Voltage monitoring relays in 3P with adjustable levels

Your price
52.10 €
Your price with tax
63.04 €
In stock
Order code


HRN-57N | Voltage monitoring relays in 3P with adjustable levels

  • It serves to monitor voltage in a switchboard, protection of devices in 3-phase main.
  • It monitors value of voltage in 3-phase main.
  • It is possible to set upper and lower level independently.
  • Adjustable time delay eliminated short voltage peaks and failures in the main.
  • The device is supplied from monitored voltage.
  • Faulty state is indicated by red LED and by breaking output relay contact.
  • Output contact 1x changeover / SPDT 8 A / 250 V AC1.
  • Relay doesn’t monitor phase sequence.
  • HRN-57: supply from all phases, means that relay is functional also in case of failure in one phase.
  • HRN-57N: 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: x
  • 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˝)
Documents in current location:
  • No documents

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.

Copyright © ABRA ESHOP 2015 | Contact | Business conditions | | | Downloads | About us