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1、UL200–7629–0596–4General-UseSnapSwitchesULCOPYRIGHTEDMATERIAL–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULThisPDFStandarddownloadedfromwww.bzfxw.comULCOPYRIGHTEDMATERIAL–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULDECEMBER17,2
2、004−UL20tr3UnderwritersLaboratoriesInc.(UL)333PfingstenRoadNorthbrook,IL60062-2096ULStandardforSafetyforGeneral-UseSnapSwitches,UL20TwelfthEdition,DatedSeptember22,2000Revisions:ThisStandardcontainsrevisionsthroughandincludingDecember17,2004.SummaryofTopicsThisrevisionisbeingissued
3、toaddrequirementsfor:1)ThereplacementofthetermNaturalGreywithGrayULStandardsforSafetyaredevelopedandmaintainedintheStandardGeneralizedMarkupLanguage(SGML).SGML--aninternationalstandard(ISO8879-1986)--isadescriptivemarkuplanguagethatdescribesadocument’sstructureandpurpose,ratherthan
4、itsphysicalappearanceonapage.DuetoformattingdifferencesresultingfromtheuseofUL’snewelectronicpublishingsystem,pleasenotethatadditionalpages(onwhichnorequirementshavebeenchanged)maybeincludedinrevisionpagesduetorelocationofexistingtextandreformattingoftheStandard.Textthathasbeenchan
5、gedinanymannerismarkedwithaverticallineinthemargin.Changesinrequirementsaremarkedwithaverticallineinthemarginandarefollowedbyaneffectivedatenoteindicatingthedateofpublicationorthedateonwhichthechangedrequirementbecomeseffective.Thefollowingtableliststhefutureeffectivedateswiththeco
6、rrespondingitem.FutureEffectiveDatesReferencesJune1,2005EntireStandardexceptparagraphsasshownbelow.June1,2006Paragraphs4.1.2,4.9.5.1,5.18.1,7.6.14,and7.6.15TherevisedrequirementsaresubstantiallyinaccordancewithUL’sBulletin(s)onthissubjectdatedDecember22,2003.Thebulletin(s)isnowobso
7、leteandmaybediscarded.TherevisionsdatedDecember17,2004includeareprintedtitlepage(page1)forthisStandard.Asindicatedonthetitlepage(page1),thisULStandardforSafetyisanAmericanNationalStandard.AttentionisdirectedtothenoteonthetitlepageofthisStandardoutliningtheprocedurestobefollowedtore
8、taintheapprovedtextofthisA
