Specifications

Diversied Electronics 800.727.5646 atcdiversied.com
Diversied Electronics 800.727.5646 atcdiversied.com
 


Locationsinwhichflammablegasesor
vaporsmaybepresentintheairin
quantitiessufficienttoproduceexplosive
orignitablemixtures.

Atmospherescontainingacetylene.

Atmospherescontaininghydrogen,gases
orvaporsofequivalenthazard,suchas
manufacturedgas.

Atmospherescontainingethyl-ethervapors,
ethyleneorcyclopropane.

Atmospherescontaininggasoline,hex-
ane,naphtha,benzine,butane,propane,
alcohol,acetone,benzol,lacquersolvent
vaporsornaturalgas.

Locationsinwhichhazardousconcentra-
tionsintheairexistcontinuously,inter-
mittentlyorperiodicallyundernormal
operatingconditions.

Locationswhicharehazardousbecauseof
thepresenceofcombustibledust.

Atmospherescontainingmetaldustinclud-
ingaluminum,magnesiumandtheircom-
mercialalloysandothermetalsofsimilarly
hazardouscharacteristics.

Atmospherescontainingcarbonblack,coal
orcokedust.

Atmospherescontainingflour,starchor
graindusts.

Locationswhicharehazardousbecauseof
thepresenceofeasilyignitablefibersor
flyings,butinwhichsuchfibersorflyings
arenotlikelytobeinsuspensioninairin
quantitiessufficienttoproductignitable
mixtures.

Locationsinwhichhazardousconcentra-
tionsarehandled,processedorused
butarenormallyconfinedwithinclosed
containersorclosedsystemsfromwhich
theycanescapeonlyincaseofaccidental
ruptureorbreakdown.
TheATCDiversifiedElectronicsseriesofIsolatedSwitcheshavebeentestedandapprovedfor
listingunderUnderwritersLaboratories(UL)UL913IntrinsicallySafeApparatusandAssociated
Apparatus.Theinput(s)totheseswitcheshavebeenapprovedforuseinallclasses,groupsand
divisionsofhazardouslocations.

HazardouslocationsareclassifiedbytheNationalElectricalCodeac-
cordingtothelevelofhazardthatmayexistinthearea.Ahazardous
locationisdesignatedbyitsclass,groupanddivision.
Classandgroupspecifythetypeofhazardoussubstancethatmay
existintheclassifiedlocation.Thedivisionindicatestheconditions
underwhichthehazardoussubstancemaybepresent.
ProcessControl
Equipmentfor
HazardousLocations
7M26
UL913