Square D HOM230GFI thermal magnetic; 2 pole; 120/240 vac at 60 hz; 30 ampere; interrupting rating 10000 ampere; 6 milliampere trip sensitivity; wire size 14 to 8 awg, (2) 14 to 10 awg (copper); 14 to 8 awg (aluminum); plug on mounting; size 2.98 inch d x 3.13 inch h