EMS-HW50C Hardwired EMS-HW50C Surge & Electrical Protector

Never heard of that happening. It does have a bypass switch so you can force it to allow power through even if it detects an issue and shuts down.

I have one and the three things I don't like about it is the fact that the readout was off quite a bit and I had to calibrate it (should be done at the factory) and if you install it yourself, they can deny warranty coverage.
Then there's the display that's right out of 1972.

If I had it to do over, I would take a closer look at the Surge Guard unit and then decide.