Cutler Hammer BR2030

CIRCUIT BREAKER, THERMAL MAGNETIC, DUPLEX; 1 POLE; 120 VAC; 20 AMPERE (OUTSIDE POLE), 30 AMPERE (CENTER POLE); INTERRUPTING RATING 10 KILOAMPERE; BOX LUG/CLAMP TERMINAL; WIRE SIZE 14 TO 4 AWG (ALUMINUM/COPPER); PLUG ON MOUNTING; SIZE 1 INCH W