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 »
VK17-Dealers Electric-Emerson
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VK17-Dealers Electric-Emerson Emerson-VK17-image-Dealers-Industrial Emerson-VK-17-Name-Plate  
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3 HP, 460 Volts, 3 Phase, NEMA 1, Emerson, VK17

Model #: VK17  
460 Volts 3 Phase Input, 460 Volts 3 Phase Output
Stock:  0
HP : 3
Enclosure : NEMA 1
Input Voltage : 460
Input Phase : 3
Manufacturer : Emerson
Output Voltage : 460
Output Phase : 3
Model : -
Item Condition : New Surplus
Weight:  8 lbs
Our Price:
Out of Stock

Emerson/U.S. Motors Varidyne 2 Variable Frequency Drive


  • Open Loop Vector Control: Speed or Torque
  • Switching Frequency Range: 3k Hz to 18k Hz
  • Model VFKC3400300
  • (SKC3400300 on Nameplate)
  • 460 Volts 3 Phase Input, 460 Volts 3 Phase Output
  • Input Current 9.5A
  • Output Current 7.2A
  • Users Manual/Technical Data
  • Getting Started Guide


  • Pumps
  • Compressors
  • Conveyors and material handling
  • Fans and Blowers
  • Agitators
  • And other applications requiring precise speed control without a feedback device


    VARIDYNE™ 2—Simple and compact, yet powerful.
  • Easy to set up – all the parameters you need for typical applications are shown on the front facia – it could not be easier
  • Easy installation – simple panel mounting
  • Simple connections – easy access terminals with clear marking
  • Simple start up – simple push button set up – no need for complex programming
  • Built-in EMC filter
  • Display Keypad included as standard
  • Software and Documentation CD included as standard
  • Communications Port RS485 – Modbus RTU as standard

    Simple to Use.
  • VARIDYNE™ 2 is an easy drive – easy to connect, easy to configure and easy to install.
  • Easy to connect - All connectors are generously sized and clearly labeled.
  • Easy to configure - The configuration settings you need for most applications are detailed on the front facia of the drive.
  • Easy to install - Flexibility allows you to install the drive in the best way for your application.
  • Provision for "through hole mounting" is standard from Size 2 upwards.

    Compact to Fit.
  • VARIDYNE™ 2 is a compact drive – a compact footprint with space saving features.
  • VARIDYNE™ 2 gives you back valuable space with its compact footprint and extra features that can eliminate the need for additional components such as EMC filters.

    Power to Perform.
  • VARIDYNE™ 2 – Reliable and productive with exceptional motor performance, as you would expect from the world's leading motor manufacturer — Emerson Motor Technologies/U.S. Motors.

Emerson Motor Technologies/U.S. Motors® has a longstanding reputation for manufacturing high-quality motors. VARIDYNE™ 2 is designed with the same principles to give you an easy-to-apply, high-performance, open-loop drive for your standard AC motors. Our state-of-the-art VARIDYNE™ 2 drives automatically measure the motor characteristics on power-up – ensuring you get the best motor performance straight out of the box, every time. How could we make it easier?

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