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    056T17D5336
0.5 HP, 1800 RPM, 208-230/460 Volts, DP, 56, Rigid, Marathon, G905
$367.77
Out of Stock
Dealers Electric-Marathon    056T17D5345
0.5 HP, 1800 RPM, 208-230/460 Volts, DP, 56, Resilient Base, Marathon, G140
$379.28
056T17DRR70021A1-Marathon-Dealers Industrial    056T17DRR70021A1
0.5 HP, 1800 RPM, 208-230/460 Volts, ODP, 56, -, Marathon, G905A
$426.80
Dealers Electric-Marathon    5K42HN4089X
0.5 HP, 1725 RPM, 208-230/460 Volts, DP, 56, RB, Marathon, K1408
$363.88
Dealers Electric-Marathon    5K42HN4106
0.5 HP, 1725 RPM, 208-230/460 Volts, DP, 56, WB, Marathon, K116
$295.61
Out of Stock
Dealers Electric-Marathon    5K42JN3050
0.5 HP, 1725/1140 RPM, 460 Volts, DP, 56, RB, Marathon, K546
$449.24
Dealers Electric-Marathon    5K42JN3051
0.5 HP, 1725/1140 RPM, 200-230 Volts, DP, 56, RB, Marathon, K544
$403.05
Out of Stock
Dealers Electric-Marathon    5KS49HN4077
0.5 HP, 1725 RPM, 208-230/460 Volts, DP, 56, WB, Marathon, E12D4
$429.45
Out of Stock
Dealers Electric-Marathon    056T17D2115
0.5 HP, 1800 RPM, 575 Volts, DP, 56C, C-Face Footless, Marathon, G242
$313.20
Out of Stock
Dealers Electric-Marathon    5K42HN4032
0.5 HP, 1725 RPM, 208-230/460 Volts, DP, 56C, WB, Marathon, K1307
$336.36
Out of Stock
Dealers Electric-Marathon    5K42HN4139
0.5 HP, 1725 RPM, 208-230/460 Volts, DP, 56J, N/R, Marathon, K553
$419.05
Out of Stock
Dealers Electric-Marathon    056T17D2118
0.5 HP, 1800 RPM, 575 Volts, DP, 56Z, Resilient Base, Marathon, G961
$307.12
Dealers Electric-Marathon    5K42HN4128
0.5 HP, 1725 RPM, 208-230/460 Volts, TEAO, 56, RB, Marathon, K284
$416.68
Dealers Electric-Marathon    056T17W5344
0.5 HP, 1800 RPM, 208-230/460 Volts, TEFC, 56, Rigid, Marathon, N322
$414.36
Out of Stock
Dealers Electric-Marathon    5K35MNB117
0.5 HP, 1725 RPM, 208-230/460 Volts, TEFC, 56, WB, Marathon, K158
$314.60
Dealers Electric-Marathon    5K42HN4134
0.5 HP, 1725 RPM, 575 Volts, TEFC, 56, WB, Marathon, K426
$282.10
Out of Stock
Dealers Electric-Marathon    056T17F5321
0.5 HP, 1800 RPM, 208-230/460 Volts, TEFC, 56C, C-Face, Removable Base, Marathon, G581
$419.21
Out of Stock
Dealers Electric-Marathon    056T17F5336
0.5 HP, 1800 RPM, 575 Volts, TEFC, 56C, C-Face, Removable Base, Marathon, K705
$419.21
Out of Stock
Dealers Electric-Marathon    056T17F5349
0.5 HP, 1800 RPM, 208-230/460 Volts, TEFC, 56C, C-Face, Removable Base, Marathon, D452
$920.83
Dealers Electric-Marathon    056T17W99005
0.5 HP, 1800 RPM, 208-230/460 Volts, TEFC, 56C, C-Face Rigid, Marathon, N632
$516.90
Out of Stock

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