Circuit Breaker Parts And Function

They protect electrical equipment and system infrastructure by fulfilling critical operational and safety functions and carry nominal load currents.

Circuit breaker parts and function. Air circuit breaker sf6 circuit breaker vacuum circuit breaker and oil circuit breaker have been discussed in a short detailed just to understand the basic concept about these circuit breakers. Simple domestic circuit breakers are designed to prevent damage to home wiring. Air circuit breaker acb air circuit breaker acb is an electrical protection device used for short circuit and overcurrent protection up to 15kv with amperes rating of 800a to 10ka. Damage is usually caused by plugging too many high power devices like electric heaters appliances and high power lights in to a circuit.

Unlike a fuse which operates once and then must be replaced a circuit breaker can be reset either manually or automatically to resume. On lvpcbs auxiliary contacts are mounted on the frame of the breaker photo 8 at right. An mcb or miniature circuit breaker is an electromagnetic device that embodies complete enclosure in a molded insulating material. It operates in air where air blast as an arc quenching medium at atmospheric pressure to protect the connected electric circuits.

We built a web page that will help get you learn the basics on circuit breakers. What are circuit breakers and how do they work. Discover how circuit breakers function the main components of circuit breakers and how they differ from fuses. A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit its basic function is to interrupt current flow after a fault is detected.

And their subdivision is also discussed along with advantages and disadvantages. The main function of an mcb is to switch the circuit i e to open the circuit which has been connected to it automatically when the current passing through it mcb exceeds the value for which it is set. Auxiliary contacts control electrical functions within the circuit breaker such as turning the spring charging motor on and off at the appropriate times. What is miniature circuit breaker mcb.

Are circuit breakers new to you. In this article the different types of circuit breakers i e. When the circuit breaker senses the overload it trips interrupting the flow of electricity and preventing damage to home wiring. Circuit breakers are switching devices whose primary function is to isolate parts of an electrical distribution system in the even of abnormal conditions.