Iec 614391 And 2 Pdf !full! May 2026

The IEC 61439 series is the international standard governing low-voltage switchgear and controlgear assemblies, replacing the older IEC 60439 series. The standard is currently in its third edition (released in 2020) and is essential for ensuring the safety and reliability of electrical panels in industrial and commercial environments. Core Structure of Parts 1 and 2

IEC 61439-1 (General Rules): This part provides the foundational definitions, service conditions, and technical requirements applicable to all types of assemblies. It cannot be used alone to certify an assembly; it must be used in conjunction with a product-specific part.

IEC 61439-2 (Power Switchgear and Controlgear Assemblies): This is the specific product standard for "PSC-assemblies" (often called switchboards or panelboards). It details the construction and performance criteria for power distribution systems. Key Technical Requirements

The standard emphasizes safety through rigorous verification methods that replace the old "Type Tested" (TTA) and "Partially Type Tested" (PTTA) categories. Requirement Area Key Specifications Temperature Rise

Limits upper-temperature reached by components to ensure longevity and safety. Short-Circuit Strength

Verification that the assembly can withstand high fault currents without physical or electrical failure. Dielectric Properties iec 614391 and 2 pdf

Ensures insulation can handle operating voltages and lightning impulses. Clearance & Creepage

Defines minimum distances between conductive parts to prevent electrical arcing. Internal Separation

Uses barriers and partitions (Forms 1–4) to protect against contact with live parts. Overview of IEC 61439-1 and IEC 61439-2 - UL Solutions

1. Introduction

The IEC 61439 series is the internationally recognized benchmark for the design, verification, and performance of Low-Voltage Switchgear and Controlgear Assemblies (ASSEMBLIES)—commonly known as switchboards, distribution boards, and motor control centers (MCCs). These standards replaced the earlier IEC 60439 series in 2009, introducing a fundamental shift from type-tested to design-verified assemblies.

IEC 61439-1:2020 – General Rules: The "umbrella" standard defining common definitions, service conditions, construction requirements, and verification methods applicable to all types of ASSEMBLIES.
IEC 61439-2:2020 – Power Switchgear and Controlgear Assemblies: Specific requirements for power switchgear (e.g., main distribution boards) intended for rated voltages up to 1,000 V AC or 1,500 V DC.

Where to buy the official PDFs:

IEC Webstore (webstore.iec.ch) – Official source, but expensive.
National committee shops (e.g., ANSI in the US, BSI in the UK, DIN in Germany) – Sometimes offer multi-user licenses.
Engineering standards aggregators (IHS Markit, Techstreet) – Provide subscription-based access.
Company libraries – Many large engineering firms have enterprise licenses. Check your internal document portal.

The Bottom Line

IEC 61439-1 and 61439-2 are not optional guidelines – they are mandatory for CE marking, many national electrical regulations (e.g., UK’s BS 7671 references them), and safe low-voltage switchgear. The IEC 61439 series is the international standard

Do not rely on random PDFs from the internet. Purchase the official documents from your national standards body or the IEC webstore. The cost is small compared to the risk of an arc flash, failed audit, or non-compliant installation.

Need only a summary? Look for application guides (e.g., from ABB, Schneider Electric, Eaton) that explain the standards in practical terms – but always keep the official PDFs for legal and technical reference.

Have a specific question about temperature rise verification or forms of separation under 61439-2? Leave a comment or contact a certified testing laboratory.

It seems you're looking for IEC 61439-1 and IEC 61439-2 (likely a typo for "614391").

These are the core standards for low-voltage switchgear and controlgear assemblies. IEC 61439-1:2020 – General Rules : The "umbrella"

IEC 61439-1: General rules for all types of assemblies.
IEC 61439-2: Specific requirements for power switchgear and controlgear assemblies (e.g., main distribution boards).

Important notes:

I cannot provide or link to copyrighted PDFs directly.
You can buy official PDFs from the IEC Webstore or national bodies (e.g., ANSI, BSI, DIN, SCC).
Free access may be available via some university libraries or national standards portals (e.g., some countries provide public access to adopted IEC standards).

Is the "IEC 61439-1 and 2 PDF" free?

No. The International Electrotechnical Commission (IEC) holds copyright. Free PDFs found on third-party websites (e.g., Scribd, academia.edu, random engineering forums) are almost always unofficial, outdated, or pirated.

Part 2: Power Switchgear and Controlgear Assemblies (IEC 61439-2)

IEC 61439-2 builds directly on Part 1. It adds specific requirements for power switchgear assemblies – the main distribution boards feeding motors, transformers, and large loads.

What makes Part 2 different?

Focus on high-current systems: Rated current often above 400 A, up to several kA.
Specific construction rules: Requirements for drawout units, removable circuit breakers, and main busbar systems.
Additional tests: Higher short-circuit ratings, mechanical endurance for drawout mechanisms, and stricter temperature rise limits for high-density layouts.
Coordination with protective devices: How the assembly interacts with fuses, MCCBs, and ACBs.

Simple rule: Use Part 1 + Part 2 for main switchboards, distribution panels in industrial plants, and motor control centers (MCCs). Use other parts (Part 3, Part 4, etc.) for specific applications like DBs for construction sites or public networks.