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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 »

 
 
Utilize closed loop cooling in tough industrial or outdoor applications with Pfannenberg’s ‘service-friendly’ cooling units.

Pfannenberg's DTS 3000 Series Cooling Units are driven to meet the demands of our North American NEMA market. These units meet the needs on indoor NEMA Type 12 applications, NEMA Type 3R/4 outdoor applications and NEMA Type 4/4x stainless steel for washdown
applications. 

Pfannenberg's revolutionary designed DTT Top Mount Cooling Units offer unique protection through our innovative, patented condensate management system. These units can be safely installed above critical components with peace of mind.

The DTI 6000 Series allows for Europeanstyle recessed mounting on enclosure doors and/or side panels on modular systems. These “click & fit” units reduce installation times by more than 90%.