Leviton 51120-1 User Manual (English)

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INSTALLATION

WARNINGS & CAUTIONS:

• TOBEINSTALLEDAND/ORUSEDINACCORDANCEWITHELECTRICALCODESANDREGULATIONS.

• INSTALLATIONOFCAT.NOS.51120-1AND51120-3SPDDEVICESINABRANCHCIRCUITMUSTBEDONEBYANELECTRICIAN.

• READALLINSTRUCTIONSBEFOREINSTALLING.

• CAT.NOS.51120-1AND51120-3SPDDEVICESMUSTBEINSTALLEDONALINETHATISSERVEDBYDISCONNECTMEANS,SUCHAS20-AMPCIRCUITBREAKERSOR20-AMP

FUSEDDISCONNECTSWITCHES.

• SPDMAYNOTSURVIVESUSTAINEDOVERVOLTAGES.

• USETHISDEVICEONLY WITH COPPER OR COPPER CLAD WIRE.

FEATURES:

• UL1449Listed-Type2SPD

• IEEEC62.41-1991categoryA&Bcombinationwavesuppression

• Solid-statesemiconductorSPDcircuitryforeachphase

• Eachphaseindependentlyfused

• GreenLEDdiagnosticindicatorforeachphase

• NEMA1metalenclosure

• Pre-punchedstandardknockouts

• Interiorplasticcircuitenclosureforaddedsafety

• Flushmountingenclosure

ForsuperiorlocalSPDprotection,useLevitonSurgeSuppressionOutletstoprotectagainstinternally-generatedtransientsbetweenthebranchpanelandthepointofuse.

DESCRIPTION:

Leviton’sCatalogNos.51120-1(120/240V,single-phaseversion)andthe51120-3(120/208V,3-phaseversion)BranchPanelMountedSPDdeviceshavebeendesignedtoprotect

residentialandsmallcommercialestablishmentsfromhighvoltagetransients.ThestandardJ-Boxmetalenclosurewithpre-punchedstandardsizeknockoutssimpliesush

mountingintypicalframeconstructionenvironments,andprovidesconvenientconnectionmeanstoexistingbranchpanels.

TO INSTALL:

System Voltage Requirements

1. Measurepanelvoltage,L-N,todeterminethesystemvoltage.SystemvoltagemustnotexceedthespeciedmaximumcontinuousRMSvoltageontheSPDdevicelabel.

Location and Mounting

1. LocatetheSPDdeviceascloseaspossibletothebranchcircuitbreakerpanel.ConnectionleadlengthbetweentheSPDdeviceandcircuitbreakerboxshouldbeminimalfor

bestprotection.ThelocationshouldalsopermitgoodvisibilityoftheSPDdevice’sdiagnosticlights.

2. Removethecircuitbreakerpanelcoveranddeterminethebreaker-panelwiringentrypointrelativetochosenlocationoftheSPDdevice.

 NOTE:SincethecircuitbreakerpanelandtheSPDunithaveoverlappingcovers,installationshouldallowatleastoneinchofclearancefromtheedgeofthecircuitbreaker

panelcover.

3. Forsurface-mountcircuitbreakerpanels,theSPDdevicemaybeconnectedusingrigidconduittoanyconduitknockouthole.

4. Fornon-surfacemountinstallations,securetheSPDtothesupportstudinthewallbycuttinga6x6-inchmountinghole.

5. RemoveSPD’scoverandconnect3/4-inchexibleorrigidconduitbetweencircuitbreakerboxandtheSPD.

6. PlacetheSPDdeviceintothe6x6-inchmountingholeandsecureittotheexposedstuds.

Wiring Connections

TheSPDdeviceterminalblockaccepts4AWG–12AWGCOPPERWIREONLY.ForwirerangeSolidorStranded12AWGto10AWGuseTorque25in-lbs.For8AWGStranded

wireuse30in-lbs.ForStranded6AWG–4AWGuse35in-lbs.

1.

WARNING:TOAVOIDFIRE,SHOCKORDEATH,TURN OFF POWERATCIRCUITBREAKERORFUSEANDTESTTHATPOWERISOFFBEFOREWIRING!

2. Connectwireleadstoterminalblock:BLACKtoPHASES,WHITEtoNEUTRALandGREENtoGROUND.SeeFigures 1through4onreverseside.

CAUTION:Ifplasticconduitisused,Greengroundwiremustbeconnectedtogroundlug,andGreenwireinsideenclosuremustalsobeconnectedtogroundlug.Failuretodo

somayresultinreorshock.SeeFig. 1,Fig. 2,Fig. 3andFig. 4onreversesideforinstallationdiagrams.

3. ThreadtheSPDdevice’swireleadsthroughtheconduittocircuitbreakerinterior.

4. SecuretheSPDcoverwiththescrewsremovedpreviously.

5. Selectcircuitbreakersascloseaspossibletoeachserviceentrancelug.Twenty-Amp(20A)circuitbreakersarerecommended,andmayshareSPDdeviceandbranchcircuit

leads.ThebreakersprovideadditionalfailureprotectionaswellasaSPDconnectionandservicingdisconnect.

NOTE:DonotconnectSPDleadsdirectlytoserviceentrancelugs.Thismayresultinre,shockordeath.

6. Leadlengthsshouldbeasshortaspossible.ConnecttheBLACKleadstoeachPHASEthroughtheselectedcircuitbreakers.ConnecttheWHITEleadtoNEUTRALascloseas

possibletoNEUTRALentranceservicelug.

NOTE: Avoidlongloopsanddonotcoilextraleadwire.

7. Replacethecircuitbreakerpanelcover.Installationiscomplete.

Power ON

1. Restorepowertocircuitbreakerpanel.ThegreendiagnosticlightsontheSPDdeviceshouldturnON.

2. Ifduringnormaloperationadiagnosticlightshutsoff,haveanelectriciandetermineifphasepowerisapplied.Ifpowerispresent,thenatransientsurgehasexceededtheSPD

device’srating.Theunitshouldbereplacedand/orupgradedassoonaspossible.

BRANCH PANEL MOUNTED SURGE PROTECTIVE DEVICE (SPD)

Cat. Nos. 51120-1&51120-3

DI-000-51120-00E