The answer to 'types of circuit breaker' is that there are several common types of circuit breakers used in homes and buildings. The most common are thermal-magnetic, electronic, and ground fault circuit interrupter (GFCI) circuit breakers.
Thermal-magnetic circuit breakers use a bimetallic strip that heats up and trips the breaker when too much current flows through it. Electronic circuit breakers use sensors to monitor the electrical current and trip the breaker when overloads or short circuits are detected. GFCI circuit breakers are designed to quickly shut off power when they detect a ground fault, which helps prevent electric shock injuries.