Cyber Monday Deal💥

Save 20% with a coupon CYBM20 on PRO Membership Plan and 30% on courses at EEP Academy! Learn from experienced engineers!

Home / Download Center / Electrical Engineering Books and Technical Guides / Power substation guides / IEC 61439 standard for low voltage switchgear and controlgear assemblies

Introduction to IEC 61439

IEC 60439, the standard for low-voltage switchgear and controlgear assemblies, was under restructuring from the last decade. The new series of IEC 61439 standards were published in January 2009. This standard has brought considerable clarity in technical interpretation.

IEC 61439 standard for low voltage switchgear and controlgear assemblies
IEC 61439 standard for low voltage switchgear and controlgear assemblies (on photo: MNS unit substation transformer busbar connections; credit:

IEC 61439 standard follows the philosophy of IEC 60947 series i.e. IEC 61439-1 is ‘General Rules’ standard to be referred to by subsidiary product parts of IEC 61439 series. The IEC 60439 standards were ambiguous about how to assess compliance of partially type tested assemblies.

As a result manufacturers and testing bodies often treated partially type-tested assemblies differently.

One of the main features of IEC 61439-1 is that the discrimination between Type Tested Assemblies (TTA) and Partially Type Tested Assemblies (PTTA) has been eliminated by the verification approach.

The three different but equivalent types of verification methods are introduced and these are:

  1. Verification by Testing
  2. Verification by Calculation/Measurement
  3. Verification by Design rules

The requirements regarding short circuit performance, temperature rise, dielectric properties and rated diversity factor have been covered in more detail.

Title:Introduction to IEC 61439 – A new standard on Switchgear and Controlgear Assemblies
Size:1.6 MB
Download:Right here | Video Courses | Membership | Download Updates
Introduction to IEC 61439 - A new standard on Switchgear and Controlgear Assemblies
Introduction to IEC 61439 – A new standard on Switchgear and Controlgear Assemblies

Premium Membership

Get access to premium HV/MV/LV technical articles, advanced electrical engineering guides, papers, and much more! It will help you to shape up your technical skills in your everyday life as an electrical engineer.
Cyber Monday Deal 💥 - Save 20% on Pro Membership Plan and 30% on courses at EEP Academy with a coupon CYBM20

More Information


  1. Jason kan
    Aug 29, 2022

    Can anybody advise for this request by our customer.
    He wanted a distribution board 300A 50KA 1sec type test board.
    I don’t know about type board requirements.

    Thank You

  2. Nutan Changale
    Jul 25, 2022

    Hi sir,

    I am looking for IEC 61439-2:2020 rules details for control panel.

  3. Sachin Singh
    Feb 08, 2022


    I am looking for I.E.C 61439-1 General rules to see if my automation panel complies

    Thank you

    Feb 01, 2022

    HI, we are panel manufacturer, and regular doing Panel Works, Automation etc, for our company we required IEC61439 CERTIFICATE, HOW TO GO AHEAD WITH THIS

    • Gautam Shukla
      Feb 19, 2022

      We are providing technical consultancy for design and engineering of panel to be tested in laboratory as per IEC 61439. Do contact on given email ID.

      • Rudranarayan Satapathy
        May 05, 2022

        Please share your e mail id & contact details for further discussion.

    • Tula Srinivas
      Jul 07, 2022

      Its a type tested assemblies.
      You have prototype test certificates only once.
      You have to submit the same certificates to any of your customer.
      Every time you will not get the certificates from CPRI.

    Dec 03, 2021

    kindly send detail technical of ICE 61439

  6. Gabriel
    Apr 27, 2021

    Dear instructor, can you send me please the standards IEC 61439 from 1 to 7, I’ll appreciate it.

  7. Myint Maung
    Nov 16, 2020

    Thanks for information

  8. Sameera
    Oct 13, 2020

    Can any one share the IEC 61439 including all parts?

    • Av selvan
      Apr 27, 2021

      can any one send me test procedure or iec 61439

      • Tula Srinivas
        Jul 07, 2022

        Dear its a type testing assembly at CPRI, banglore.
        To update you its very simple, you can download IEC from online, otherwise its SOP at CPRI banglore.

  9. vinod thangappa
    Aug 05, 2020

    Hi to all,

    I need to know about which standard to be followed for Power/control panel wiring refer to IEC derivatives.

    • Tula Srinivas
      Jul 07, 2022

      Referring to the IEC60947 control panel manufacturing standards, you should follow the wiring practices.
      Aside, wiring standards for internal control panel to be followed as IS standards too.

  10. Sameera
    Jun 03, 2020

    Hi Edward,

    I am an electrical consultant in Sri Lanka. Can you please send me IEC 61439 standard all parts including busbar trunking.

    Thank you,

  11. Mangesh Dhepe
    May 12, 2020

    I want Electrical Panel Checklist Sample… Anyone Can Help Me ??

  12. Rajeev Pandey
    Apr 27, 2020

    यह हमारे Technical Improvement के लिए अच्छा Portal है.। मैं इस Electrical Engineering Portal को.10 में से 10 नंबर दे रहा हूँ।
    राजीव पांडेय
    Electrical Engineer (Maintenance)

  13. ศิริพร พิทักษ์กุล
    Jun 10, 2019

    Thank you very much.

  14. mohamed
    Dec 14, 2017

    thank you

  15. wc_foronda
    Oct 17, 2013

    problem with file format, can’t open file after download..

Leave a Comment

Tell us what you're thinking. We care about your opinion! Please keep in mind that comments are moderated and rel="nofollow" is in use. So, please do not use a spammy keyword or a domain as your name, or it will be deleted. Let's have a professional and meaningful conversation instead. Thanks for dropping by!

  ⁄  two  =  four

Learn How to Design Power Systems

Learn to design LV/MV/HV power systems through professional video courses. Lifetime access. Enjoy learning!

Subscribe to Weekly Newsletter

Subscribe to our Weekly Digest newsletter and receive free updates on new technical articles, video courses and guides (PDF).
EEP Academy Hand-Crafted Courses
ETAP technical webinars