OK , you can see I am not a photographer . Nor am I an electrician but I'll tell you everything I know about this : It's a used 50 amp 240 volt Square D type circuit breaker rated to 10kA suitable for copper or aluminum wire #8 - #2 AWG . This information is all visible on this breaker . I also have some other types of breakers ( single & double ) available if you want to upgrade or expand your panel.