Monitoring / Protection Relays

  • It is used to monitor the value of alternating or direct voltage in 1-phase circuits.
  • Supply voltage from monitored voltage.
  • Monitors voltage exceeding the upper voltage level (Umax) and falling below the lower voltage level (Umin) – according to the selected function.
  • Smooth adjustment of both voltage levels – the lower level Umin is set in % of the upper-level Umax.
  • Adjustable time delay (to eliminate short-term voltage drops and spikes).
  • Option to select functions with fault state memory (Latch).
  • The fault state memory can be reset by the control input (R).
  • Measures true root mean square value of the voltage – TRUE RMS.

Technical parameters

  • Overvoltage: Yes
  • Undervoltage: Yes
  • Monitored range: AC 48 – 276 V
  • Output contact: 1x CO, 16 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˝)

Download Datasheet

Datasheet_HRN-31, HRN-32-2, HRN-36, HRN-39


Showing 1–9 of 15 results

HRN-31
HRN-31/2

Voltage monitoring relay
Multifunction, range 160-276 AC/DC, 1/2 output(s)

$67,50$72,20

HRN-32/2

Voltage monitoring relay
Multifunction, range 160-276 AC/DC, 2 outputs

HRN-36
HRN 36/2

Voltage monitoring relay
Multifunction, range 12-30 DC, 1/2 output(s)

$77,90$82,30

HRN-39
HRN-39/2

Voltage monitoring relay
Multifunction, range 80-150V AC/DC, 1/2 output(s)

$67,90$72,20

HRN-56

Voltage monitoring relay in 3P
3-wire, adjustable UV, phase failure/sequence,
3x208/240/400/480/575V

$64,30$110,40

HRN3-70

Voltage monitoring relay in 3P
Selectable range 190-500V, adjustable time delay 0.3-30s, 2 outputs

HRN3-80

Voltage monitoring relay in 3P
Selectable range 208-480V, adjustable time delay 0.3-30s, 2 outputs

HRN3-81

Voltage monitoring relay in 3P
Fixed range 208-480V, adjustable time delay 0.3-30s, 2 outputs

PMR1-31
PMR1-31/2

Voltage monitoring relay
Multifunction, range 160-276 AC/DC, 1/2 output(s)

$107,70$111,90