148598 REUVM

Undervoltage relays, Un x 0, 85, 230/400 VAC, 1W

Undervoltage relays, when a connection to the three phases and the neutral conductor is established, the relay picks up if everything is OK and the green power LED lights up, if the rated voltage (UN) being monitored is lower than switching voltage US in one, two, or all three phases, the relay will fall back to its rest position, visual indicator: Power…green LED, faults in phases L1, L2, L3 red LED flashes, neutral conductor N is missing…green power LED flashes, single-phase application: L1-L2-L3 linking