I want to send the instant alert message while receiving monitoring the readings from the wireless current transmitter, please give some advice which is best to send the alert message quickly whenever there will disturbance in power as well as AC voltage.
Also any suggestion to create the solution for power auto cut whenever there will some problem.
Note: We are getting the mains power of 208v/60Hz of 3 phase which is further dividing into the circuit breaker of 30 Amps where I am trying to use this current sensor.
That device only measures Amps, not voltage. It also uses a XBee radio for communication.
You will need another XBee radio connected to your Photon to receive the Amp readings.
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You can start with NCD's sample code Here, which is linked from their product page.
The Photon w/ XBee will receive the Amp Reading at the user configured time interval and change detection.
However, measuring the Amps for 1 phase wont exactly indicate a "problem" with the 3 phase service.
Amps will only indicate a change in Demand.
NCD.io has a 3-phase Current and Voltage Monitoring Product, as well as the Relays required to open the circuit. You may have better luck on their Forum to nail down the hardware requirements for your project.