over-voltage protection relay / under-voltage / over-current / frequency
SEL-751A Schweitzer Engineering Laboratories



  • Measured/monitored value:

    over-voltage, under-voltage, over-current, frequency

  • Other characteristics:

    digital, programmable, configurable


Feeder Protection Relay
The SEL-751A Feeder Protection Relay is the right solution for industrial and utility feeder protection, with flexible I/O options, easy mounting, and fast settings.

The SEL-751A provides complete feeder protection, with overcurrent, overvoltage, undervoltage, and frequency elements. Easily upgrade protection without cutting or drilling existing cutouts with a small form factor and multiple mounting adapters. Quickly integrate into serial- or Ethernet-based communications with IEC 61850, Mirrored Bits communications, DeviceNet, and other protocols.