Air Circuit Breaker Parts And Function

Unlike a fuse which operates once and then must be replaced a circuit breaker can be reset either manually or automatically to resume.

Air circuit breaker parts and function.

The working of air circuit breakers is similar to miniature circuit breakers. There are several types of air circuit breakers and switching gears available in the market today that is durable high performing easy to install and maintain. And their subdivision is also discussed along with advantages and disadvantages. It operates in air where air blast as an arc quenching medium at atmospheric pressure to protect the connected electric circuits.

They are typically used for low voltage energy distribution under 450v but can be used for medium voltage distribution as well 1000v and up. 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. When the current is greater than 100a these gases get dissociated into atoms which changes the characteristics of the arc on account of the associated change in its thermal conductivity. The arc in the air circuit breaker runs in a mixture of nitrogen oxygen and copper vapour.

Air circuit breakers are most commonly used in commercial and industrial applications and provide overcurrent protection for 800 1000a circuits. Air circuit breaker is a circuit breaker for the purpose of protecting low voltage circuit mainly for energizing and cutting off high current. What are air circuit breakers. 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.

In this article the different types of circuit breakers i e. Air circuit breaker is a switchgear device used to provide overcurrent and short circuit protection for circuits ranging from 800 amps to. 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.