He used the word "ingress", not idiots. I think that means some THING, not some person. Air, water, sand, parts, or something that bears against the switch or a part between it and the something.
A relay or timer module (DIN rail mounted or otherwise) is what is needed. But the exact behavior should be carefully specified. So just how long should the power be applied? And what should happen if the switch remains pressed? What should reset the relay or timer? After how long of a rest interval?
If the switch could be activated a second time briefly after the power to the actuator is released, then it may still be possible to overheat it. So a minimum rest time may be needed between activations.
stick a drawing pin to to the switch ,that'll stop the buggers holding the button in for too long.