Product Specification

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