The relay is suitable up to four shots. It consists of four cards viz.front fascia, power supply status input & output card and Micro controller card are housed in a compact 3N Non draw-out case. 

Micro controller does the sequence control and timing function. The DIP Switches on the relay front fascia select different operating functions and time setting.There is a watchdog timer in the relay which continuously monitors the program, put off ^POWER ON^ LED indication if the watch dog timer elapses.

To start an auto re close cycle, the initiating contact from the protective relay must be closed without chatter for at least 12 milliseconds.

Inputs:
Two optically isolated inputs are provided. One is used to take the three phase protection operated contact inputs to initiate the auto rec lose relay.

The another input is used to block the re close functions if the external blocking input is initiated.