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M Family Modular Microprocessor Relays - Legacy

M Family Modular Microprocessor Relays


Manufacturing for these products have been discontinued

The M Family is a new generation of modular microprocessor protective relays based on a common platform. The M Family offers a competitive solution that combines protection, monitoring, widely accepted communications standards, and flexible configuration tools for many applications. Each product within the M Family may be used as a stand alone unit or as a component of an automated substation or industrial protection and control system.

  • Feeder protection, any voltage level
  • Main protection for small generators and motors
  • Backup/Auxiliary protection for transformers, motors, generators and busbars
  • Overload protection
  • Automatic transfer equipment
  • Load shedding and restoration schemes
  • Backup directional overcurrent protection
  • Reverse power protection
  • Synchrocheck

  • Monitoring and Metering
  • Current, voltage
  • Analog/digital oscillography (optional)
  • Event recording (optional)

  • User Interface
  • M+ Setup software for setting, monitoring
  • RS232 port, faceplate accessible (19.2 kbps, ModBus ® RTU)
  • RS485 rear port (19.2 kbps, ModBus ® RTU)
  • LED dot matrix display and keypad