ENJEC 61643-332 EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHE NORM May 2024 ICS 31.040.20 English Version Components for low-voltage surge protection - Part 332: Selection and application principles for metal oxide varistors (MOV) (IEC 61643-332:2024) Composants pour parafoudres basse tension - Partie 332: Bauelemente fur den Uberspannungsschutz bei Choix et principes d'application des varistances a oxyde Niederspannungen-Teil 332:Auswahl-und métallique (MOV) Anwendungsgrundsatze fur Metalloxidvaristoren (MOV) (IEC 61643-332:2024) (IEC61643-332:2024) This European Standard was approved by CENELEC on 2024-05-22. 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 ManagementCentreortoanyCENELECmember. 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 theofficial versions. 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 European Committee for Electrotechnical Standardization Comite Europeen de Normalisation Electrotechnique Europaisches Komitee fuir Elektrotechnische Normung CEN-CENELECManagementCentre:RuedelaScience23,B-1040Brussels Ref.No.ENIEC61643-332:2024E ENIEC 61643-332:2024 (E) European foreword IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61643-332:2024. The following dates are fixed: latest date by which the document has to be implemented at national (dop) 2025-02-22 latest date by which the national standards conflictingwith the (dow)2027-05-22 documenthavetobewithdrawn 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. complete listing of these bodies can be found on the CENELEC website. Endorsement notice The text of the International Standard IEC 61643-332:2024 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standard indicated: IEC 60364-5-51:2005 NOTE Approved as HD 60364-5-51:2009 +A11:2013 +A12:2017 IEC 61000-4-2:2008 NOTE Approved as EN 61000-4-2:2009 (not modified) IEC 60068-1:2013 NOTE Approved as EN 60068-1:2014 (not modified) IEC 60068-2-20:2021 NOTE Approved as EN IEC 60068-2-20:2021 (not modified) IEC 60068-2-21:2021 NOTE Approved as EN IEC 60068-2-21:2021 (not modified) IEC 60068-2-78:2012 NOTE Approved as EN 60068-2-78:2013 (not modified IEC 60721-3-3:2019 NOTE Approved as EN IEC 60721-3-3:2019 (not modified) IEC 61643-21:2000 NOTE Approved as EN 61643-21:2001 (not modified) IEC 61643-21:2000/A1:2008NOTE Approved as EN 61643-21:2001/A1:2009 IEC 61643-21:2000/A2:2012 NOTE Approved as EN 61643-21:2001/A2:2013 (not modified) 2 ENIEC 61643-332:2024 (E) Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD