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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F442-Century-Dealers Industrial    F442
0.5 HP, 1800 RPM, 115 Volts, 1 PH, ODP, 56, Century, F442
$166.39
Out of Stock
F443ES-Century-Dealers Industrial    F443ES
0.75 HP, 1800 RPM, 115 Volts, 1 PH, ODP, 56, Century, F443ES
$250.35
Out of Stock
F444-Century-Dealers Industrial    F444
0.167 HP, 1800 RPM, 115 Volts, 1 PH, TEFC, 48, Century, F444
$226.34
Out of Stock
F445-Century-Dealers Industrial    F445
0.167 HP, 1200 RPM, 115 Volts, 1 PH, TEFC, 48, Century, F445
$187.39
Out of Stock
F446-Century-Dealers Industrial    F446
0.25 HP, 1800 RPM, 115 Volts, 1 PH, TEFC, 48, RESILIENT, Century, F446
$198.87
Out of Stock
F447-Century-Dealers Industrial    F447
0.25 HP, 1800 RPM, 115 Volts, 1 PH, TEFC, 48, Century, F447
$237.41
Out of Stock
F448-Century-Dealers Industrial    F448
0.33 HP, 1800 RPM, 115 Volts, 1 PH, TEFC, 48, RESILIENT, Century, F448
$186.32
Out of Stock
F449-Century-Dealers Industrial    F449
0.5 HP, 1800 RPM, 115 Volts, 1 PH, TEFC, 56, Century, F449
$221.25
Out of Stock
F450-Century-Dealers Industrial    F450
0.5 HP, 1800 RPM, 115 Volts, 1 PH, TEFC, 56, RESILIENT, Century, F450
$261.32
Out of Stock
F451-Century-Dealers Industrial    F451
0.5/0.25 HP, 1800/1200 RPM, 115 Volts, 1 PH, TEFC, 56, DOUBLE SPEED, Century, F451
$232.09
Out of Stock
F500L-Century-Dealers Industrial    F500L
0.33 HP, 1800 RPM, 115/230 Volts, 1 PH, TENV, 48Z, RESILIENT, Century, F500L
$265.38
F501-Century-Dealers Industrial    F501
0.5 HP, 1800 RPM, 230/115 Volts, 1 PH, TEAO, 56Z, RESILIENT, Century, F501
$331.76
F502V1-Century-Dealers Industrial    F502V1
0.5 HP, 1800 RPM, 115/230 Volts, 1 PH, TEAO, 56, RESILIENT, Century, F502V1
$255.86
Out of Stock
F505-Century-Dealers Industrial    F505
0.5 HP, 1800 RPM, 115 Volts, 1 PH, ODP, 56, RESILIENT, Century, F505
$320.76
Out of Stock
F661-Century-Dealers Industrial    F661
0.25 HP, 1800 RPM, 115 Volts, 1 PH, TENV, 56, Century, F661
$330.44
F670AV1-Century-Dealers Industrial    F670AV1
0.5 HP, 1800 RPM, 115 Volts, 1 PH, ODP, 56Z, RESILIENT, Century, F670AV1
$298.76
F671-Century-Dealers Industrial    F671
0.5 HP, 1800 RPM, 115 Volts, 1 PH, ODP, 56, RESILIENT, Century, F671
$234.43
Out of Stock
F674-Century-Dealers Industrial    F674
0.33/0.09 HP, 1800/1200 RPM, 115 Volts, 1 PH, ODP, 56, DOUBLE SPEED, RESILIENT, Century, F674
$311.78
F675-Century-Dealers Industrial    F675
0.5 HP, 1800 RPM, 115 Volts, 1 PH, ODP, 56, RESILIENT, Century, F675
$236.50
Out of Stock
F678-Century-Dealers Industrial    F678
0.5 HP, 1800 RPM, 115 Volts, 1 PH, ODP, 56, RESILIENT, Century, F678
$238.22
Out of Stock

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