Voltage Relays
Fanox’ range of Voltage relays come with many functions, for example with direct adjustment potentiometer, which eliminates the calculation of percentage facilitating installation and commissioning.
The U3 S and U3 N is the best solution to protects three-phase installations against voltage variations between phases, incorrect
Three Phase Voltage Relay – U3
Voltage control relays.
- 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 model:
- U3S-420 model is valid for 400 and 440 nominal voltage.
U3N model:
| Modelos | Código | Dimensiones | Tensión Nominal | Rango (V) |
| U3S-230 | 12071 | 22,5 mm | 3x230Vca | 185 – 290 |
| U3S-420 | 12070 | 22,5 mm | 3×400-440Vca | 350 – 500 |
| U3N-230 | 12056 | 78 mm | 3x230Vca | 200 – 260 |
| U3N-400 | 12055 | 78 mm | 3x400Vca | 340 – 460 |
| U3N-440 | 12057 | 78 mm | 3x440Vca | 380 – 500 |
- Two independent output relays.
- Includes protection against neutral loss.
Protection functions:
- Overvoltage
- Undervoltage
- Phase imbalance or phase loss
- Phase sequence
Model U3N includes:
- Loss of neutral
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