SV1 - HVAC VFD Control Panel

By Yin on 12th Aug 2014

What is an SV1

The intelligent design of the MDI (Motor Drives International) enclosed drive panels, including the SV1 system, have been engineered with you and your toughest electrical applications in mind giving you the peace of mind you need from your control panel.

The SV1 control panel, designed to be only 12" wide, is the slimmest standard enclosed VFD panel available in the MDI family. With a durable Mitsubishi variable frequency drive circuit breaker, and options for many control protocols, the SV1 is a smart choice for HVAC or pumping applications.

The SV1 features include a full function keypad, remote I/O capability, operator devices, and pad-lockable through door circuit breaker disconnect handle. Optional add-ons include 3% or 5% line reactors, three contactor bypass, advance numeric keypad, and many more.

Inside view of the small SV1

Pad-lockable door handle - circuit breaker disconnect

LED lights outside the panel door to show the real-time status of the system

Mitsubishi standard control keypad

Mitsubishi F series VFD is the standard equipment

Left: Circuit breaker disconnect / Right: 5% Line reactor

Left: Control Transformer / Right: 5% Line reactor

Three contactor bypass


  • 12" wide NEMA 1 ventilated enclosure
  • All components housed in one single enclosure, no additional wiring or boxes
  • Easy installation
  • 3 lines in & 3 lines out
  • UL508A listed
  • Remote I/O capability
  • Two optional cards can be installed simultaneously
  • Soft PWM for peak voltage mitigation at motor terminals and quiet operation
  • Full function keypad - operate the VFD without opening the panel
  • 3% (standard) or 5% (optional) line reactors available to reduce power surges and electrical noise up to 65%
  • Three contactor bypass (optional) electrically and mechanically interlocked, allows the motor to run across the line in case of a VFD failure
  • Door-interlocked input circuit breaker disconnect - provides additional safety by powering down the equipment before opening the panel and allowing OHSA lockout
  • Embossed numbering system - each wire is uniquely identified for ease of troubleshooting
  • 22mm door operator switches - power on and off and make adjustments without opening the panel


  • Available from 0.5HP to 40HP, at 230V or 460V
  • Frequency: 50 or 60Hz
  • Overload rating: 110% for 60 seconds, 120% for 3 seconds (additional overload ratings optional)
  • Standard equipment: Mitsubishi F700 series VFD (other options available)
  • Standard ambient operating temperature: 40°C
  • 1 year standard warranty (extended warranties optional)

Shop our SV1 series VFD control panel inventory now!

Also check out the other two VFD control panel series:

FF1 Series - Pump and Fan VFD Control Panels

F3R Series - NEMA 3R Outdoor Rated Panels