Three Phase Voltage Relay – U3

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:

  • Two independent output relays.
  • Includes protection against neutral loss.

 

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

Protection functions:

  • Overvoltage
  • Undervoltage
  • Phase imbalance or phase loss
  • Phase sequence

Model U3N includes:

  • Loss of neutral

Specifications