Cutler hammer circuit breaker, miniature standard twin type Cht, series: CHT2020CS, 120 vac, 20 a, 1 phase, common, thermal magnetic, fixed trip, 10 ka interrupt, 1 poles, sandalwood handle, on/off actuator, 14 - 8 AWG wire, plug on mounting, 60 - 75 deg c, 3-1/2 in overall length, 3/4 in overall width, 1 space, for load centers and residential. This product requires one 3/4-inch (19.1 mm) space, and has a rejection feature. It is to be used only with load centers marked for use with Cht breakers. It is convenient and works effectively. It is definitely a great quality product.