
  • Evaluate eventual specific risks, which means understanding the level of fire performances of the cable



  • Ensure that they place on the market only cables which follow the requirements of the CPR
  • Be sure that the product bears the CE marking and is accompanied by the documents required by CPR



  • Follow national installation standards
  • Only install CPR certified cables of the appropriate performance


Nexans CPR tutorial

Educate yourself on the CPR with Nexans' tutorial

Nexans tutorial for Construction products regulation

CPR awareness in your country


of European installers agree that fire safety is important, that CPR can contribute to it, and that non-conforming product introduces risk;


of European installers are confident that they can apply the CPR correctly in their work;


Of European installers are confident about the details of the various CPR classes, DoPs, etc.


But ... about half feel they often have to compromise safety against cost.

Fire safety cables for CPR
All you need to know about Construction Products Regulation (CPR)

All Nexans’ cables for building applications are CE marked according with the CPR. The family Declaration of Performance are available on the Nexans Tracker application. Please refer to local websites to get information about the required level of performance.

Refer to the Nexans CPR FAQ page for further information on the CPR
Other information available at


Questions and answers about the Construction Products Regulation

Contact us

Topics on which you wish to get more informations:

Required fields*

Please check your entry and try again.

An email address must contain a single @

Personal data protector

You have the right to object to the processing of your personal data and/or their use for direct marketing or commercial purposes

Thank you!

Thanks for contacting us. We will be in touch with you shortly.


An error occurred. Please try again.