Micro Switch Amp Rating

I'm trying to determine the amp rating for this particular microswitch at 12 volts DC. Am I reading this correct? It's apparently rated at 0.5A @ 125 VDC and 0.25A @ 250 VDC. Is it then safe to assume then that the amp rating is linear in relation to voltage, thus rendering a 5.0A rating at 12.5V???

Sorry for the poor photo, but this was the best I could get.

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