Schneider Electric Phase, Voltage Monitoring Relay with DPDT Contacts, 3 Phase, 304 → 576 V ac. 0.1-30 sec

Voltage relay is a device widely used in industry but also used fairly and in civilian use. Has a voltage range 304-576 V, 0.1-30 sec. Used to maintain voltage within permissible norms by providing welfare and longevity of your equipment.