Dold Italia S.r.l.

Via Privata Passo Pordoi, 5
20139 Milano
Italia
RK 9871

Undervoltage Relay

RK 9871

Contacts

Nominal voltage

Variant

  • 0062759
  • RK9871.72 3/N AC400/230V 50/60HZ
Monitoring of undervoltage in 3 phase voltage systems and switch over to emergency supply. altro

Descrizione del prodotto

Monitoring of undervoltage in 3 phase voltage systems and switch over to emergency supply.

Specifiche tecniche

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

Vorteile / Kundennutzen

  • Higher safety in buildings

Merkmale

  • 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