Product Specification

BrandMarathon Electric
Part Number284THFNA19048
General Details
CategorySevere Duty
Product LineBlue Chip
HP25
KW18.65
RPM1800
Voltage460
EnclosureTEFC
Frame284T
Motor StandardsNEMA
Technical Details
WireN/A
Number of LeadsN/A
Nema DesignB
NameplateN/A
MountRigid
Motor TypeAC Motor
Motor StandardsNEMA
KW18.65
Insulation ClassF
Ingress ProtectionIP56
PaintBLUE (EPOXY)
Phase3
Pole4
Weight478
Voltage460
Thermostats ThermistorsConsult Manufacturer
Temperature RiseN/A
Space HeatersOptional
Shaft Diameter inN/A
Service Factor1.15
RPM1800
RotorN/A
HP25
Hertz60
Grounding TerminalN/A
DutyS1
Drip CoverN/A
Drains BreathersN/A
Down Thrust lbsN/A
Direction of RotationN/A
C Dimension26.44
Conduit BoxN/A
Bearings NDE6210
Bearings DE6311
EfficiencyPremium Efficiency
Elevation3300
EnclosureTEFC
Grounding RingAEGIS Shaft Grounding Ring Installed
GreasePOLYREX EM
Full Load Efficiency93.6
Full Load Amps31.0
Frame MaterialCAST IRON
Frame284T
FlangeN/A
FanN/A
EncodersN/A
Ambient Teperature40
Area Classification
Area ClassificationClass I, Division 2, Groups A, B, C & D, Zone 2
Temp CodeT2B
Perfomance
Breakdown Torque185 LB-FT 250%
Noise Level dB A65 dBA
No Load Current13
Power Factor 10081
Power Factor 5065.5
Power Factor 7576
Pull Up TorqueN/A
Rotor Inertia lb ft4.2 LB-FT^2
Safe Stall Time Cold50 SEC.
Safe Stall Time hotN/A
Starts Hour2
Nema Load lb ftN/A
MAX RPMN/A
Max Allowable Inertia lb ft175 LB-FT^2
Efficiency 10093.6
Efficiency 5093.6
Efficiency 7594.1
Full Load CurrentN/A
Full Load Speed1772
Full Load Torque74 LB-FT
Guaranteed Eff93
KVA CodeG
Locked Rotor Current182
Locked Rotor Torque138 LB-FT 186%
Start TypeLINE OR INVERTER
Speed Range
CT20:1
VTN/A
Misc
Brake RatingN/A
NoteN/A
OEMN/A