DURA-Drive: NEMA 3R / For Outdoors

  • Revolutionary, patent-pending cooling design
  • 1 - 200 HP @ 480 VAC packaged vfd
  • NEMA Type 3R enclosure
  • Built-in 3% reactor mitigates the reflective harmonics and increases the operation life of the drive
  • All standard door controllers operate at 24 VDC for increased safety
  • All drives are rated for 40 degrees C (50 degrees C at heavy duty rating)
  • Ability to run 150% overload for one minute and has a 3000 second (max) accel / decel time
  • Support easy configuration via door mounted key pad HMI with plain text display
  • Speed reference can be controlled via potentiometer or remotely using an analog signal
  • For security the enclosure can be padlocked and the HMI can be password-protected

Product Overview


The all new DURA-Drive packaged VFD from SAI Drives is a market leader in performance, convenience and durability. Our off-the-shelf, 1-200 HP, NEMA Type 1 and 3R packaged drive provides a hassle-free install, dependable power, long-life and low total cost of ownership. Test proven to run at 100% load even in the harshest of conditions, the DURA-Drive is the ideal solution for most applications.


The DURA-Drive product line packages a Vacon VFD in an indoor NEMA 1 or outdoor NEMA 3R enclosure. Featuring a revolutionary cooling design our patent-pending enclosure maintains operating temperature without supplementary cooling fans. The fan less design removes components that are prone to fail plus removes the need to perform time consuming and expensive routine drive maintenance. The DURA-Drives delivers an extended run-time and low total cost of ownership.

As per UL Industrial Control Panels - 508A reference 21.2.2, the DURA-Drive design incorporates a side vent to exhaust possible heated air/gases away from the operator area.


  • 1-200 HP @ 480 VAC
  • Fully rated 3% AC input reactor to protect VFD & reduce harmonics
  • 24 VDC control voltage for increased operator safety
  • Flange mount circuit breaker operator
  • Control power, run and fault pilot lamps
  • Door mounted keypad
  • Start, Stop and Reset push buttons
  • Hand Off Auto Selector Switch
  • Easy to install and simple to operate
  • Quality Components
  • Separate VFD output power terminal blocks for ease of installation
  • Easy to use programmable keypad with parameter copy and save functions
  • Input circuit breaker protection
  • 1 year warranty


  • 230 VAC or 575 VAC line input voltages
  • Supplemental input fuses
  • Raycap VFD Surge Protection
    • Raycap SPD's reduce VFD damage from transients such as lightning or capacitor switching
  • Output Reactor (model dependent)
  • Encoder card (closed loop)
  • Communication I/O boards
    • Profibus
    • CANOpen
    • DeviceNet
    • MODbus
    • Ethernet/IP
  • Floor stand kit (model dependent)
  • Extended warranty


UL 508A design


  • Industrial
  • Manufacturing facilities
  • Distribution centers
  • HVAC / pump control
  • Conveying
  • Water & Waste Water
  • Schools / Colleges
  • Office Buildings
  • Artificial lifts
  • Food & Beverage
  • Aggregate
  • Agriculture / Irrigation
  • Cooling towers
  • Fish farms

More Info

For more information please contact us at 281.516.3130 or

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Downloads for DURA-Drive



Configure and Buy

Use the drop-down selections to customize your DURA-Drive, then click 'add to cart' to start the checkout process.


  1. Select Enclosure Type
  2. Select Custom Options

To learn more about normal duty and heavy current loads please click here