Well the topic as to ‘what degree of surge protection’ is always debatable (though, not the primary topic of this thread), and quite naturally different vendors will provide various strategies or levels of ‘protection’ though I don’t see surge protection as the primary function of the autoformer. But to clarify, here’s what the user guide says:
(Also note that the previous Hughes model did not provide this feature)
“Surge and Spike Protection
The autoformer is designed to boost voltage. However, there is a built-in mechanism that will protect your coach from various spikes and surges. In certain instances, a surge or spike might actually damage your autoformer while it’s protecting your RV. In this case, your autoformer will likely need to be returned for repair”...
It goes on to say, “Your unit may have absorbed an electrical surge or spike. The autoformer is designed to absorb the damage while saving other appliances. If this occurs, return it to us for service”...
Either way, Per my aforementioned, admittedly unorthodox objective and use of the autoformer, it seems to be working out like a charm!
3 tons