IEC IEC61643-331 Edition 3.02020-03 REDLINEVERSION INTERNATIONAL STANDARD colour inside Componentsforlow-voltagesurgeprotectivedevicesprotection Part 331: Performance requirements and test methods for metal oxide varistors (MOV) IEC61643-331:2020-03RLV(en) THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright 2020 IEC,Geneva, Switzerland or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Central Office Tel.: +41 22 919 02 11 3.rue de Varembe [email protected] CH-1211Geneva20 www.iec.ch Switzerland About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. AboutIEC publications latest edition, a corrigendum or an amendment might have been published. IEC publications search -webstore.iec.ch/advsearchform Electropedia-www.electropedia.org The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology. variety. of criteria (reference number,text, technical containing more than 22 000 terminological entries in English committee,...). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages. and withdrawn publications. Also known as the International Electrotechnical Vocabulary (IEV) online. IEC Just Published -webstore.iec.ch/justpublished IEc Glossary - std.iec.ch/glossary Stay up to date on all new IEC publications. Just Published details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of once a month by email. IEC publications issued since 2002. Some entries have been IEC CustomerServiceCentre-webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and If you wish to give us your feedback on this publication or CISPR. need further assistance, please contact the Customer Service Centre:[email protected]. IEC IEC61643-331 Edition3.0 2020-03 REDLINEVERSION INTERNATIONAL STANDARD colour inside Componentsforlow-voltagesurgeprotectivedevicesprotection- Part 331:Performance requirements and test methods for metal oxide varistors (MOV) INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 31.040.20 ISBN 978-2-8322-8023-2 Warning! Make sure that you obtained this publication from an authorized distributor.