How much voltage and current can an automotive relay withstand?

I'm looking at your general 12VDC 40A automotive relay. I've already checked data sheets on relays with these ratings and couldn't find anything. How much voltage and current can be switched if it's only being switched on for a time as short as milliseconds? (I'm using caps as the source... show more I'm looking at your general 12VDC 40A automotive relay. I've already checked data sheets on relays with these ratings and couldn't find anything.

How much voltage and current can be switched if it's only being switched on for a time as short as milliseconds? (I'm using caps as the source with 400V, 1410uf)

I don't want to buy one and end up welding contacts together or blowing it up...
And are automotive relays solid state?

Thx in adv.
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