Source: Comparison between IEC 60439 and IEC 61439
): Voltage value to which dielectric tests and creepage distances are referred. Rated Short-Time Withstand Current ( Icwcap I sub c w end-sub
Under IEC 61439-1 and 2, the Original Manufacturer must verify the design using one or more of the following three equivalent methods: 1. Verification by Testing (Type Testing) iec 614391 and 2 pdf
In the US, ANSI; in the UK, BSI (which publishes as BS EN 61439-1/2); in Germany, DIN/VDE. These sell the identical IEC content in PDF format, sometimes with a national foreword.
Applying a high voltage over a short duration to verify insulation status. Source: Comparison between IEC 60439 and IEC 61439
series is the international standard for low-voltage switchgear and controlgear assemblies, replacing the older IEC 60439 series. While IEC 61439-1 establishes the foundation, it cannot be used for certification on its own; it must be used in conjunction with a product-specific part, such as IEC 61439-2. Gt-Engineering Core Parts of the Standard IEC 61439-1: General Rules
One of the most important structural changes introduced by the IEC 61439 series is the clear distinction between two types of manufacturers. This distinction dictates who is responsible for what during the engineering and production processes. These sell the identical IEC content in PDF
IEC 61439 is an extensive series of standards, each covering a specific type of assembly. The table below outlines the full series as of June 2026:
IEC 61439-2: Power Switchgear and Controlgear (PSC) Assemblies
The busbars, supports, and connections must withstand the immense thermal and mechanical stresses generated during a short circuit. Designers must verify the Rated Short-Time Withstand Current ( Icwcap I sub c w end-sub ) and the Peak Withstand Current ( Ipkcap I sub p k end-sub Dielectric Properties
The Complete Guide to IEC 61439-1 and -2: Standards for Low-Voltage Switchgear and Controlgear Assemblies