Eaton Corporation CH120GFCS Single Pole Ground Fault Circuit Breaker, 20A It is an Eaton Corporation Product It is a 20A Single Pole Ground Fault Circuit Breaker Type CH 3/4" Wide Per Pole. For Cutler-Hammer Type CH Load centers Clam Shell Pack. Eaton Cutler Hammer 1 Pole 20 amp Gfi gfci Breaker. CH120GF CH120GFCS