Factory Automation

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Protection Relays -
MELPRO-A Series

Made for reliability, the MELPRO-A series.

MELPRO-A series is a protective relay for high-voltage power reception and distribution facilities. The high reliability and upgraded functions support design, operation and maintenance of the systems.

More Details

  1. 1.Easy Renewal
  2. 2.High visibility and operabiliy design
  3. 3.Saving of maintenance work

Some products are regionally specific; for up to date sales availability, please check your local web page.

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Product List

Overcurrent Relay MOC-A3
  • 2 phases overcurrent protection
  • 2 types of instantaneous time overcurrent protection (50)
  • 4 types of inverse time overcurrent protection (51)
Earth Fault Directional Relay MDG-A3, A4
  • Directional earth (ground) fault protection (67G)
  • Wider setting than the existing model
Earth Fault Overcurrent Relay MGR-A3
  • Earth (ground) overcurrent protection (50G)
  • Wider setting than the existing model
Under Voltage Relay MUV-A3
  • 1 phase undervoltage protection (27)
  • Unnecessary power supply
Over Voltage Relay MOV-A3
  • 1 phase overvoltage protection (59)
  • Unnecessary power supply
Earth Fault Overvoltage Relay MVG-A3, A4
  • Earth (ground) overvoltage protection (64/59G)
  • Wider setting than the existing model

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