Product Details:

Voltage TypeAC
Voltage (V)220 – 240
Number of Poles2 Pole
ApplicationSingle Phase Voltage Monitoring (wall mounting type)
Current (Amps)32A
Contact FormSPDT
TypeUnder voltage, Over voltage, Neutral break protection

RN-102 single phase voltage monitoring relay is designed to de-energize an industrial/appliance single-phase 220V/50Hz load in case of inadmissible voltage variations in the mains with subsequent automatic re-energizing after the circuit parameters recovery. Load is connected to the relay either directly via relay terminals or through a magnetic starter, depending on the wattage.

The relay can operate in four independent modes:

  • Voltage monitoring relay
  • Minimum voltage monitoring relay
  • Maximum voltage monitoring relay
  • Time relay with a restart delay

The device front panel features load status indicator (on/off) and three-digit, seven-segment display, which displays (depending on the device status):

  • Actual RMS voltage
  • Accurate value of the set-up parameter
  • Time remaining till automatic load re-energizing
  • Emergency de-energizing the load (RMS voltage flashing)

The variable pot knobs on the front panel allow for setting:

  • The maximum allowable voltage tripping threshold
  • The minimum allowable voltage tripping threshold
  • Time delay for load re-energizing after the circuit parameters recovery

The RN-102 equipment includes a surge protector which protects the switched load against high frequency and high voltage impulse interference.

Documentation for this device

Additional Information:

  • Item Code: RN-102
  • Port of Dispatch: New Delhi


Rated voltage, V240
Rated voltage frequency, Hz47 – 65
Harmonical configuration (non-sinusoidality) of power supply voltageEN 61000-3-2 (IEC 1000-3-2)

Adjustable settings ranges:

–  Minimal voltage tripping threshold (Umin), V

–  Maximal voltage tripping threshold (Umax), V

–  Auto-reclosing time delay, sec

180 – 240

250 – 300

5 –900

Device level protectionIP30
Fixed tripping time delay when input voltage exceeds the minimal tripping threshold (Umin), sec7
Fixed tripping time delay when input voltage exceeds the maximal tripping threshold (Umax), sec1
Fixed tripping time delay in case of voltage decrease more than 60V than the adjusted minimal voltage tripping threshold (Umin), sec0.12
Fixed tripping time delay in case of voltage increase more than 30V than the adjusted maximal voltage tripping threshold (Umax), sec0.12
Maximal commutation current (active power load), A (not less than) AC-1 type32
Accuracy for tripping basing the voltage level measurement, V< 3

Minimal operation voltage level at which PH-102 will keep working, V

Maximal operation voltage level at which PH-102 will keep working, V



Voltage hysteresis, V   4
Protection class against electric shockII
Overvoltage categoryII
Permissible contamination levelII
Nominal voltage of isolation, V450
Rated impulse withstand voltage, kV2.5
Guide section of connecting plugs, mm20.3-3.3
Maximum moment of an inhaling of screws of connection terminal, N*m1.2
Operational temperature range, °Сfrom -30 to + 55
Total power consumption, mA< 15

Commutation lifetime of the output contacts:

– under 32A power load, times (not less than)

– under 5A power load, times (not less than)

100 000

1 000 000

Outer dimensions, mm80 х 120 х 43
Net weight, kg0.250
Wall mounting in vertical position in order to read the digits of the front panel indicator