Air Circuit Breaker (ACB) is an electrical protection device used to provide overcurrent and short-circuit protection for electric circuits with current ratings between 800 Amps and 10,000 Amps. ACBs are typically employed in low voltage applications below 450V and can be found in distribution panels.

The working principle of an ACB involves using air as an arc quenching medium. When a fault occurs, the breaker contacts separate, creating an arc. In some ACB designs, such as air blast circuit breakers, pressurized air is used to move and extinguish the arc. The pressurized air moves through an arc chute, guiding the arc upwards where it elongates and is eventually extinguished.

Air Circuit Breakers are commonly used in medium-to-high voltage situations and are an essential component in maintaining the safety and reliability of electrical systems.

Changan Electric can provide you with air circuit breakers with a current up to 6300A. Welcome to consult for more product information.