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Elko HRN-34 Single Phase Voltage Monitoring Relay DC 6…30V


  • DC operation
  • Under voltage and over voltage monitoring
  • Undervoltage setting 30…99% Vmax
  • 2-6% hysteresis
  • Adjustable trip delay 0…10 sec
  • 1 Changeover contact
  • Auxiliary self supplied


Serves to control supply voltage for appliances sensitive to supply tolerance, protection of the device against under/over voltage.

Monitoring relay series HRN-3x monitor levels of voltage in single-phase circuits. Monitored voltage serves also as supply voltage. It is possible to set two indipendent (all occurrences) levels of voltage, when exceeded the output is activated.

Adjustable time delay for all types is 0…10s (to eliminate short voltage drops or peaks)
Voltage Umin adjusted as % of Umax
3-state indication - LEDs indicating normal state and 2 fault states
Supply from monitored voltage (monitors level of its own supply)
1-MODULE, DIN rail mounting

Additional Information

Manufacturer Elko
Product Name / Options Price (ex VAT)
HRN-34 Call for Prices