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This article is presented by:
Shah Rishabh G

AIR BREAK CIRCUIT BREAKER

Introduction
These type of breakers employ ‘air blast’ as the quenching medium.
The contacts are opened by air blast produced by the opening of blast valve.
The air blast cools the arc and sweeps away the arcing products to the atmosphere.
This rapidly increases the dielectric strength of the medium between contacts and prevents from re-establishing the arc.
So the arc is extinguished and the flow of current is interrupted.
Types of Air blast circuit breaker
(1). Axial-blast type (2).Cross-blast type (3).Radial-blast type


Types of Air blast circuit breaker
Axial-blast type:-

In which the air-blast is
directed along the arc path as




In which the air-blast is
directed at right angles to the
arc path as shown in Fig.