Phase Failure Relay




We as a Manufacturer, Exporter and Supplier of Phase Failure Relay offer you the absolute quality. Type PFV Phase Failure Relay is better known as Single Phasing Preventer. In the event of either disconnection of a line to the motor or the reversal of motor connections in phase, it activates right away and protects the motor. The components used in the manufacturing are ensured to be of the first-rate quality.

Description :

  • Type PFV Phase Failure Relay, popularly called Single phasing preventer. It operates almost instantaneously and protects the motor under any of the following conditions:
  • When there is disconnection of any one of the lines to the motor.
  • When the motor connections are reversed in phase.
  • When supply voltage is unbalanced


Construction :

  • The electronic circuit is of the most modern design and high grade components are used to ensure efficient performance.
  • It is designed to be used for motors of any HP.
  • LED is provided on the relay which will be off in case of Single Phasing or Phase reversal of input terminals of the motor
  • It is normally supplied in a moulded dustproof enclosure
  • Relay can be supplied with time delay and under / over voltage cut-off if required.


Tests :

  • When there is disconnection of any one of the lines to the motor
  • When the motor connections are reversed in phase
  • When supply voltage is unbalanced



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