Voltage monitoring relay in 3P with adjustable levels

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50.34 €
Your price with tax
60.91 €
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HRN-54N | Voltage monitoring relay in 3P with adjustable levels


  • It serves to monitor voltage, phase failure and sequence in switchboards, protection of devices in 3-phase mains.
  • It is possible to set upper and lower level of monitoring voltage.
  • Adjustable time delay eliminates short voltage peaks and failures in the main.
  • Supplied from monitored voltage.
  • Faulty state is indicated by red LED and by opening of output relay contact.
  • Output contact 1x changeover / SPDT 8 A / 250 V AC1.
  • In case supply voltage falls below 60 %Un (UOFF lower level) relay immediately opens without delay.
  • HRN-54: supply from all phases which means that relay is functional also in case when one phase is faulty.
  • HRN-54N: supply L1, L2, L3-N, means that relay monitors also failure of neutral wire.
  • 1-MODULE, DIN rail mounting.


Technical parameters


  • Phase failure: Yes
  • Phase sequence: Yes
  • Overvoltage: Yes
  • Undervoltage: Yes
  • Asymmetry: x
  • Monitored range: AC 3 x 172-287 V
  • Supply voltage: 1x CO, 8 A
  • Housing: 1-MODULE
  • Power supply: from monitored voltage
  • Dimensions: 90 x 17.6 x 64 mm (3.5˝ x 0.7˝ x 2.5˝)


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ELKO EP, s.r.o., Holešov

We develop, manufacture and deliver complete solutions for your electrical wiring. Czech company with more than 23-year tradition is a brand iNELS Smart Home Solution. One of the most comprehensive solutions on the market brings together wireless solutions and intelligent bus wiring. With this system you control heating, air conditioning, lighting and everything is perfectly secure. We are here for you from design to implementation and configure the system, thanks to our team of trained experts and partners.

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