ENTES-GKRC-20F-voltage-monitoring-relay-ENTES-GKRC-20F-P-Voltage-monitoring-relay-for-the-protection-of-one-phase-&-three-phase-networks-against-power-fluctuations-&-incorrect-phase-sequence-Faulty-alarm-responses-due-to-voltage-spikes-are-prevented-by-a-switching-delay-0-1-to-10s-The-relay-switches-immediately-if-the-voltage-of-a-phase-exceeds-or-falls-below-the-nominal-voltage-by-more-than-50-P-Entes-GKRC-20F-Voltage-Monitoring-Relay-SPDT-CO-8A