EN IEC 61643-41 EUROPEANSTANDARD NORME EUROPEENNE EUROPAISCHE NORM August 2025 ICS 29.240.10 English Version Low-voltage surge protective devices - Part 41: Surge protective devices connected to DC low-voltage power systems Requirements and test methods (IEC61643-41:2025) Parafoudres basse tension - Partie 41: Parafoudres Oberspannungsschutzgerate fur Niederspannung - Teil 41: connectes aux reseaux basse tension en courant continu - Uberspannungsschutzgerate fur den Einsatz in Exigences et methodes d'essai Niederspannungs-Gleichstromnetzen -Anforderungen und (IEC 61643-41:2025) Prufverfahren (IEC 61643-41:2025) This European Standard was approved by CENELEC on 2025-07-15. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkiye and the United Kingdom. CENELEC EuropeanCommitteeforElectrotechnical Standardization ComiteEuropeendeNormalisationElectrotechnique Europaisches Komitee fur Elektrotechnische Normung CEN-CENELEC Management Centre: Rue dela Science23,B-1040 Brussels Ref.No.ENIEC 61643-41:2025E ENIEC61643-41:2025 (E) European foreword The text of document 37A/426/FDIS, future edition 1 of IEC 61643-41,prepared by SC 37A"Low voltage surge protective devices"of IEC/TC 37"Surge arresters"was submitted to theIEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61643-41:2025. The following dates are fixed: latest datebywhich the document has to be implemented at national (dop) 2026-08-31 levelbypublicationof an identical national standard orbyendorsement latest date by which the national standards conflicting with the (dow) 2028-08-31 document have to be withdrawn Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights This document is read in conjunction with EN IEC 61643-01. European Commission.The Standing Committee of the EFTA States subsequently approves these requests for its Member States. For the relationship with EU Legislation, see informative Annex ZZ, which is an integral part of ENIEC 61643-41:2025/A11:2025. Any feedback and questions on this document should be directed to the users' national committee. A complete listing of these bodies canbefoundon theCENELECwebsite. Endorsement notice The textofthe International Standard IEC 61643-41:2025 was approved byCENELEC as a European Standard without any modification. IEC62368-1:2018 BNOTEApprovedasENIEC62368-1:2020 (notmodified)+A11:2020 ISO 4892-1 NOTEApprovedas ENISO 4892-1 ISO 4892-2 NOTEApprovedas ENISO4892-2 2 ENIEC61643-41 NORMEEUROPEENNE EUROPAISCHE NORM EUROPEAN STANDARD Aout2025 ICS29.240.10 Versionfrancaise Parafoudresbassetension-Partie41:Parafoudresconnectés aux réseaux basse tension en courant continu - Exigences et méthodes d'essai (IEC61643-41:2025) Oberspannungsschutzgerate fur Niederspannung - Teil 41: Low-voltage surge protective devices - Part 41: Surge Uberspannungsschutzgerate fur den Einsatz in prote