Northwood did tell me that this little device, the resettable breaker/fuse, did stop the slide on the out and inward movements. If the information presented in some of the earlier posts here saying that this fuse should not be the main "stopper" of the slide movement, then where is the breaker/switch that is supposed to do this? Northwood gave me no indication of a switch being located at any other place.
I now always try and stop the slide just prior to its' maximum movement either in or out just to prevent the fuse from having to stop it. Sounds like there should be a better "mousetrap" for this operation.