<p>The Phase Monitoring Relay is designed to monitor single- or three-phase over- and undervoltage, neutral monitoring, and phase loss. It has a neutral connection and operates within a measuring range of (L-L) 320 ... 460 V AC and (L-N) 185 ... 265 V AC. The relay can be powered by a rated control supply voltage of (L-L) 320 ... 460 V AC or (L-N) 185 ... 265 V AC. Additionally, it features two normally open (NO) outputs.</p>