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.
The panel builder constructs the panel according to the original manufacturer's strict instructions, adding specific breakers, meters, and wiring.
The end-user or consulting engineer defines the installation environment, electrical characteristics, and operational requirements. iec 614391 and 2 pdf
) : The maximum current the assembly can handle continuously without exceeding temperature rise limits. Rated Short-Time Withstand Current ( Icwcap I sub c w end-sub
Internal barriers (Form 1 to 4b) to protect personnel and equipment. To help you apply these standards to your specific project: Current rating of the assembly? (e.g., 630A, 2500A) One of the most important structural changes introduced
: Verifying a minimum resistance threshold using a megohmmeter (typically 500V DC testing).
This part applies to power switchgear and controlgear assemblies (often abbreviated as PSC-Assemblies). These are assemblies used to distribute and control electrical energy in industrial, commercial, and similar applications, typically where rated voltages do not exceed 1000 V AC or 1500 V DC. The end-user or consulting engineer defines the installation
The original manufacturer tests the modular system architecture to prove it meets the specified requirements of IEC 61439-1 & -2.
: Verification that the enclosure prevents contact with live parts and keeps out water/dust.
Defines verification requirements for all low-voltage switchgear and controlgear assemblies.
Organizations like BSI (BS EN 61439 in the UK), DIN (Germany), or Bureau of Indian Standards (BIS) sell localized versions containing identical technical texts.