Motor control relays perform specific protective functions for motors or motor components to ensure proper and more efficient operation. Phase monitoring relays can detect faults in a 3-phase system; alternating relays balance load usage; pump seal failure relays monitor submersible pump shaft seals.
Phase monitor relays provide protection against premature equipment failure caused by voltage faults on 3-phase systems. ProSense® phase monitor relays are compatible with typical Wye or Delta systems.
Alternating relays are used in special applications where the optimization of load usage is required by equalizing the run time of two loads.
PSFR relays are designed to monitor the shaft seals of submersible pumps. The relay output can be used to give an alarm indication of a leaking seal. The relay will automatically reset when the fault condition clears.