MPR300 Mini Motor Protection Relay

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MPR300 is a Microprocessor based LT Motor protection relay. The relay has got inbuilt CTs for motor sizes up to 50KW (i.e 88 A current)

Protections offered:

  • Thermal Overload
  • Earth Fault
  • Single Phasing
  • Locked Rotor
  • Under Current


  • LEDs for trip indication.
  • Inbuilt CTs available
  • 4 selectable trip time curves for thermal overload
  • Test facility through front push button.
  • Manual reset facility through front push button.
  • With / Without fail safe mode


  • MPR 300 offers you greater security, operator safety through proper co-ordination in case of earth fault on motor feeder.
  • MPR300 is used for protection of motors widely used in fans, pumps, crushers, mills, compressors, belt conveyors, centrifuges, mixers, ventilators, escalators, motorized valves etc.