Air Circuit Breaker Parts Name

An air circuit breaker is a circuit operation breaker that operates in the air as an arc extinguishing medium at a given atmospheric pressure.

Air circuit breaker parts name.

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. 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. It operates in air where air blast as an arc quenching medium at atmospheric pressure to protect the connected electric circuits. The arc in the air circuit breaker runs in a mixture of nitrogen oxygen and copper vapour.

Air circuit breaker has several advantages over the oil as an arc quenching medium. 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. Unlike a fuse which operates once and then must be replaced a circuit breaker can be reset either manually or automatically to resume. Air break circuit breaker in air break circuit breaker the arc is initiated and extinguish in substantially static air in which the arc moves.

Such breakers are used for low voltages generally up to 15kv and rupturing capacities of 500mva. What is air circuit breaker.