What Does prEN Mean? Draft Standards and Placeholder References

prEN means draft European Standard. It identifies a document under development, rather than a published EN. CEN and CENELEC distinguish draft standards (prENs) from European Standards (ENs).

Does “prEN 50XXX” identify a particular standard?

Not on its own. “50XXX” is a placeholder-style reference, so it cannot establish a document's technical subject or requirements without its project context. Such references can appear in genuine work programmes; they should not be mistaken for a uniquely identified published standard.

The specific catalogue example

The Genorma record linked by this article describes a project to revise DIN 47624:1980-04 concerning plastic clamping closures for telecommunication cables with metallic conductors and optical fibres. The indexed catalogue record identifies the project as abandoned, with deletion dated 7 July 2000. It should not be presented as an upcoming standard or a new binding requirement.

How to verify a draft reference

  • Find the full title and official project record.
  • Check the responsible committee and project identifier.
  • Confirm the draft date and current development stage.
  • Check whether a final EN has since been published or the project has been abandoned.

The CEN-CENELEC development overview explains drafting, public enquiry, approval and publication. Draft wording may change during this process.

Use an identified current draft to follow technical developments or contribute comments. An incomplete reference is not a mandatory product requirement or evidence that a product complies.

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