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Macromatic PJPU-FA8X 190-500V Multi-Detection Phase Monitor Relay

Macromatic PJPU-FA8X 3 Phase Monitor Relay
Macromatic PJPU-FA8X 190-500V Multi-Detection Phase Monitor Relay

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Our Price: $107.87
MFG: Macromatic
Weight (lbs): 0.3

Delivery Time: 5-10 Business Days
Product Code: PJPU-FA8X


The Macromatic PJPU-FA8X is a three phase monitor relay. This 8 Pin plug-in relay has a line-line voltage of 190-500V. It checks for 4 different types of phase errors and has an output of 5A SPDT/SPNO. The LED indicator changes color and sequence depending on the type of error found, shown by the diagram on top of the unit. The PJPU-FA8X uses an 8 Pin 70169-D octal socket. A socket that is rated for 600V should always be used if the system voltage is above 300V. Note: Image is for reference, actual part may differ.

Monitors For:

  • Phase Loss
  • Phase Reversal
  • Phase Unbalance (LED indication, does not de-energize)
  • Undervoltage


  • Relay Function- 3 Phase Multi-Detection
  • Line-Line Voltage- 190-500V AC
  • Output- 5A SPDT/SPNO
  • Phase Loss- Trips on Phase A, B or C loss
  • Phase Reversal- Trips if rotation is something other than A-B-C
  • Phase Unbalance- Fixed at 6% unbalance, LED indication
  • Undervoltage- Fixed at 90% of line voltage. Trips when the average of all 3 lines is less than the set point for longer than the 4 sec trip delay
  • Operating Temperature- -28 C to 65 C (-18 F to 149 F)
  • Storage Temperature- -40 C to 85 C (-40 F to 185 F)
  • Output Contacts- 5A @ 277V AC / 5A @ 30V DC; 1HP @ 250V AC, 1/2HP @ 125V AC; C300 Pilot Duty
  • Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
  • Response Time- Restart: 2 seconds
    Phase Loss & Reversal: 100ms
    Undervoltage: 4 sec
  • Power Consumption- < 40VA
  • Dimensions- 2.4" Height x 1.7" Width x 3" Depth
  • Approvals- UL and CUL Recognized, CE, UL & CUL Listed (with Socket)

Macromatic PJPU-FA8X Relay Installation Manual

Macromatic Universal Voltage 3 Phase Monitor Relay PJPU-FA8X

Additional Product Information

This relay uses microprocessor based design along with true RMS measurement to monitor for phase loss, phase reversal, and undervoltage. True RMS measurement offers more precise monitoring. The universal voltage range makes it useful in a number of applications. This unit can also still function even if a phase is lost, while indicating a fault and monitoring voltage. When the voltage and phase sequence is normal, the relay energizes after a restart delay. If a fault is detected, the relay is de-energized after a trip delay. It restarts automatically once the problem is fixed. It does not trip on phase unbalance, but will provide LED indication. The undervoltage setting, trip delay and restart delay are all fixed. The adjustment knob has two ranges for a 190-250V range & a 350-500V range. The PJPU-FA8X will detect the voltage when introduced and choose the correct range. The extra SPNO contact offers an isolated output for alarm circuits.

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