National Standards Bodies: 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.
Institution Subscriptions: Many universities, large engineering firms, and testing laboratories subscribe to standards databases like IECL (IEC Standards Collection) or Perinorm. If you work for such an organization, you can access the PDF for free via their internal network.
Preview Versions: The IEC website offers a red-line preview (comparing old vs. new editions) for free, but not the full PDF.
Warning: Do not risk using a counterfeit "iec 614391 and 2 pdf." If your switchgear causes a fire or arc flash, and investigators discover you used a pirated, outdated standard, your liability insurance may be voided.
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.
Searching for "IEC 61439-1 and -2 PDF" is just the first step. The real value lies in understanding and correctly applying the rules within those pages. The shift from IEC 60439 to 61439 closed dangerous loopholes and created a safer electrical world—but only if designers, builders, and inspectors use the current, legitimate version.
Final recommendations:
Do not rely on outdated free copies found through a quick web search. The small investment in the correct IEC 61439-1 and -2 PDF will pay for itself many times over in compliance, safety, and peace of mind.
Disclaimer: This article is for informational purposes. Always refer to the official IEC standards for legal and technical compliance. Standards are subject to updates and amendments.
Overview
IEC 61439-1 and IEC 61439-2 are international standards published by the International Electrotechnical Commission (IEC) that outline the requirements for low-voltage power distribution units (PDUs) and their associated socket outlets. These standards aim to ensure the safety and performance of PDUs and socket outlets used in various applications, including industrial, commercial, and residential settings.
IEC 61439-1: Low-voltage power distribution units (PDUs) iec 614391 and 2 pdf
IEC 61439-1 covers the requirements for PDUs, which are assemblies of electrical equipment used to distribute power to various loads. The standard covers aspects such as:
Key requirements for PDUs under IEC 61439-1 include:
IEC 61439-2: Socket outlets and their associated switches
IEC 61439-2 focuses on socket outlets and their associated switches used in PDUs. The standard covers:
Key requirements for socket outlets and switches under IEC 61439-2 include:
Key differences between IEC 61439-1 and IEC 61439-2
While both standards deal with low-voltage power distribution, the main difference lies in their focus areas:
Benefits of compliance
Compliance with IEC 61439-1 and IEC 61439-2 offers several benefits, including:
Conclusion
IEC 61439-1 and IEC 61439-2 are essential standards for ensuring the safety and performance of low-voltage power distribution units (PDUs) and their associated socket outlets. By understanding and complying with these standards, manufacturers, installers, and users can ensure the reliability and safety of electrical distribution systems. National Standards Bodies: In the US, ANSI; in
If you need the actual PDF versions, I can suggest some sources where you can download or purchase them:
The IEC 61439 series establishes international standards for low-voltage switchgear, replacing older 60439 standards with a focus on verified assemblies. Part 1 defines general rules, while Part 2 governs power assemblies, utilizing three methods (testing, calculation, or design rules) to verify performance requirements like temperature rise and short-circuit withstand. For technical details, see the Legrand White Paper www.mchip.net IEC 61439-1 & 2: Low-Voltage Standards | PDF - Scribd Oct 3, 2561 BE —
The full text of IEC 61439-1 and IEC 61439-2 is protected by copyright and is primarily available for purchase through the IEC Webstore. These standards define the requirements for low-voltage switchgear and controlgear assemblies. Accessing the Full Text and Previews
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
The IEC 61439 series is the definitive international standard for low-voltage switchgear and controlgear assemblies. Since July 2020, Edition 3 has replaced previous versions, introducing stricter design and routine verification requirements to ensure global safety and performance. Core Parts of the Standard
IEC 61439-1 (General Rules): This part provides the foundational definitions and technical characteristics applicable to all low-voltage assemblies. It covers ambient conditions, construction requirements, and verification procedures.
IEC 61439-2 (Power Switchgear Assemblies): As a specific product standard, it defines the requirements for power switchgear and controlgear assemblies (PSC-assemblies). Key Resources and PDF Guides
Professional organizations provide comprehensive workbooks and specifier guides to help manufacturers and engineers implement these standards:
ABB Practice Workbook: A detailed IEC 61439 Practical Guide that covers electrical systems, protection against shock, and installation checklists.
Legrand White Paper: This Construction and Certification Guide explains the transition to Edition 3 and the specific requirements for power switchgear assemblies.
Hager Standard Guide: An Overview of IEC 61439 discussing the responsibilities of stakeholders and the shift from "type testing" to "design verification". Preview Versions: The IEC website offers a red-line
VDE Verlag Preview: A Technical Preview of IEC 61439-1:2020 which includes the table of contents and redline versions showing recent changes. Critical Design Verifications
To achieve compliance, assemblies must undergo rigorous verification in three main areas: IEC-614391-1 &2 - For Switchgears - GMA-US - LR - Scribd
IEC 61439-1 and IEC 61439-2 are the international standards governing low-voltage switchgear and controlgear assemblies (up to 1,000 V AC or 1,500 V DC). They replaced the older IEC 60439 series to provide a more rigorous framework for safety and performance. Key Components of the Standard
IEC 61439-1 (General Rules): This part provides the common definitions, service conditions, and technical requirements applicable to all types of assemblies. It is not a standalone product standard and must be used in conjunction with a specific product part.
IEC 61439-2 (Power Switchgear and Controlgear Assemblies): This is the specific product standard for "PSC-assemblies," such as main distribution boards, motor control centers (MCCs), and sub-distribution panels. Major Shifts from IEC 60439
Both parts (1 & 2) eliminate the old concept of "partially type tested assemblies" (PTTA). Now, every assembly must be design verified – by test, calculation, or comparison with a verified reference design.
What this means for you: You cannot simply assemble a box with a circuit breaker and claim 61439 compliance. The combination of enclosure, busbars, and devices must be verified as a system.
When you download the IEC 61439-1 and -2 PDF, you will notice a similar structure, but critical distinctions matter for your application.
| Feature | IEC 61439-1 (General Rules) | IEC 61439-2 (Power Assemblies) | | :--- | :--- | :--- | | Scope | All LV assemblies (distribution boards, busbar trunking, marinas, etc.) | Specific to power switchgear (main LV switchboards, motor control centers) | | Rated Voltage | Up to 1,000 V AC / 1,500 V DC | Typically up to 1,000 V AC (power frequency) | | Rated current | No lower limit | Usually above 100 A, but not exclusive | | Short-circuit withstand | General requirements up to 100 kA (typical) | Detailed requirements up to very high levels (e.g., 150 kA) | | Forms of separation | Defined in Part 1 (Form 1 to Form 4) | Referenced from Part 1, but with practical clarifications for power circuits | | Temperature rise limits | General limits (e.g., 70 K for terminals) | Same numerical limits, but with stricter attention to power dissipating components (busbars, circuit breakers) | | Internal arcing fault protection | Optional (Annex Z) | More commonly required (Arc Fault Containment) |
Practical example: If you are building a small lighting distribution board (e.g., 160A), IEC 61439-1 + a specific Part (Part 3 for distribution boards) is used. If you are building a 4,000A main switchboard for a factory, you need IEC 61439-1 and -2 PDF together.