ATC Diversified SLJ Series has a built-in Delay-on-Make time delay. The SLJ continuously monitors the three phase lines for adverse conditions such as Phase Loss (single phasing), Under Voltage (brown outs), and Phase Reversal (improper sequence). When any of these conditions occur, the internal relay will de-energize (Drop-Out). When the fault is corrected, the field adjustable Delay-on Make delay begins. Upon completion of the time delay, the internal relay will energize (Pick-Up). Any subsequent interruptions will reset the delay period. The SLJ is ideally suited for multiple equipment installations to stagger start equipment after a fault condition