Air Circuit Breaker Parts And Function

And their subdivision is also discussed along with advantages and disadvantages.

Air circuit breaker parts and function.

Air circuit breaker is a switchgear device used to provide overcurrent and short circuit protection for circuits ranging from 800 amps to. 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 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.

In this article the different types of circuit breakers i e. The working of air circuit breakers is similar to miniature circuit breakers. A circuit breaker in which the contacts open and close in the air at atmospheric pressure is defined as an air circuit breaker. 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.

What are air circuit breakers. It is used as the master of a factory and building and as a main circuit breaker of a ship and it is possible to attach various accessories according to the purpose. It operates in air where air blast as an arc quenching medium at atmospheric pressure to protect the connected electric circuits. 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.

The arc in the air circuit breaker runs in a mixture of nitrogen oxygen and copper vapour. They are typically used for low voltage energy distribution under 450v but can be used for medium voltage distribution as well 1000v and up. 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.