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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 »

Open-box items are products that were returned by customers, inspected in our shop, and then resold at a discount. Products look brand new and includes all original parts and manuals; original factory box might be less than perfect.
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L510-201-H1-N-Dealers Industrial-Teco
L510-201-H1-U-OPENBOX 1 HP, 230 Volts, 1 Phase, IP 20, Teco, L510-201-H1-U, Open-BoxOPEN-BOX ITEM 230 Volts 1 Phase Input, 230 Volts 3 Phase Output

FM50-203-C-Dealers Industrial-Teco
FM50-203-C-OPENBOX 3 HP, 230 Volts, 1 or 3 Phase, IP 20, Teco, FM50-203-C, Open-BoxOPEN-BOX ITEM 230 Volts 1 or 3 Phase Input, 230 Volts 3 Phase Output

N3-407-C-U-Dealers Industrial-Teco
N3-407-C-U-OPENBOX 7.5 HP, 460 Volts, 3 Phase, NEMA 1, Teco, N3-407-C-U, Open-BoxOPEN-BOX ITEM 460 Volts 3 Phase Input, 460 Volts 3 Phase Output