My freaking standing desk has protection if I go up and down too much within a certain period of time.
Like I said, I have zero trust this meter is accurate when it doesn't even have simple protective circuitry.
The desk controllers I have seen check for that limit (as one should).
Every controller should reject input that leads to destruction, especially if the input is wireless or comes over network.
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[0] - The shredder is of the cheaper kind, and shows zero indication of any computer on board, so I'm assuming overheating shutoff is charging up some capacitor that's grounded via a high-resistance path and discharges at a known rate.
I actually had a dangerous situation here once in a big compressor motor that had a faulty soft-start circuit, that caused the bi-metal contacts to fuse so the protection no longer worked. By the time I noticed the compressor motor was way too hot to touch.
Now, that could be explained by e.g. the engine itself having enough thermal capacity to keep the shutoff switch active for a while, except... if you are careful and do small pauses between shreddings, you can keep going indefinitely - and those pauses don't feel enough to let the engine cool if that was the only thing that mattered.
Like, you shred something for 3 minutes straight and get 30 minutes cutoff, vs. shredding something for 1 minute, then 30 seconds break, then 1 minute, then 30 seconds break, ... and you can keep going like that for hours.
Yes, and it excels at it. From your description it does look like it