Abstract: An electric arc breaker is formed as a unit in a capsule filled with pressure gas and comprising a movable contact arranged in a support having a shoe against which a blower base is fastened. The blower has at the end opposite to its base a fixed diffuser turned towards a base of a fixed contact, which is provided with a damping spring.

Abstract: A portable breakload tool which permits opening of electric devices under load so that the opening is made without apparent external arc. The tool includes an arch quenching chamber in which two fixed contacts and a rotatable contact are positioned. The movable contact is operated externally to cut current between the contacts. The electric arc is confined within the chamber and is quenched by the sulfur hexafluoride gas which fills the chamber.

Abstract: This invention deals with a new chamber meant to be used in insulating operation shafts or rods, with a view to disconnect electric switches, connect them again, or, besides, to act as contactors, so as to extinguish the electric are formed during the operation, specially in medium and high voltage overhead lines. In its general lines, the innovation consists in a chamber for breaking and/or re-connecting of section switches quencher of electric arc formed by an insulated body in the interior of which there is arranged an actuating movable contact in one or two fixed contacts, this movable contact being driven by a shaft provided in the chamber and tripped by a spring assembly provided in an appropriate mechanism, said chamber being closed and sealed, containing in its interior sulfur hexafluoride gas (SF6) under pressure.