What is the difference between MCCBs and ACBs? And what ...
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ACB and MCCB both are used for safe making and breaking of electrical systems. In principle, both serve the same purpose. {"searchBar":{"inputPlaceholder":"Searchbykeywordoraskaquestion","searchBtn":"Search","error":"Pleaseenterakeywordtosearch"}} {} SearchFAQs {"support":{"yesButton":"Yes","noButton":"No","feedback":{"title":"Whatcanwedotoimprove?"},"submitButton":"Submit","successMessage":"Thankyouforyourfeedback","title":"Wasthishelpful?","feedbackPercentLabel":"ofpeoplefoundthishelpful","captcha":{"error":"Pleasecheckthebox"}}} SearchFAQs ThisFAQhasbeenwrittenforNEAL(NorthEastAfricaandLevant)region.Ifyouarelookingforinformationforanotherregion,pleaseselectthecorrectcountryfromthetop-leftdropdowninthepageand'NavigatetoBrowseFAQs'intheSupportmenu.WhatisthedifferencebetweenMCCBsandACBs?AndwhatisthedifferencebetweenCompactNSandMasterpactNT/NW?ACBandMCCBbothareusedforsafemakingandbreakingofelectricalsystems.Inprinciple,bothservethesamepurpose. ACBsareusuallyseenonupstreamsideofcircuit&MCCBsonloadsidecontrol(usually,loadsideswitchingoperationsaremorefrequentthanupstream).Dependingupontheoperatingvoltagesandlevelofprotection(FaultLevel)neededforthesystem,thesethreeprotectiondeviceareselected.Asthetechnologyhasimprovedovertheperiodoftime,therating&breakingcapacitiesofMCCBsareincreasing-hencethereispossibilityofoverlapinapplicationofACB&MCCB. MCCBs:Ratedcurrentupto3200A. Adjustabletrippingthresholds. Magneticorthermal-magneticoperation. Tripunitscanbemagnetic,thermal-magneticorelectronic. MostMCCBshaveutilisationcategory"A". MCCBsingeneralarelessexpensivethanACBs. ACBs:Ratedcurrentupto6300A. Adjustabletrippingthresholds. Thermal-magneticoperation.Tripunitscanbethermal-magneticorelectronic. MostACBshaveutilisationcategory"B"whichmeansthatithasan"Icw"valuewhichistheratedshort-timewithstandcurrent. ACBsaremoreexpensivethanMCCBs. AsforthedifferencebetweenCompactNSandMasterpactNT/NW,pleasefindbelowaquickglimpseonthedifferencesbetweenCompactNSandMasterpactNT. BreakingcapacitiesofMasterpactingeneralarehigherthanthoseofCompactNSasillustratedintheattachedcatalogueextracts(refertoMasterpactSpecs.pdf&CompactNSSpecs.pdf) MasterpactACBshaveanoptionofaddingamotormechanismatanytimeofthelifetimeoftheproductwhileCompactNSshouldbeorderedfromthebeginningasanelectricallyoperateddevice(withmotor)oramanuallyoperateddevice(withthestandardtoggle).AddinganmotortoamanuallyoperatedCompactNSdeviceisnotpossibleasitofferedasafactoryinstalledmodelonly. CompactNS(>1600A)donothavetheoptionofhavingamotormechanism.ThisoptionisonlyvalidforCompactNS(from630Aupto1600A). MasterpactcanuseatripunitthatmeasuresHarmonicsandismeantwithpowerqualityandwaveformcapturing(MicrologicH)andthistripunitisnotavailableforusewithCompactNSasillustratedintheattacheddocuments(refertoMasterpactMicrologicTripunits.pdf&CompactNSMicrologicTripunits.pdf). Masterpactauxiliariessectioniseasiertoaccess.Userdoesnothavetotripthebreakerandremoveitscover(asinCompactNS)toadd/removeacertainauxiliaryasillustratedintheattachedimages(refertoCompactNSMCCB.jpg&MasterpactACB.jpg) Masterpacthasaplaceforaddingextrafeatures/auxiliariessuchasMCH(motormechanism),XF(openingvoltagerelease)andPF(readytoclosecontact)asillustratedintheattacheddocument(refertoCompactNSElectricalDiagram.pdf&MasterpactNTandNWElectricalDiagrams.pdf) CompactNShasrestrictionsinmechanicalandelectricalinterlocking.TheserestrictionsarenotappliedtoMasterpactNT. AlltheabovementionedpointsofcomparisonsarevalidforMasterpactNW.TheonemainadvantageinMasterpactNWisthatitcanoperateupto6300A(MasterpactNToperatesupto1600AandCompactNSoperatesupto3200A) ThelatestversionoftheCompactNSandMasterpactcataloguescanbedownloadedthroughthefollowingdirectlinks: CompactNS:https://download.schneider-electric.com/files?p_enDocType=Catalog&p_File_Name=LVPED211021EN.pdfMasterpactNT/NW:https://download.schneider-electric.com/files?p_enDocType=Catalog&p_File_Name=LVPED208008EN.pdfAttachment(s)Attachments.zip[3.47MB]Publishedon:2/3/2016LastModifiedon:9/30/2021 Can'tfindwhatyouarelookingfor? ReachouttoourCustomerCareteamtoreceiveinformationontechnicalsupport,assistanceforcomplaintsandmore. ContactSupport Accessibilitymodeoff Accessibilitymodeon
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