BS EN IEC 61643-01:2025+A11:2025 - Low-voltage Surge Protective Devices

Introducing the BS EN IEC 61643-01:2025+A11:2025, the definitive standard for low-voltage surge protective devices. This comprehensive document outlines the general requirements and test methods essential for ensuring the safety and reliability of surge protective devices used in low-voltage electrical installations.

Overview

Released on April 30, 2025, this standard is a crucial resource for manufacturers, engineers, and professionals involved in the design, testing, and implementation of surge protective devices. With a total of 132 pages, it provides in-depth guidance and specifications to meet the highest industry standards.

Key Features

• Standard Number: BS EN IEC 61643-01:2025+A11:2025
• ISBN: 978 0 539 05505 4
• Status: Standard

Why Choose This Standard?

The BS EN IEC 61643-01:2025+A11:2025 standard is meticulously crafted to address the evolving needs of the electrical industry. It ensures that surge protective devices are designed and tested to withstand the challenges posed by electrical surges, thereby safeguarding equipment and infrastructure.

By adhering to this standard, manufacturers can guarantee that their products meet the rigorous safety and performance criteria required in today's market. This not only enhances product reliability but also boosts consumer confidence and satisfaction.

Comprehensive Coverage

This standard covers a wide range of topics, including:

• General requirements for low-voltage surge protective devices
• Detailed test methods to evaluate device performance
• Guidelines for installation and maintenance
• Safety considerations and compliance requirements

Who Should Use This Standard?

The BS EN IEC 61643-01:2025+A11:2025 is an invaluable resource for:

• Manufacturers of surge protective devices
• Electrical engineers and designers
• Quality assurance professionals
• Compliance officers
• Technical consultants

Enhance Your Knowledge and Expertise

Staying updated with the latest standards is crucial for maintaining a competitive edge in the electrical industry. The BS EN IEC 61643-01:2025+A11:2025 provides the knowledge and insights needed to design and implement effective surge protection solutions.

By integrating the guidelines and test methods outlined in this standard, professionals can ensure that their products and systems are equipped to handle electrical surges, thereby minimizing downtime and protecting valuable assets.

Conclusion

The BS EN IEC 61643-01:2025+A11:2025 is more than just a standard; it is a comprehensive guide to achieving excellence in surge protection. Whether you are a manufacturer, engineer, or consultant, this document is an essential tool for ensuring the safety, reliability, and performance of low-voltage surge protective devices.

Invest in the future of your products and services by embracing the standards that set the benchmark for quality and safety in the electrical industry.

BS EN IEC 61643-01:2025+A11:2025

This standard BS EN IEC 61643-01:2025+A11:2025 Low-voltage surge protective devices is classified in these ICS categories:

• 29.240.10 Substations. Surge arresters
• 29.240.01 Power transmission and distribution networks in general

IEC 61643-01: 2024 contains the common requirements for all SPDs. This document is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages, hereafter referred to as Surge Protective Devices (SPDs). SPDs are intended to be connected to circuits or equipment rated up to 1 000 V AC (RMS) or 1 500 V DC. Performance and safety requirements, tests and ratings are specified in this document. SPDs contain at least one nonlinear component and are intended to limit surge voltages and divert surge currents. This document, together with IEC 61643-11:— (second edition), cancels and replaces the first edition of IEC 61643-11 published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the first edition of IEC 61643-11: a) Clarification on test application either to a complete SPD, to a "mode of protection", or to a complete "SPD assembly"; b) Additional measurement of voltage protection level on "combined modes of protection" between live conductors and PE (see new Annex F); c) Additional duty test for T1 SPD and T2 SPD with follow current to check for increased follow current at lower impulse current amplitude (see 9.3.5.5); d) Modified and amended short circuit current test requirements to better cover up-to-date internal SPD disconnector technologies (see 9.3.6.3); e) Improved dielectric test requirements for the SPD’s main circuits and added dielectric test requirements for "electrically separated circuits" (see 9.3.7 and 9.3.8); f) Additional clearance requirements for "electrically separated circuits" (see 9.4.4); g) Additional information and details for SPDs for DC installations.