Product Specification

BrandMarathon Electric
Part Number256THFNA19081
General Details
CategorySevere Duty
Product LineBlue Chip
HP10
KW7.46
RPM1200
Voltage575
EnclosureTEFC
Frame256T
Motor StandardsNEMA
Technical Details
Phase3
HP10
Ingress ProtectionIP56
Insulation ClassF
KW7.46
Motor StandardsNEMA
Motor TypeAC Motor
MountRigid
NameplateN/A
Nema DesignB
Number of LeadsN/A
PaintBLUE (EPOXY)
Hertz60
Pole6
RotorN/A
RPM1200
Service Factor1.15
Shaft Diameter inN/A
Space HeatersOptional
Temperature RiseN/A
Thermostats ThermistorsConsult Manufacturer
Voltage575
Weight405
WireN/A
EnclosureTEFC
Bearings DE6309
Bearings NDE6210
Conduit BoxN/A
C Dimension25.27
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
Frame256T
Frame MaterialCAST IRON
Full Load Amps10.5
Full Load Efficiency91.0
GreasePOLYREX EM
Grounding RingN/A
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 Cold20 SEC.
Rotor Inertia lb ft3 LB-FT^2
Pull Up TorqueN/A
Power Factor 7572.5
Power Factor 5061
Power Factor 10079
No Load Current5.2
Noise Level dB A56 dBA
Nema Load lb ftN/A
Breakdown Torque139 LB-FT 311%
Max Allowable Inertia lb ft225 LB-FT^2
Locked Rotor Torque92 LB-FT 206%
Locked Rotor Current64.8
KVA CodeH
Guaranteed Eff90.2
Full Load Torque44.7 LB-FT
Full Load Speed1176
Full Load CurrentN/A
Efficiency 7591
Efficiency 5090.2
Efficiency 10091
Speed Range
CT20:1
VTN/A
Misc
Brake RatingN/A
NoteN/A
OEMN/A