Three-phase voltage Relay
- Self powered by the voltaje to be monitored.
- Visual indication on trip cause.
- DIN mounting.
- Protects three-phase installations against voltaje variations between phases, incorrect sequence of phases and phase loss.
- Adjustable mínimum and máximum thresholds.
- Adjustable trip time delay.
- U3S-420 model is valid for 400 and 440 nominal voltage.
- Two independent output relays.
- Includes protection against neutral loss.