Sierra CB41230 Circuit Breaker, Push Button, Resettable, 20 Amp Sierra products are engineered to meet todays high horsepower engine demands and stand up in the harsh marine environment. All Sierra products meet or exceed the original equipment part it replaces. Sierra supplies many OEM engine manufacturers and boat builders hundreds of quality parts every day. Replacement for popular panel mounted breakers Mounts in 3/8" hole White button indicates DC service, Black button indicates AC service Resettable Amp Rating: 20