E. Dold & Söhne GmbH & Co. KG

Tel.: +49 7723 654-0
E-Mail: dold-relays@dold.com

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Direct contact for orders

Tel.: +49 7723 654-454
E-Mail: ab@dold.com

Direct contact for technical questions

Tel.: +49 7723 654-459
E-Mail: rv@dold.com

Direct contact for shipping inquiries

Tel.: +49 7723 654-455
RK 9871

Undervoltage Relay

RK 9871

Contacts

Nominal voltage

Variant

  • 0062759
  • RK9871.72 3/N AC400/230V 50/60HZ

Technical specifications

Width: 17,5 mm
Operate delay: Yes
1- / 3-phase: 1, 3
Nominal voltage max.: 3/N AC 400/230 V
Auxiliary voltage: Without
Output contacts: 1 C/O contact, 2 C/O contacts
Enclosure design: Distribution board
Type: RK 9871

Advantages

  • Higher safety in buildings

Features

  • According to IEC/EN 60255-1
  • For installations according to DIN VDE 0100-718:2005-10 and DIN VDE 0108-100:2005-01
  • Detection of undervoltage in 3-phase systems
  • Without separately auxiliary voltage (internal supply from all 3 phases)
  • LED indication for für operation voltage and contact position
  • De-energised on trip
  • RK 9871.71: 1 changeover contact
    RK 9871.72: 2 changeover contacts
  • With fixed time delay of 0.5 s for fault indication
  • With fixed time delay of 1 min for reset
  • With fixed response value at AC 195.5 V
  • As option with test-button for function control
  • Width 17.5 mm