Protection of 3 Phase devices against Over voltage, Under voltage, Single Phasing, Over Frequency, Under Frequency, Reverse Phasing & unbalance supply are one of the major issue in electrical systems. For safe running of 3-phase devices, special protections that keep a continuous watch on supply conditions are very essential. The major cause of maximum load burn-out is overloading which occurs due to unbalance supply, Single Phasing & Reverse phasing conditions. VFR3P detects such Conditions & protect the load from burn out. 'Proton's VFR 3P' offer above protections along with 3 digit display showing R-Y,Y-B,BR voltages in scanning mode with precise accuracy.
Low/High voltage tripping to ensure trouble free running of 3-phase Loads, And also protection is provided against Over /Under Frequency


  • Supply Voltage: 90-270 VAC/DC or 20-60 VDC.
  • Operation Sequence: Multiple sequence option with site selection facility.
  • Push Button Controls: On board Test, Silence(optional),Accept, Reset buttons.
  • No. of windows: 1 Window.
  • Window size: 65 x 75 mm.
  • No of LED`s per Window: Super bright 4 LED`s in Parallel.
  • Power Consumption: 0.8 VA per window.
  • Terminals: Suitable for 0.2 to 2.5 sq. Mm. Cable.
  • Scan time: Less than 10 ms.
  • Response Time: Less than 10 ms.
  • Flash Rate: 60 Flash per min Fast Flashing 30 flash per min slow flashing
  • Fault Input Contacts: Potential free contact needed. (LIVE Input Fault Contact can be Optional ).
  • Output Connection: Remote TEST, SILENT, ACCEPT,RESET.
  • Supply Voltage: 230 VAC +/-20%
  • Input voltage: 12 VDC (9 to 30 VOC)
  • Mounting:Plastic Panel
  • Output Relay Contacts: 2 No`s potential free, Non trip group & trip group. (Annunciator fail Optional.)
  • Enclosure: ABS Enclosure with high strength.
  • Output Contact Rating: 7 amps at 230 VAC Resistive.
  • Noise Immunity: 2KV as per IEC 61000-4-12.
  • Impulse Tests: 5KV as per IEC 60255 -5.
  • Environmental Tests: As per IS 9000.
  • Max. Ambient Temp: 0-60 Deg C.
  • Humidity: 95% R.H.
  • Window Colour: Red, Yellow, Green, Blue, Amber & white.
  • Facia Type: Printed on Photo film replaceable from front(optional)
  • Cutout size: 92(W) x 92(H) mm.
  • Over all Size:96(W) x 96(H) x 160(D) mm.