ATC Diversified Electronics SLA-575-ALE Phase Monitoring Relay, 525-625V, DPDT, 3A/600VAC, Screw Terminal, SLA Series.

ATC Diversified Electronics SLA-575-ALE is part of the SLA series family of voltage monitors. The SLA series is designed to protect 3 phase equipment against phase loss, under voltage, and phase reversal conditions. With normal operating voltages applied in the proper ABC sequence, the internal relay will energize or pick up. When an incorrect phase sequence or phase loss occurs, or the three phase voltages fall below the drop out voltages, the relay will de-energize or drop out.