Unique microcontroller-based voltage and phase-sensing circuit constantly monitors the 3-phase voltage to detect harmful power line conditions such as single-phasing, low voltage, phase reversal, voltage unbalance, and high voltage (optional). When a harmful condition is detected, the MotorSaver's output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

• Protects 3-Phase Motors From:
  • Loss of any phase (single-phasing)
  • Low voltage
  • Voltage unbalance
  • Phase reversal
• Other standard features
  • Three input voltage ranges provide the versatility to handle global applications.
  • Bi-color LED Indicator light is green in normal conditions and red during trip conditions.
  • The microcontroller-based circuit provides better accuracy and higher reliability than analog designs.
  • Transient protection meets IEC 1000-4-5:1995 standards to handle tough conditions.
  • Single-phase conditions are detected regardless of regenerated voltages.
  • Diagnostic LED indicates: Run, Restart delay, Reverse phase, Unbalance/single-phase, High/low voltage
  • Standard surface mount
  • UL and cUL listed
  • 5-year warranty
  • Made in the USA