Internal Air Circuit Breaker Parts

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

Internal air circuit breaker parts.

The following fig shows the main and outer parts of the acb. The air circuit breakers are mostly of three types and are widely used for maintaining the indoor medium voltage and switch gears of the home. The arc in the air circuit breaker runs in a mixture of nitrogen oxygen and copper vapour. 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.

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. It operates in air where air blast as an arc quenching medium at atmospheric pressure to protect the connected electric circuits. Construction of air circuit breaker. Movable and static contacts for air circuit breaker internal main spare parts are to work with bus bar and static contact is to work with contact point system for breaking and making of the circuit.

Plain break type air break circuit breaker. The contact point is to be silver coated for electric power system. 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. The main points of contacts are made in the shape of two horns.