• -₹125.00
Model  : PFR

Model : PFR

₹400.00 Save ₹125.00
Tax included


Voltage Sensing type
ABS Body
Compact design
Preventor ON Indication
Dry Relay Contacts
Compatible with all 3 Phase Starters
Supply sequence reverse blink indication


1HP to 20HP

This is a voltage sensing type Single Phase Preventor that turns OFF the 3 Phase Motor during the loss of supply phase. This product protects the motor against single phasing. It is a mandatory add on to any 3 Phase motor starter. The relay contacts C1 and C2 (Normally Open) will close as soon as the supply voltage in the proper sequence is detected in all the 3 lines. The Preventor ON LED turns ON. The motor ON led turns OFF and C1 and C2 open in case of a loss in phase.


Weight:300 Grams

Length: 4.9 cms

Breadth: 10 cms

Height: 4.5 cms


Red and Yellow wires to the Incoming 2 Phase Power Supply

Red and Black (C1 and C2) 2 core wires across (in parallel) to the ON/Start Push button of your motor starter

Technical Specifications:

3 Phase 440V Incoming Power Supply
Relay Contacts C1 and C2 are Normally Open Dry Contacts
Operating Voltage Range: 220 to 450V AC
Tripping time: Less than 2 seconds
Minimum wire size for the relay contacts - 0.5 sq mm


Naren Single Phase Preventor Model PFR is used in the majority of 3 Phase motor starters as a mandatory protection mechanism against single phasing. This product protects the motor quickly responds to single phasing by turning OFF the motor starter instantaneously when the single phasing is detected. It is very compact, economical and easy to install.


This product carries a warranty of 6 months from the date of purchase. Any issues within the warranty period will be attended to free of cost at our works in Bangalore. Post the warranty period, the product will be eligible for the paid service at our works. The invoice copy acts as a warranty card. The shipping of the product for repair will have to be done by the consumer.

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