According to Jeff Wisnia :
You have probably fried the dimmer.

Yup, probably.

If he pulled enough current thru the dimmer to blow the breaker, the
dimmer triac almost definately blowed up. Triacs, being semiconductors,
are relatively fragile that way.
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.