Don't trust the ratings on Clipsal, those are really optimistic about current ratings, they typically only will handle the rated current for a few switch cycles before cooking themselves. I have had to change a few that burnt out with only a 10A load ( kettle) over a period of around 6 months. Fine for lighting, where you have a 3A load max, but the 16A rating is just junk.
Failure mode is they either melt the contacts out of the plastic, or just weld themselves together entirely. Only bonus is you can remove it a lot easier than to do the same for a CBI unit, but the CBI at least will handle the 16A load for a while.
not good for a product that claims to comply to both SABS and AUS standards, I have had bad luck with the current Chinese made ones.