AIR BREAK SWTICH

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  The switch whose contacts open in the air and quenching of an arc achieves by compressed air, such type of switch is called an air break switch.The air acts as a dielectric medium for the air-break switch. It is more effective and reliable as compared to another switch.The air break switch is operated manually when their handle is placed on a ground level. 

Air break switches are of several designs. Some switches operate from the ground by a holder on the end of an insulated stick; some others are through a system of linkages and opens by a crank at the foot of the pole.

When more than one conductor open, there may be several switches arrange on the same pole. They may be opened singly or all together in a group. Some switches are mounted so that the blade opens downwards and these may be provided with latches to keep the knife blades from jarring open.