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    449THFS9028
250 HP, 1800 RPM, 460 Volts, TEFC, 447/449T, Rigid, Marathon, W626
$25,869.50
Out of Stock
Dealers Electric-Marathon    449TTFS14055
250 HP, 1800 RPM, 460 Volts, TEFC, 447/449T, Rigid, Marathon, Y1642
$22,542.20
Out of Stock
Dealers Electric-Marathon    449TTFS6038
250 HP, 1800 RPM, 460 Volts, TEFC, 447/449T, Rigid, Marathon, E276
$27,853.09
Out of Stock
Dealers Electric-Marathon    449TTFS6528
250 HP, 1800 RPM, 460 Volts, TEFC, 447/449T, Rigid, Marathon, E771
$23,893.54
Out of Stock
Dealers Electric-Marathon    449TTFS6538
250 HP, 1800 RPM, 460 Volts, TEFC, 447/449T, Rigid, Marathon, E690
$24,852.49
Out of Stock
Dealers Electric-Marathon    449TTGS16537
250 HP, 1800 RPM, 460 Volts, EPFC, 447/449T, Rigid, Marathon, E591
$38,993.14
Out of Stock
Dealers Electric-Marathon    445TSTDS14007
250 HP, 3600 RPM, 460 Volts, DP, 445TS, Rigid, Marathon, U539
$22,266.01
Out of Stock
Dealers Electric-Marathon    447TSTDN16004
250 HP, 3600 RPM, 460 Volts, DP, 447TS, Rigid, Marathon, U785
$22,440.45
Out of Stock
Dealers Electric-Marathon    449TSHFS9003
250 HP, 3600 RPM, 460 Volts, TEFC, 447/449TS, Rigid, Marathon, W624
$27,669.90
Out of Stock
Dealers Electric-Marathon    449TSTFS14012
250 HP, 3600 RPM, 460 Volts, TEFC, 447/449TS, Rigid, Marathon, Y1640
$26,050.54
Out of Stock
Dealers Electric-Marathon    449TSTFS6003
250 HP, 3600 RPM, 460 Volts, TEFC, 447/449TS, Rigid, Marathon, E271
$30,195.33
Out of Stock
Dealers Electric-Marathon    449TSTFS6503
250 HP, 3600 RPM, 460 Volts, TEFC, 447/449TS, Rigid, Marathon, E699
$28,615.02
Out of Stock
Dealers Electric-Marathon    449TTDN16077
300 HP, 1200 RPM, 460 Volts, DP, 449T, Rigid, Marathon, U790
$29,047.08
Out of Stock
Dealers Electric-Marathon    449TTFS6390
300 HP, 1200 RPM, 460 Volts, TEFC, 447/449T, Rigid, Marathon, E284
$38,136.91
Out of Stock
Dealers Electric-Marathon    447TTDN16041
300 HP, 1800 RPM, 460 Volts, DP, 447T, Rigid, Marathon, U789
$23,464.06
Out of Stock
images/motors/BlueMax_t.jpg    449THFS8047
300 HP, 1800 RPM, 460 Volts, TEBC-AXIAL, 447/449T, Rigid, Marathon, Y532
$41,450.07
Out of Stock
images/motors/BlueMax_t.jpg    449THFS8037
300 HP, 1800 RPM, 460 Volts, TEFC, 447/449T, Rigid, Marathon, Y580
$37,538.77
Out of Stock
Dealers Electric-Marathon    449THFS9027
300 HP, 1800 RPM, 460 Volts, TEFC, 447/449T, Rigid, Marathon, W632
$35,927.78
Out of Stock
Dealers Electric-Marathon    449TTFS14057
300 HP, 1800 RPM, 460 Volts, TEFC, 447/449T, Rigid, Marathon, Y1645
$26,115.66
Out of Stock
Dealers Electric-Marathon    449TTFS16534
300 HP, 1800 RPM, 575 Volts, TEFC, 447/449T, Rigid, Marathon, E345
$29,640.28
Out of Stock

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