INTERNATIONALSTANDARDIEC61811-53QC160503Secondedition2002-03Electromechanicalall-or-nothingrelays–Part53:Blankdetailspecification–Electromechanicalall-or-nothingtelecomrelaysofassessedquality–Twochange-overcontacts,14mm××××9mmbaseRelaisélectromécaniquesdetout-ou-rien–Partie53:Spécificationparticulièrecadre–Relaisélectromécaniquesdetout-ou-rientélécomsoumisaurégimed'assurancedelaqualité–Deuxcontactsàdeuxdirections,surfaced'encombrementde14mm×9mmReferencenumberIEC61811-53:2002(E)LICENSEDTOMECONLimited.-RANCHI/BANGALOREFORINTERNALUSEATTHISLOCATIONONLY,SUPPLIEDBYBOOKSUPPLYBUREAU.PublicationnumberingAsfrom1January1997allIECpublicationsareissuedwithadesignationinthe60000series.Forexample,IEC34-1isnowreferredtoasIEC60034-1.ConsolidatededitionsTheIECisnowpublishingconsolidatedversionsofitspublications.Forexample,editionnumbers1.0,1.1and1.2refer,respectively,tothebasepublication,thebasepublicationincorporatingamendment1andthebasepublicationincorporatingamendments1and2.FurtherinformationonIECpublicationsThetechnicalcontentofIECpublicationsiskeptunderconstantreviewbytheIEC,thusensuringthatthecontentreflectscurrenttechnology.Informationrelatingtothispublication,includingitsvalidity,isavailableintheIECCatalogueofpublications(seebelow)inadditiontoneweditions,amendmentsandcorrigenda.Informationonthesubjectsunderconsiderationandworkinprogressundertakenbythetechnicalcommitteewhichhaspreparedthispublication,aswellasthelistofpublicationsissued,isalsoavailablefromthefollowing:•IECWebSite(www.iec.ch)•CatalogueofIECpublicationsTheon-linecatalogueontheIECwebsite(www.iec.ch/catlg-e.htm)enablesyoutosearchbyavarietyofcriteriaincludingtextsearches,technicalcommitteesanddateofpublication.On-lineinformationisalsoavailableonrecentlyissuedpublications,withdrawnandreplacedpublications,aswellascorrigenda.•IECJustPublishedThissummaryofrecentlyissuedpublications(www.iec.ch/JP.htm)isalsoavailablebyemail.PleasecontacttheCustomerServiceCentre(seebelow)forfurtherinformation.•...