IEC IEC 60691 Edition 5.0 2023-03 REDLINEVERSION INTERNATIONAL STANDARD colour inside Thermal-links - Requirements and application guide IEC 60691:2023-03 RLV(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2023 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 your local IEC member National Committee for further information. IEC Secretariat Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] CH-1211 Geneva 20 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. AboutIEcpublications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latestedition,acorrigendumoranamendmentmighthavebeenpublished IEC publicationssearch-webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the varietyofcriteria(reference number, text, technical publicationspreviews.Withasubscriptionyouwillalwayshave committee, ...). It also gives information on projects, replaced access to up to date content tailored to your needs. and withdrawn publications. Electropedia - www.electropedia.org IEc Just Published - webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology. Stay up to date on all new IEC publications. Just Published containing more than 22 300 terminological entries in English details all new publications released.Available online and once and French, with equivalent terms in 19 additional languages. a month by email. Also known as the international Electrotechnical Vocabulary (IEV) online. IECCustomerServiceCentre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance,please contact the Customer Service Centre: [email protected]. IEC IEC 60691 Edition 5.0 2023-03 REDLINE VERSION INTERNATIONAL STANDARD colour inside Thermal-links - Requirements and application guide INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.120.50 ISBN 978-2-8322-6617-5 Warning! Make sure that you obtained this publication from an authorized distributor. ? Registered trademark of the International Electrotechnical Commission