Single Phase Voltage Monitoring Relay RN-111M


Single Phase Voltage Monitoring –

Voltage Type AC
Voltage (V) 220 – 240
Number of Poles 1 Pole + N
Application Single Phase Voltage Monitoring
Display Digital 3 x 7 segment LED display
Relay Output 1 x SPDT (1NO+1NC) 16A direct, any current through contactors
Type Under voltage, Over voltage, Neutral break protection

10 in stock


RN-111M voltage monitoring relay is designed to de-energize an industrial/appliance single phase 220 – 240V/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 contactor, depending on the wattage.

The relay can operate in four independent modes:

  • Maximum and Minimum 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 recoveryest

Additional Information:

  • Item Code (SKU): RN-111M
  • Port of Dispatch: New Delhi, India

Main Technical Specifications

Rated voltage, V


Rated voltage frequency, Hz

47 – 65

Harmonical configuration (nonsinusoidality) of power supply voltage

EN 50160

Adjustment ranges:

– minimal voltage tripping range (Umin), V

– maximal voltage tripping range (Umax), V

– autoreclosing time delay (Ton), sec


160 – 230

240 – 280

5 –900

Fixed tripping time delay in case maximal voltage fault (Umax) detected, sec


Fixed tripping time delay in case minimal voltage fault (Umin) detected, sec


Fixed tripping time delay in case of voltage decrease more than 60V than the adjusted minimal voltage tripping threshold (Umin), sec


Fixed tripping time delay in case of voltage increase more than 30V than the adjusted maximal voltage tripping threshold (Umax), sec


Maximal commutation current (active power load), A


Tripping Voltage level accuracy, V

up to 3

Minimal operation voltage level at which RN-111M will keep working, V


Maximal operation voltage level at which RN-111M will keep working, V


Voltage hysteresis, V

4 – 5

Rower consumption (when de-energization load), W

 to 3.5

Commutation life of the output contacts:

– under 16A power load,  times (no less than)

– under 5A power load,  times (no less than)


100 000

1 000 000

Outer dimensions, (2 S-modules),

 Fiqure 1

Weight, kg, no less than


Casing material – self-extinguishing plastic
The device preserves functionality in any position within the space

Parameters of the integrated relay output terminals

Maximal current

at ~ 250V AC

Maximal power when

contacts are closed

Maximal commutation


Maximal allowed

AC/DC Voltage

Maximal current

at 30V DC

Cos ф = 0.4

Cos ф = 1

5 А


5000 VA 4000 VA 380/150 V

5 А

No harmful substances in excess of the maximum permissible concentration is available.

RN-111M complies with requirements:

IEC 60947-1:2004; ІEC 60947-6-2:1992; CISPR 11:2004; IEC 61000-4-2:2001

Additional information

Weight 0.2 kg

2 pole MCB size (W:38 x H:90 x D:59.5 mm)




DIN rail


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