The Parallax ITEQ115 One-Pole Circuit Breaker requires a one 1" space. Specifications include HACR SWD Rated, 120/240VAC, and 10,000 AIC. Dimensions: 2.56" H x 1" W x 2.88" L.
One-pole circuit breaker HACR SWD Rated Size: 15 Amp Dimensions: 2.56" H x 1" W x 2.88" L