DesignandApplicationsSecondEdition,RevisedandExpandedRUBEND.GARZONSquareDCo.Smyrna,TennesseeMARCELa%MARCELDEKKER,INC.DEKKERCopyright©2002byTaylor&FrancisISBN:0-8247-0799-0Thisbookisprintedonacid-freepaperHeadquartersMarcelDekker,Inc.270MadisonAvenue,NewYork,NY10016tel:212-696-9000:fax:212-685-4540EasternHemisphereDistributionMarcelDekkerAGHutgasse4,Postfach812,CH-4001Basel,Switzerlandtel:41-61-261-8482;fax:41-61-261-8896WorldWideWebhttp:/lwww.dekker.comThepublisheroffersdiscountsonthisbookwhenorderedinbulkquantities.Formoreinfor-mation,writetoSpecialSaledProfessionalMarketingattheheadquartersaddressabove.CopyrightO2002byMarcelDekker,Inc.AllRightsResewed.Neitherthisbooknoranypartmaybereproducedortransmittedinanyformorbyanymeans,electronicormechanical,includingphotocopying,microfilming,andrecording,orbyanyinformationstorageandretrievalsystem,withoutpermissioninwritingfromthepublisher.Currentprinting(lastdigit):I0987654321PRINTEDINTHEUNITEDSTATESOFAMERICACopyright©2002byTaylor&Francishttp://www.taylorandfrancisgroup.comTomygrandsonEdB.DommersCopyright©2002byTaylor&FrancisTheneedforasecondeditionarisesfromthefactthat,althoughitisgenerallyrecognizedthatcircuitbreakersrepresentarelativelymaturetechnologytherearesomeareasofthlstechnologywherechangesareinevitableandwheresomeofthesechangestakeplacecontinuously.Theareaofcircuitbreakerstandardsisoneinwhichsubstantialchangeshavetakenplace.Thesechangeshavebeenhvenprimarilybytheneedandthedesiretoaclueveahighlevelofharmonizationbe-tweentheInternational(IEC)andtheAmerican(ANSI)CircuitBreakerStan-dards.Newstandardshaverecentlybeenpublishedandrevisionstosomeothersareintheprocessofbeingapprovedbybothorganizations.However,asnewre-quirementsarebeingestablishedforthenewgenerationsofequipment,itmustberecognizedthatasignificantnumberofcircuitbreakershadbeendesignedtomeetwhatarenowobsoletestandards.Thesecircuitbreakersarestillinserviceandconsequentlythereisaneedforpreservingthistypeofinformation.Itisthehopethatthereaderswillfindthisse...
