Product Specification

BrandMarathon Electric
Part Number256THFNA19081
General Details
CategorySevere Duty
Product LineBlue Chip
HP10
KW7.46
RPM1200
Voltage575
EnclosureTEFC
Frame256T
Motor StandardsNEMA
Technical Details
WireN/A
Number of LeadsN/A
Nema DesignB
NameplateN/A
MountRigid
Motor TypeAC Motor
Motor StandardsNEMA
KW7.46
Insulation ClassF
Ingress ProtectionIP56
PaintBLUE (EPOXY)
Phase3
Pole6
Weight405
Voltage575
Thermostats ThermistorsConsult Manufacturer
Temperature RiseN/A
Space HeatersOptional
Shaft Diameter inN/A
Service Factor1.15
RPM1200
RotorN/A
HP10
Hertz60
Grounding TerminalN/A
DutyS1
Drip CoverN/A
Drains BreathersN/A
Down Thrust lbsN/A
Direction of RotationN/A
C Dimension25.27
Conduit BoxN/A
Bearings NDE6210
Bearings DE6309
EfficiencyPremium Efficiency
Elevation3300
EnclosureTEFC
Grounding RingN/A
GreasePOLYREX EM
Full Load Efficiency91.0
Full Load Amps10.5
Frame MaterialCAST IRON
Frame256T
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 Torque139 LB-FT 311%
Noise Level dB A56 dBA
No Load Current5.2
Power Factor 10079
Power Factor 5061
Power Factor 7572.5
Pull Up TorqueN/A
Rotor Inertia lb ft3 LB-FT^2
Safe Stall Time Cold20 SEC.
Safe Stall Time hotN/A
Starts Hour2
Nema Load lb ftN/A
MAX RPMN/A
Max Allowable Inertia lb ft225 LB-FT^2
Efficiency 10091
Efficiency 5090.2
Efficiency 7591
Full Load CurrentN/A
Full Load Speed1176
Full Load Torque44.7 LB-FT
Guaranteed Eff90.2
KVA CodeH
Locked Rotor Current64.8
Locked Rotor Torque92 LB-FT 206%
Start TypeLINE OR INVERTER
Speed Range
CT20:1
VTN/A
Misc
Brake RatingN/A
NoteN/A
OEMN/A