The stated maximum load is 3500 watts - for products of this type anyway excessively high - but the plug are already at far lower benefits on the mind.
For me he was a Ballast for a power strip in use - estimated load 500 Watt, with spikes up. 800 watts - and was broken after just 3 days:
the switching contacts were caked and the plug could no longer current unlock.
In general, the plug is recommended, but estimated only to loads of useful 300-400 watts.