In our electrical panel we have 2 AFCI breakers next to each other. One is for the master bedroom the other is for 2 guest bedrooms. Each of these breakers is warm to the touch. We have had no electrical problems in either room and it has never tripped. I just thought it was strange that these breakers would be warm while the others are not. Is it normal for a AFCI breaker to be warmer than a regular breaker?