Fanox. Protection and Control

U3S:

• Protects three-phase installations against voltage variations between phases, incorrect sequence of phases and phase loss
• Minimum and maximum thresholds adjustable (two potentiometers)
• Tripping time delay adjustable (one potentiometer)
• Model U3S-420 is valid for 400 and 440 nominal V

U3P:

• Suitable to protect three-phase installations against variations in main voltage. Sensitive to incorrect phase sequence. Applicable in generators
• Maximum and minimum thresholds can be adjusted separately
• Two independent output relays
• Reset time delay adjustable
  

U3N:

• Suitable to protect three-phase with neutral installations against variations in main voltage and loss of neutral. Sensitive to incorrect phase sequence. Applicable in generators
• Maximum and minimum thresholds can be adjusted separately
• Two independent output relays
• Reset time delay adjustable
• Monitors neutral