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>BSI Standards >29 ELECTRICAL ENGINEERING>29.120 Electrical accessories>29.120.50 Fuses and other overcurrent protection devices>BS EN IEC 61643-21:2026 Low voltage surge protective devices Surge protective devices connected to telecommunications and signalling networks. Requirements and test methods
immediate downloadReleased: 2026-01-14
BS EN IEC 61643-21:2026 Low voltage surge protective devices Surge protective devices connected to telecommunications and signalling networks. Requirements and test methods

BS EN IEC 61643-21:2026

Low voltage surge protective devices Surge protective devices connected to telecommunications and signalling networks. Requirements and test methods

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Standard number:BS EN IEC 61643-21:2026
Pages:92
Released:2026-01-14
ISBN:978 0 539 18177 7
Status:Standard

BS EN IEC 61643-21:2026 - Low Voltage Surge Protective Devices

Introducing the BS EN IEC 61643-21:2026, a comprehensive standard that sets the benchmark for low voltage surge protective devices connected to telecommunications and signalling networks. This essential document outlines the requirements and test methods necessary to ensure the safety and reliability of these critical components in modern communication infrastructures.

Key Features of BS EN IEC 61643-21:2026

  • Standard Number: BS EN IEC 61643-21:2026
  • Pages: 92
  • Release Date: January 14, 2026
  • ISBN: 978 0 539 18177 7
  • Status: Standard

Comprehensive Coverage

This standard provides an in-depth exploration of surge protective devices (SPDs) specifically designed for low voltage applications within telecommunications and signalling networks. With 92 pages of detailed information, it serves as an invaluable resource for engineers, designers, and professionals involved in the development and maintenance of these systems.

Ensuring Safety and Reliability

The BS EN IEC 61643-21:2026 standard is meticulously crafted to address the unique challenges posed by surge events in telecommunications and signalling networks. By adhering to the requirements and test methods outlined in this document, organizations can significantly enhance the safety and reliability of their systems, protecting both infrastructure and data from the potentially devastating effects of electrical surges.

Why Choose BS EN IEC 61643-21:2026?

Choosing the BS EN IEC 61643-21:2026 standard means opting for a document that is at the forefront of industry best practices. It is designed to help professionals navigate the complexities of surge protection in telecommunications and signalling networks, ensuring that they are equipped with the knowledge and tools necessary to implement effective solutions.

Benefits of Implementing This Standard

  • Enhanced Protection: Implementing the guidelines in this standard helps safeguard critical telecommunications and signalling infrastructure from surge-related damage.
  • Compliance Assurance: Adhering to this standard ensures compliance with international safety and performance benchmarks, facilitating smoother operations and regulatory approvals.
  • Cost Efficiency: By preventing damage and downtime, organizations can save on repair and replacement costs, making this standard a cost-effective investment.
  • Future-Proofing: Stay ahead of the curve with a standard that reflects the latest advancements and trends in surge protection technology.

Who Should Use This Standard?

The BS EN IEC 61643-21:2026 standard is ideal for a wide range of professionals and organizations, including:

  • Telecommunications Engineers
  • Network Designers
  • Infrastructure Managers
  • Compliance Officers
  • Safety Inspectors
  • Technical Consultants

Stay Ahead with BS EN IEC 61643-21:2026

In an era where telecommunications and signalling networks are the backbone of global communication, ensuring their protection against electrical surges is paramount. The BS EN IEC 61643-21:2026 standard provides the guidance and assurance needed to maintain robust and reliable systems.

With its release on January 14, 2026, this standard represents the latest in a series of updates that reflect ongoing advancements in technology and industry practices. By integrating this standard into your operations, you are not only enhancing your current systems but also preparing for future challenges and opportunities.

Conclusion

The BS EN IEC 61643-21:2026 is more than just a standard; it is a strategic tool for ensuring the longevity and efficiency of telecommunications and signalling networks. By implementing its guidelines, you are investing in the future of your infrastructure, safeguarding it against the unpredictable nature of electrical surges.

Equip your organization with the knowledge and standards necessary to thrive in a rapidly evolving technological landscape. Choose the BS EN IEC 61643-21:2026 and take a proactive step towards enhanced safety, reliability, and performance.

DESCRIPTION

BS EN IEC 61643-21:2026


This standard BS EN IEC 61643-21:2026 Low voltage surge protective devices is classified in these ICS categories:
  • 29.240.10 Substations. Surge arresters
  • 33.040.30 Switching and signalling systems
  • 29.120.50 Fuses and other overcurrent protection devices
IEC 61643-21:2025 is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are intended to be connected to telecommunications and signalling networks, and equipment rated up to 1 000 V RMS and 1 500 V DC. These telecommunications and signalling networks can also provide power on the same line, e.g. Power over Ethernet (PoE). Performance and safety requirements, tests and ratings are specified in this document. These devices contain at least one voltage-limiting component (clamping or switching) and are intended to limit surge voltages and divert surge currents. This second edition cancels and replaces the first edition published in 2000, Amendment1:2008 and Amendment 2:2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) New structure of IEC 61643-21 based on IEC 61643-01:2024; b) Several safety requirements based on IEC 61643-01:2024 have been added. This International Standard is to be used in conjunction with IEC 61643-01:2024.