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Home > Grid Automation > Protection Relays > Legacy Single Function > DIAC/DIFC/DSFC - Legacy
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Single Phase Digital Overcurrent Protection

DIAC/DIFC/DSFC Single Phase Digital Overcurrent Protection

Manufacturing for DIAC/DIFC/DSFC has been discontinued. As an alternative, please refer to the 350, P14N or P15D for self-powered applications.

The DIAC, DIFC, and DSFC units are single phase, digital microprocessor based, self-powered, non-directional overcurrent relays. They provide time and instantaneous overcurrent protection for phase or ground faults. They are designed to be used by industrial and utility power systems for applications including feeders, transmission lines, AC machines, transformers, or any facility with medium voltage switchgear.

  • Industrial and utility power systems
  • Feeders, transmission lines, AC machines, transformers
  • Facilities with medium voltage switchgear
  • Protection and Control
  • Phase or ground overcurrent
  • Separate TOC and IOC protection
  • Wide pickup setting ranges
  • 16 TOC curve characteristics
  • RMS sensing (TOC)
  • Reset characteristic selection
  • User Interface
  • Pickup status LED
  • TOC and IOC latched indicators