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Surge arrester MVR

Surge arrester for systems up to 1 kV

MVR is a surge arrester with metal-oxide (MO) resistors without spark gaps, designed and tested with reference to IEC 60099-4.

It is used for secure protection of medium voltage systems against overvoltages from atmospheric discharges and switching conditions.


  • Power electronics
  • High-voltage cable sheath
  • Low-voltage motors
  • Components of low-voltage secondary equipment

Why Hitachi Energy?

  • Over 100 years of experience in overvoltage protection
  • Local and global Hitachi Energy application support
  • Design life of more than 30 years
  • Own production of metal-oxide (MO) resistors
  • Excellent protection level with low residual voltage
  • Maintenance free

Brief performance data

    MVR K5 MVR K10 MVR G5 MVR G10
Maximum system voltage (Us) kV 1 1 1 1
Continuous voltage through arrester (Uc) kVrms 0.44-0.8 0.44-0.8 1.0-6.6 1.0-6.6
Rated voltage of arrester (Ur) kVrms 0.56-0.8 0.56-0.8 1.25-8.3 1.25-8.3
Nominal discharge current (In) kApeak 5 10 5 10
Applicable current   AC, DC AC, DC AC AC


For more details see the data sheet in downloads below.

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