IEC 61439-1 and IEC 61439-2 are the international standards that govern the safety and performance of low-voltage switchgear and controlgear assemblies. Together, they replace the older IEC 60439 series to provide a more rigorous and structured framework for electrical installations. Core Functions of Parts 1 and 2
If you are looking for specific requirements, these documents typically cover:
While the complete official text requires a license, you can access substantial sections, previews, and practical guides through the following sources: IEC 61439-2 - Legrand Group iec 614391 and 2 pdf
One of the most significant reasons to study the IEC 61439-1 and 2 PDF is to understand the Verification process. The standard identifies three equivalent methods to verify a design:
These two parts work together as a "parent-child" pair. You cannot use Part 2 without referring back to the general rules in Part 1 . IEC 61439-1 General Rules IEC 61439-1 and IEC 61439-2 are the international
Section 8: Constructional requirements (corrosion resistance, UV protection, and lifting).
, highlighting the responsibilities of the original manufacturer versus the assembly builder. Hager Guide : A detailed Guide to the New IEC 61439 Standard that explains the transition from the old 60439 series. Schneider Electric Blog : A useful overview of what the standards mean for equipment specifications , particularly the removal of the old TTA/PTTA categories. Major Changes to Note The standard identifies three equivalent methods to verify
Let’s say you are designing a low-voltage main switchboard (MCC) for a factory. You have finally obtained the IEC 61439-1 and 2 PDF files. Here is your workflow:
IEC 61439-1 is the foundation. It defines the common rules, definitions, and service conditions for all low-voltage switchgear assemblies.