Arc-extinguisher of switch.

摘要

An insulative tube (3) of a switch is molded with inserted tubular conductor (15) and a sliding contact (14) provided on outer surface of a piston (7) slides on inner surface of the tubular conductor (15); the insulative tube (3) is reinforced against the pressure of an insulation gas sealed in the insulative tube (3); the piston (7) and the tubular conductor (15) are electrically connected stably and undersirable tottering of moving contacts (8), (16) moutned on the piston (7) can be prevented.