over-voltage protection relay / over-current / digital / panel-mount
SEL-351 Schweitzer Engineering Laboratories



  • Measured/monitored value:

    over-voltage, over-current

  • Other characteristics:

    digital, panel-mount


The SEL-351 Protection System has built-in Ethernet and IEEE C37.118 synchrophasors, and is ideal for directional overcurrent applications. Optional Mirrored Bits® communications and power quality monitoring add flexibility to solutions. The SEL-351 is the protection standard for utility and industrial electrical systems around the world

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