E. Dold & Söhne GmbH & Co. KG

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E-Mail: dold-relays@dold.com

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MK 9300N

Multifunction measuring relay

MK 9300N


Auxiliary voltage

Terminal type

Measuring voltage

Measuring current

Approvals and Markings


  • 0063630
  • MK9300N.11/022 3AC24-400V AC12A
The universal measuring relays MK 9300N / MH 9300 of the VARIMETER PRO series monitor up to 9... more

Product description

The universal measuring relays MK 9300N / MH 9300 of the VARIMETER PRO series monitor up to 9 parameters simultaneously. These are under-, over-voltage, voltage range, voltage asymmetry, under-, overcurrent, cos phi, effective-, apparent- and reactive power, frequency and phase sequence, The measurement in 3-phase or single-phase systemes is very simple and without extensiv wiring. Because of the menue structure the multifunctional measuring relays can be used easyly and intuitively.
The early detection of up-coming break downs and preventive maintenance avoid expensive damages. As user you profit from the reliability and availability of your plant.

Technical specifications

Width: 22,5 mm
1- / 3-phase: 1, 3
Standard measuring range: 3 AC 24 - 400 V
Measuring range max.: 400 V
Auxiliary voltage: DC
Output contacts: 1 C/O contact
Operate delay: Yes
Enclosure design: Switch cabinet
Type: MK 9300N


  • Min-, Max. value or window monitoring
  • Simultaneous monitoring of up to 9 different parameters
  • Simple configuration and fault diagnostic
  • Different fault indications
  • Large measuring range 3 AC 24 ... 690 V
  • Auxiliary voltage ranges DC 24 V, AC 230 V or AC/DC 110 ... 400 V
  • Early detection of irregular states
  • Space and cost saving
  • Reduced wiring


  • Multifunction measuring relay acc. to EN 60255-1
  • Voltage monitoring (1- and 3-phase)
  • Current monitoring
  • Frequency monitoring
  • Power factor cos phi
  • Phase sequence, phase failure, asymmetry
  • Effective-, reactive- and apparent power
  • Start up time delay, on delay
  • Adjustable hysteresis 0.2 ... 50 % of response value
  • Manual reset
  • LCD for indication of the measuring values
  • Relay output
    MK 9300N: 1 changeover contact
    MH 9300: 2 x 1 changeover contacts
  • Relay function selectable (energized/de-energized on trip)
  • As option with plugable terminal blocks for easy exchange of devices
    - with screw terminals
    - or with cage clamp terminals
  • MK 9300N: Width 22,5 mm