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Do the GV7 and the LR9F trip on phase loss?

Yes they do, though their trip time for "unbalanced phases" is much faster than that of the conventional thermal magnetic overloads, such as GV2/3 series or LRD series.

The GV7 and LR9F series will both trip after 4 seconds (+ or - 20%) on phase loss where an LRD or GV2/3 can keep running for up to 2 hours unless an overload is detected in the remaining phases.

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