What is a Variable Frequency Drive?
A variable frequency drive is an electronic device that allows you to start, stop, and control the speed of a three phase motor. It is also a motor starter as it is equipped with overload protection. Read more »
What is the difference between a 'new surplus' motor and a 'factory new' motor?
Our New Surplus electric motors and drives are new and unused overstock or discontinued items offered at lower prices and come with our 90-day warranty.

Factory New products are competitively priced and come with a manufacturers warranty.
Variable frequency drives (VFDs or inverters) now play an important part in major industry.
Within the last 10 years they have been perfected to control and vary the speed of 3 phase electric motors. They serve many purposes, besides speed control. Homeowners and hobbyist alike, who have lathes or milling machines with a 3 phase motor, usually don't have 3 phase power to operate. These VFDs (instead of using a rotary phase converter) can now be used to convert single phase power to 3 phase power. Read more »
 
 
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Since 1913, Marathon Electric has been dedicated to providing customers with quality products for targeted applications. Located in Wausau, Wisconsin, the company delivers efficient mechanical power solutions using AC electric motors up to 1250 HP.
 

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Dealers Electric-Marathon    143TTDR6051
1 HP, 1800 RPM, 230/460 Volts, DP, 143T, Rigid, Marathon, U418A
$454.43
Out of Stock
Dealers Electric-Marathon    143TTDR6052
1 HP, 1800 RPM, 230/460 Volts, DP, 143T, Rigid, Marathon, U417A
$672.56
Dealers Electric-Marathon    145TTDR5701
1 HP, 1800 RPM, 460 Volts, DP, 145T, Rigid, Marathon, Y465
$1,065.32
Dealers Electric-Marathon    145TTDR5703
1 HP, 1800 RPM, 200-230 Volts, DP, 145T, Rigid, Marathon, Y449
$1,077.45
Out of Stock
Dealers Electric-Marathon    145TTDR5704
1 HP, 1800 RPM, 460 Volts, DP, 145T, Rigid, Marathon, Y450
$1,064.22
Out of Stock
Dealers Electric-Marathon    056T17D2092
1 HP, 1800 RPM, 208-230/460 Volts, DP, 56, Rigid, Marathon, K004
$344.52
Out of Stock
Dealers Electric-Marathon    056T17D2101
1 HP, 1800 RPM, 208-230/460 Volts, DP, 56, Resilient Base, Marathon, G100
$407.44
Dealers Electric-Marathon    056T17D2113
1 HP, 1800 RPM, 200-208 Volts, DP, 56, Rigid, Marathon, K003
$340.98
Out of Stock
Dealers Electric-Marathon    056T17D2130
1 HP, 1800 RPM, 575 Volts, 3 PH, ODP, 56, 575 VOLT, Marathon, 056T17D2130
$269.16
Dealers Electric-Marathon    056T17D5342
1 HP, 1800 RPM, 208-230/460 Volts, DP, 56, Rigid, Marathon, G921
$410.82
Out of Stock
Dealers Electric-Marathon    056T17D5347
1 HP, 1800 RPM, 208-230/460 Volts, DP, 56, Resilient Base, Marathon, G142
$424.16
Out of Stock
056T17DRR70010A1-Marathon-Dealers Industrial    056T17DRR70010A1
1 HP, 1800 RPM, 208-230/460 Volts, ODP, 56, -, Marathon, G921A
$476.52
Dealers Electric-Marathon    5K46MN4072
1 HP, 1725 RPM, 208-230/460 Volts, DP, 56, WB, Marathon, K122
$348.70
Out of Stock
Dealers Electric-Marathon    5K46MN4087X
1 HP, 1725 RPM, 208-230/460 Volts, DP, 56, RB, Marathon, K1412
$475.57
Dealers Electric-Marathon    5K49SN3054
1 HP, 1725/1140 RPM, 200-230 Volts, DP, 56, RB, Marathon, K518
$495.31
Out of Stock
Dealers Electric-Marathon    5K49SN3055
1 HP, 1725/1140 RPM, 460 Volts, DP, 56, RB, Marathon, K519
$436.02
Out of Stock
Dealers Electric-Marathon    5KE49PN4594
1 HP, 1800 RPM, 208-230/460 Volts, DP, 56, Rigid, Marathon, K2069
$485.33
Out of Stock
056T17D11048-Marathon-Dealers Industrial    056T17D11048
1 HP, 1800 RPM, 575 Volts, ODP, 56C, footless, Marathon, G244A
$334.82
Dealers Electric-Marathon    056T17D2127
1 HP, 1800 RPM, 575 Volts, DP, 56C, C-Face Footless, Marathon, G244
$353.81
Out of Stock
Dealers Electric-Marathon    5K46MN4126
1 HP, 1725 RPM, 208-230/460 Volts, DP, 56C, N/R, Marathon, K251
$353.81
Out of Stock

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