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EVS-EN IEC 62305-4:2025

Protection against lightning - Part 4: Electrical and electronic systems within structures

General information

Valid from 01.10.2025
Base Documents
IEC 62305-4:2024; EN IEC 62305-4:2024
ICS Groups
29.020 Electrical engineering in general 91.120.40 Lightning protection
Directives or regulations
None

Standard history

Status
Date
Type
Name
01.10.2025
Main
EVS-EN IEC 62305-4:2025
06.12.2016
Corrigendum
EVS-EN 62305-4:2011/AC:2016
05.04.2011
Main + corrigendum
EVS-EN 62305-4:2011

IEC 62305-4 provides requirements for the design, installation, inspection, maintenance, and testing of surge protection measures (SPM) for electrical and electronic systems to reduce the risk of permanent failures due to lightning electromagnetic impulse (LEMP) within a structure.

It does not cover protection against electromagnetic interference due to lightning, which can cause malfunctioning of internal systems. However, the information reported in Annex A can also be used to evaluate such disturbances. Protection measures against electromagnetic interference are covered in IEC 60364-4-44 and in the IEC 61000 series.

IEC 62305-4 provides guidelines for cooperation between the designer of the electrical and electronic system and the designer of the protection measures, to achieve optimum protection effectiveness.

It does not deal with detailed design of the electrical and electronic systems themselves.

IEC 62305-4:2024 text has been approved in Europe as EN IEC 62305-4:2024 without any changes.

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Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English