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E-Mail: dold-relays@dold.com

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MH 9397

Motor Load Monitor

MH 9397


Auxiliary voltage

Response delay

Measuring voltage

Measuring current


  • 0062046
  • MH9397.12/010 3AC24-400V AC12A
The Load monitor MK9397 and MH9397 of the varimeter family monitor reliably the load of motors... more

Product description

The Load monitor MK9397 and MH9397 of the varimeter family monitor reliably the load of motors as well as the function of 3 phase electrical users. If the measured value falls under or goes over the adjusted settings the corresponding output relay is energised. To avoid unnecessary tripping a response delay tv can be adjusted between 0 and 10 s. LEDs show the status of the output relays.

Technical specifications

Width: 45 mm
1- / 3-phase: 3
Measuring range max.: 12 A (8 kW)
Operate delay: Yes
Auxiliary voltage: AC
Output contacts: 2 x 1 C/O contacts
Enclosure design: Switch cabinet
Type: MH 9397


  • Preventive maintenance
  • For a evaluate time
  • Quicker fault locating
  • Precise and reliable
  • Overload detection, as option also with prewarning
  • Can also be used for underload monitoring
  • Simple adjustment and fault diagnostics
  • Space and cost saving


  • According to EN 60255-1
  • Active power measuring
  • Relay output
    MK 9397N: 1 changeover contact
    MH 9397: 1 changeover contact each for overload and prewarning
  • On delay
  • Closed circuit operation
  • As option open circuit operation
  • As option with plugable terminal blocks for easy exchange of devices
    - With screw terminals
    - Or with cage clamp terminals
  • MK 9397N: Width 22,5 mm
    MH 9397: Width 45 mm