BE1-50, Instantaneous Overcurrent Relay

Provides high-speed detection of phase and/or ground faults. Optional output configuration allows the relay to be used as a phase-selective fault detector.


  • Flexible pickup is continuously adjustable over a wide range.
  • Easily match system configuration with single-phase, two-phase-with-neutral, three-phase, and three-phase-with-neutral input configurations.
  • Minimize CT costs as a result of low sensing burden.
  • Reduced battery load with low burden power supply.
  • Accurate, repeatable, and reliable operation.
  • Simple HMI provides clear and intuitive settings for easy configuration.
  • LED targets provide clear annunciation of status.
  • Easily perform in-case system and device tests using test paddles.


Technical Resources


Case Studies