E. Dold & Söhne GmbH & Co. KG

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E-Mail: dold-relays@dold.com

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IK 9173

Undervoltage Relay, Single-Phase

IK 9173


Nominal voltage

Time delay

Response value


  • 0047645
  • IK9173.11/240 AC220V 0,75UN4% 5-15M
The IK 9173 and SK 9173 voltage relays in the VARIMETER series monitor AC voltage networks for... more

Product description

The IK 9173 and SK 9173 voltage relays in the VARIMETER series monitor AC voltage networks for undervoltage. The measurement is very simple and does not require a lot of wiring, as no separate auxiliary voltage is required. Early detection of impending failures and preventive maintenance prevent costly damage and, as a user, you benefit from the operational reliablility and high availability of your system.

Technical specifications

Width: 17,5 mm
Operate delay: Yes
1- / 3-phase: 1
Nominal voltage max.: AC 230, DC 125 V
Auxiliary voltage: Without
Output contacts: 1 C/O contact
Enclosure design: Distribution board
Type: IK 9173


  • Preventive maintenance
  • For better productivity


  • According to IEC/EN 60255-1
  • Monitoring of undervoltage
  • Without auxiliary supply
  • Optionally fixed or settable response value
  • N.C. circuit operation
  • Optionally with off-delay t1
  • Optionally with on-delay t2
  • LED indicator for state of output relay
  • 1 changeover contact
  • Devices available in 2 enclosure versions:
    IK 9173: Depth 59 mm, with terminals at the bottom for installation systems and industrial distribution systems according to DIN 43880
    SK 9173: Depth 98 mm, with terminals at the top for cabinets with mounting plate and cable duct
  • Width 17.5 mm