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Are the phase unbalance and phase loss protection tied together in the C440 relay?

Phase loss and Phase Unbalance obey the exact same logical condition - If “phase unbalance” dip switch selector is OFF,  “Phase Loss” protection will be also at OFF as it is the exact same protection. However in the event of a phase loss condition the overload current rise that will be seen in the remaining phases will result in a trip based on 115% OL trip point based on FLA setting. 

 

C440 / XTOE Product Overview