I had one of these for a few months and then it stopped working. I'll be generous and assume it detected a surge and cut the power to protect my equipment. Which is great.
Unfortunately, there's no reset switch on this model. The fuse in the plug is fine, but there's no way to get at the fuse inside the unit because it's fitted with anti-tamper screws that can be tightened but not removed. So the whole thing has to be replaced.
Naturally, I'm happy that it did the job of safeguarding my equipment. But next time, I'll look for a model that can be reset after a power surge.