Cut Sheet

Applications
• Enclosedandgasketedxturessuitableforusein:
—Marineandwetlocations
—Awiderangeofindustrial,chemicalprocessingandother
areaswhereammablegasesandvaporsorcombustible
dustsarepresentunderconditionsdenedbytheNational
ElectricalCodeasClassI,Division2;ClassII,Division1and
2;andClassIII
—Areasoflowclearance,lowceilingheightsorwherexture
weightsmustbeminimized
—ForZone2,themethodofprotectionisAExnAnR–
RestrictedBreathing/NonsparkingorAExnR–Restricted
Breathing
—Non-hazardouslocationswheresevereweatherconditions,
excessivemoisture,dirt,dust,corrosiveatmosphereorhigh
ambienttemperaturesareencountered
• Typicalapplicationsinclude:
—Pulpandpapermills
—Processingplants
—Chemicalplants
—Oilreneries
—Foundries
—Manufacturingplants
—Storageareas
—Wasteandsewagetreatment
—Parkinggarages
—Otherareaswheredust,water,dirtandroughusagearea
problem
Features
• Compactlightweightlowproledesignissuitedforlow
mountingheightsinconjunctionwithlowerwattagextures.
• Modulardesignallowsscoresofxturecomponentcombinations
tomeetinstallationandlightingneeds.Usessamemounting
hoodsandopticalaccessoriesasMercmasterIII.
• Achoiceofheat-resistantprismaticglassrefractors(NEMAI,III
orV)orheat-resistantglobeswhichthreaddirectlyintoballast
housing.Photometricsavailableuponrequest–contactyour
localsalesrepresentative.
• Standarddomeor30°anglereectorsmadeofberglass
reinforcedwhitepolyester.Highlyresistanttocorrosive
atmospheres.
• Accommodatesmediumbaselamps.
• Awiderangeofvoltagesavailable(120to600Volt)andballast
types(Reactor,CWA,CWIandSuperCWA).
• Mediumbaselamptypeandwatts:
 —HPS50W-150W
 —PSMH50W-175W
• Hingehashighlipforaddedsafetyduringinstallation
andservicing.Hingeandboltconstructionassures360º
compressionatallpointsonballasthousinggasketforpositive
sealing.Swingawaydesignofcaptiveboltandnutsimplies
servicing.
• AllMercmasterIIImountinghoodshaveprovisionforeasyeld
installationoffusesinxtures(seefusekits).
• FixturesareforuseinClassI,Zone2hazardouslocations.
• TheAExnAnR/ExnR(V)factorysealedMercmasterIII
preventsvaporsandgasesfromenteringtheglobechamber.
Therearenosealsorputtyrequiredwhichwillreduce
installationtimeandinstallationerrors.
Standard Materials
• Mountinghoods,bodiesandguard:castcopperfree
(4/10of1%max.)aluminum
• Allhardwareandcatchassemblies:stainlesssteel
• Reectors:Fiberglassreinforcedwhitepolyester
• GlobesandRefractors:heat-resistantprismaticglass
Standard Finishes
• Mountinghoods,bodiesandguards:bakedgrayepoxy-clad
nish,electrostaticallyappliedforcompleteuniformprotection
Options
• QuartzAuxiliarycomestofullbrightnessimmediatelyand
remainslituntiltheHIDlampattains60-70%offullillumination.
QuartzAuxiliarysuppliedwithrelayswitchandsockettoaccept
120Vquartzdouble-contactbayonetbaselamp(notincluded).
Addsufx-E
†
.
• Guardswithgrayepoxypaintedtomatchxtures,suppliedwith
stainlesssteelscrews.Addsufx-Gbeforevoltagesufx.
• HotRestriketorestrikeHPSlampimmediatelywhenpoweris
restoredafteramomentarypowerinterruption.Addsufx-R.
• SmartStarterincorporatesa1-1/2minutetimerandperforms
asaconventionalstartertonormallystartlamp.Removes
itselffromcircuitiflampburnsoutorisremovedfromsocket.
Eliminatesstarterfailurescausedbyprolongedoperationwith
cyclingorfailinglampsandsimpliesndingtheirlocation,
reducingmaintenanceandrepaircosts.Availableforallxtures.
Addsufx-S.
• SmartHotRestrikewillimmediatelyrestrikeHPSlampwhen
powerisrestoredafteramomentarypowerinterruption.The
smartfunctionremovesthehotrestrikeignitorfromthecircuit
ifthelampburnsoutorisremovedfromthesocket.Eliminates
starterfailurescausedbyprolongedoperationwithcyclingor
failinglamps.Addsufx-SR.
• AExnAnRxtures,addsufx-Z2.
• AExnRxtures,addsufx-ZB.
• ExnRxtures,addsufx-Z V.
• Reectorsareavailableasstandarddomeand30°angle
polyester.Orderseparately.
Class I, Division 2, Groups A, B, C, D
Class I, Zone 2, AEx nA nR IIC (Z2)
Class I, Zone 2, Ex nR IIC (Z) V
Class I, Zone 2, AEx nR IIC (ZB)
Class II, Division 1 and 2, Groups E, F, G
Class III
Simultaneous Exposure (Class I, Division 2/
Class II, Division 1)
Fixtures Outside Type (Salt Water)
Type 4X
IP66
Low Profile Mercmaster III with Prismatic Globe and Guard
† Fixtures equipped with quartz auxiliary lamp do not comply with NEC/CEC V requirements and are not suitable for use in classified locations.
V CSA Certification Only.
Lighting
Lighting: EncLosEd and gaskEtEd — arEa — hid
Visit our website at www.appletonelec.com or contact us at [phone].
© October 2012
922
Mercmaster
™
III Low Profile Luminaires
High Pressure Sodium and Pulse Start Metal Halide
Listed for simultaneous exposure to combustible dusts and flammable gases or vapors.