Phase Loss Monitor

Phase Loss Monitor Features:

We offer 100, 200, and 400 Amps AC Contactors.

• The universal range from 190-480VAC, 50/60 Hz provides the versatility needed to handle global applications.
• Four adjustment pots provide versatility for a variety of applications.
• Diagnostic LEDs indicatetrip status and provide simple troubleshooting.
• Microcontroller-based circuitry provides better accuracy and higher reliability than analog designs.
• Single-phase conditions are detected regardless of regenerated voltages.
• Transient protection meets IEEE and IEC standards and permits operation under tough conditions.

Three-Phase Voltage Monitor.

Engineered Protection.

Microcontroller Based.

Additional Features:

  • UL and cUL listed.
  • CE compliant.
  • Finger-safe terminals.
  • Standard surface or DIN rail mountable.
  • Standard 1-500 sec. variable restart delay.
  • Standard 2-8% variable voltage unbalance.
  • Standard 1-30 sec. variable trip delay.
  • SOne 10 amp general purpose Form C relay.
  • Optional manual reset.

Protects 3-Phase. Systems from:

  • Loss of any phase
  • Low voltage
  • High voltage
  • Voltage unbalance
  • Phase reversal
  • Rapid cycling
  • Made in USA
  • Compact design.
  • 5-year warranty.
  • Protects 3-Phase. Systems from:


    The phase monitor is designed to protect 3-phase motors from damaging power conditions. The units’s wide operating range combined with UL and CE compliance enables quick access to domestic and global markets.

    A unique microcontroller-based voltage and phase-sensing circuit constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the unit'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.

    The phase monitor automatically senses whether it is connected to a 190-240V, 60Hz system, a 440-480V, 60Hz system, or a 380-416V, 50Hz system. An adjustment is provided to set the nominal line voltage from 190-240 or 380-480VAC. Other adjustments include a 1-30 second trip delay, 1-500 second restart delay, and 2-8% voltage unbalance trip point.

    Contact Factory for pricing and application requirements.

    Email us at inform@dcsunvolt.com Call 845 - 278 - 5777