The PMPU-FA Series Phase Monitor Relays utilize a microprocessor-based design to provide protection against phase loss, phase reversal, phase unbalance, undervoltage and overvoltage, and are compatible with most Wye or Delta systems. They protect against unbalanced voltages or single phasing regardless of any regenerative voltages.
The relay is energized when the phase sequence and all voltages are correct. Any one of five fault conditions will de-energize the relay. Re-energization is automatic upon correction of the fault condition. A multi-color LED indicates normal condition and also provides specific fault indication to simplify troubleshooting.
These products offer a universal voltage design that works on any three-phase system voltage from 208-480V (208 or 240V only on the 11 pin DPDT version). The undervoltage drop-out is fixed at 90% & the overvoltage drop-out is fixed at 110% of operating voltage. The time delay drop-out on undervoltage is fixed at 4 seconds. The percent phase unbalance is fixed at 6%. The time delay on both power up and restart after a fault has been cleared is fixed at 2 seconds.
One advantage of these products over the standard PMPU Series is the many options of output configurations offered. While the PMPU comes only with an 8 pin octal SPDT output, the PMP-FA Series offers configurations of 8 pin octal SPDT w/ an extra N.O. contact, 11 pin octal DPDT, and 12 pin square DPDT. Click here for more information the advantages & benefits of using an 8 pin plug-in phase monitor relay with more than just SPDT outputs. Another advantage of these products is the ease of setup & installation with most settings fixed vs. adjustable.


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Features |
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| Enclosure Style | Plug-in case utilizing industry-standard 8 & 11 pin octal or 12 pin square sockets |
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Configuration/ Contact Rating |
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| Approvals |
UL File #E109466
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