"120VAC / 1.5 amp, variable speed". The variator is incorporated in the trigger, like a lot of electrical tools (drills and such). In the best case scenario, only the variator is burned, and - from what I see - it might be replaced with one from a generic/cheap drill. Or you could search for the specific part - something like this (just a sample, search for a better fit).

In the worst case scenario, the motor is burned. When this happens, it leave a strong disgusting smell, so you'd probably know already.