Please note - both the GV7 and LR9F ranges are no longer available, this FAQ is for reference only
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.
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.