• 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.

Specifications :