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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447TSTDN7001-Marathon-Dealers Industrial    447TSTDN7001
300 HP, 3600 RPM, 460 Volts, 3 PH, ODP, 447TS, Marathon, 447TSTDN7001
$20,181.60
Out of Stock
447TSTDN7003-Marathon-Dealers Industrial    447TSTDN7003
350 HP, 3600 RPM, 460 Volts, 3 PH, ODP, 447TS, Marathon, 447TSTDN7003
$20,251.30
Out of Stock
447TSTDN7005-Marathon-Dealers Industrial    447TSTDN7005
400 HP, 3600 RPM, 460 Volts, 3 PH, ODP, 447TS, Marathon, 447TSTDN7005
$30,804.62
Out of Stock
447TSTDN7026-Marathon-Dealers Industrial    447TSTDN7026
300 HP, 1800 RPM, 460 Volts, 3 PH, ODP, 447TS, Marathon, 447TSTDN7026
$17,760.47
Out of Stock
447TSTDN7027-Marathon-Dealers Industrial    447TSTDN7027
350 HP, 1800 RPM, 460 Volts, 3 PH, ODP, 447TS, Marathon, 447TSTDN7027
$17,565.61
Out of Stock
447TSTDN7028-Marathon-Dealers Industrial    447TSTDN7028
400 HP, 1800 RPM, 460 Volts, 3 PH, ODP, 447TS, Marathon, 447TSTDN7028
$19,788.34
Out of Stock
447TTDN16044-Marathon-Dealers Industrial    447TTDN16044
350 HP, 1800 RPM, 460 Volts, 3 PH, ODP, 447T, Marathon, 447TTDN16044
$31,993.10
Out of Stock
447TTFC6633-Marathon-Dealers Industrial    447TTFC6633
200 HP, 1800 RPM, 460 Volts, 3 PH, TEFC, 447T, Marathon, 447TTFC6633
$24,460.19
Out of Stock
447TTFC6683-Marathon-Dealers Industrial    447TTFC6683
150 HP, 1200 RPM, 460 Volts, 3 PH, TEFC, 447T, Marathon, 447TTFC6683
$25,855.69
Out of Stock
447VTDC6026-Marathon-Dealers Industrial    447VTDC6026
250 HP, 1800 RPM, 460 Volts, 3 PH, WP1, 447TPV, Marathon, 447VTDC6026
$24,257.71
Out of Stock
449THFS19091-Marathon-Dealers Industrial    449THFS19091
250 HP, 1200 RPM, 460 Volts, 3 PH, TEFC, 447/449T, Marathon, 449THFS19091
$36,104.77
Out of Stock
449TSTDN14005-Marathon-Dealers Industrial    449TSTDN14005
500 HP, 3600 RPM, 460 Volts, 3 PH, ODP, 449TS, Marathon, 449TSTDN14005
$35,951.32
Out of Stock
449TSTDN14033-Marathon-Dealers Industrial    449TSTDN14033
450 HP, 1800 RPM, 460 Volts, 3 PH, ODP, 449TS, Marathon, 449TSTDN14033
$29,134.59
Out of Stock
449TSTDN7001-Marathon-Dealers Industrial    449TSTDN7001
450 HP, 3600 RPM, 460 Volts, 3 PH, ODP, 449TS, Marathon, 449TSTDN7001
$32,900.88
Out of Stock
449TSTDN7027-Marathon-Dealers Industrial    449TSTDN7027
500 HP, 1800 RPM, 460 Volts, 3 PH, ODP, 449TS, Marathon, 449TSTDN7027
$29,674.37
Out of Stock
449TSTFS14010-Marathon-Dealers Industrial    449TSTFS14010
350 HP, 3600 RPM, 460 Volts, 3 PH, TEFC, 447/449TS, Marathon, 449TSTFS14010
$31,678.85
Out of Stock
449TSTFS14040-Marathon-Dealers Industrial    449TSTFS14040
250 HP, 1800 RPM, 460 Volts, 3 PH, TEFC, 447/449TS, Marathon, 449TSTFS14040
$25,045.38
Out of Stock
449TSTFS14044-Marathon-Dealers Industrial    449TSTFS14044
350 HP, 1800 RPM, 460 Volts, 3 PH, TEFC, 447/449TS, Marathon, 449TSTFS14044
$28,382.15
Out of Stock
449TSTFS14045-Marathon-Dealers Industrial    449TSTFS14045
300 HP, 1800 RPM, 460 Volts, 3 PH, TEFC, 447/449TS, Marathon, 449TSTFS14045
$29,016.00
Out of Stock
449TSTFS16025-Marathon-Dealers Industrial    449TSTFS16025
400 HP, 3600 RPM, 460 Volts, 3 PH, TEFC, 447/449TS, Marathon, 449TSTFS16025
$66,904.53
Out of Stock

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