110V or 230V AC on operating elements are OK, as long as the entire circuit and enclosures are rated for it.
Same as the light switch in the wall switches the 120V or 230V AC directly.
That being said, it is becoming rarer since universally the preference is 24V DC.
About being zapped by 110V or 230V, then the person being zapped is himself to blame by assuming things. Any enclosure within which there is a dangerous voltage must be clearly labelled as such. And there must be a sign insde or outside clearly stating the control voltage used.
No such label or sign ? Well then investigate it before mindlessly touching live circuits !
Just saying...