Let Start from AC breaker
AC breaker is designed for AC Electrical Components wish is commonly used and Know As Alternatives current ,it is designed to protect Alternative current from Over Current , Short circuit and other component ,AC breaker are usually use for industrial work , commercial, and residential.
DC break/
DC Breaker are those breaker that are known as Direct Current ! It is commonly designed to protect DC electrical components just like Over heating that could result to melting, Controlling of DC Excessive Current and Short circuit / DC are common use in DC power system such like Solar Renewable Energy and electric motor systems 'we dont joke with this breaker In any of our installation,it is very essential to use