It should make a 'ratcheting' noise when the clutch disengages. I try to minimize the amount of 'ratcheting' it makes. If the clutch isn't disengaging, the motor load will rise when the slide comes to a physical stop then blows the fuse. The same thing happens with you run the stabilizers (or landing gear in 5th wheel) all the way to the stop...the fuse blows.
As mentioned early by turbo, replacing the fuse with a auto-resetting circuit breaker will work. I'd be concerned though if the slide drive clutch isn't disengaging.
Nights camped in 2013 - 55, 2014 - 105, 2015 - 63