What are the components of a circuit breaker?

[JuneDella]

A circuit breaker mainly consists of a cam, contacts, a capacitor, an ignition advance device, etc. The cam controls the opening and closing of the contacts during rotation, thereby switching the primary current on and off, ensuring the normal operation of the vehicle's electrical circuit and preventing it from burning out in a short-circuit state. A relay is an electrical control device in a vehicle. When the variation in the electrical input of the vehicle meets the specified requirements of the relay, a predetermined change can occur in the output circuit of the vehicle's electrical system. Automotive relays have both control and controlled systems and are commonly found in automated control circuits of vehicles. The use of relays allows for better vehicle control and more convenient handling of electrical circuit phenomena and other issues. The minimum current required to activate a relay is called the pull-in current. During normal operation, the applied current must be slightly higher than the pull-in current to ensure stable relay performance. The working voltage applied to the coil should generally not exceed 1.5 times the rated working voltage; otherwise, excessive current may burn out the coil.