Stab-lok breakers are fully interchangeable with all past breakers and deliver the same proven quality. The unique Stab-lok breaker design of only a 1/2 thick per pole, allows for the reduction of the size and weight of the loadcentre. This breaker will work only in Federal Pioneer Stab-lok branded residential panels. Typical applications for a single pole 15 Amp breaker include lighting and receptacle circuits in a home and requiring a wire size of 14-2.