Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


Electrical naming standards in IEC

Electrical naming standards in IEC

Electrical naming standards in IEC


Does anyone know if there are any specific IEC standards which has guidelines for assigning tags/names to electrical symbols?
For example, CB for circuit breaker, CR for relay contact, XF for transformer etc.?

I referred IEC 61082 & IEC 60617 and couldn't find any specific information although IEC 60617 has a letter assigned to each function class.


RE: Electrical naming standards in IEC

IEC 81346, which supercedes IEC 61346, is the official reference. Unfortunately it isn't a very definitive standard and leaves plenty room for interpretation, or just plain making-it-up-as-you-go-along.

Moeller have made some effort to define the letter designators for electrical components on pages 10-3 and 10-4 of this link. Their list seems to be fairly close to what I'm familiar with.

RE: Electrical naming standards in IEC

Thanks Scotty.

That linked helped.

RE: Electrical naming standards in IEC

Star for ScottyUK, I went through the same issue about a year ago, and came to the same conclusion, although I wasn't able to find the Moeller reference at the time, which would have made it much easier.

RE: Electrical naming standards in IEC

Thanks gents. blush

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close