A Glasair pilot landed gear up after the landing gear circuit breaker popped following multiple touch and go's. A communication distraction on downwind interfered with detection of the landing gear extending.

Narrative

I was practicing takeoffs and landings. I was using Runway 11L. I had made approximately 4 to 5 takeoffs and landings and was going to make one more before calling it a day. Before my next takeoff attempt a Cessna 172 took off. I waited and gave the Cessna 172 some time before I began my takeoff roll. As I lifted off; I noticed that the Cessna 172 was already downwind and I kept him in sight during crosswind. I turned downwind and at that point I lost him for a second or two; but then spotted him again. By then he was turning base and then a short final; but he was going very slow. The Tower asked if I would take Runway 11R instead of Runway 11L at the same time as I was lowering the landing gear; I then added 20 degrees of flaps. I started to turn base and added another 20 degrees of flaps. I then turned final and lined up with Runway 11R; slowed the plane down to approach speed. On the final I started to flare once I was over Runway 11R. As I began to flare I realized I was not feeling the gear making contact with the runway and then I realized that the gear was not down and it was too late to add power to gain altitude to lower the gear as I made contact with the runway. When the plane was later lifted to lower the gear I then noticed that the gear handle was down and the circuit breaker had popped out and that probably was the reason it had not deployed. I think that the gear being retracted and lowered may have heated up and caused the circuit to pop.