PUFFER-TYPE CIRCUIT INTERRUPTER COMPRISING ARC- QUENCHING FLUID PRESSURE BOOSTING CHAMBER

摘要

A circuit interrupter comprises a pair of contacts which can be moved relative to each other to be separated in an arc extinguishing fluid; a pressure chamber which is connected to an arc space to contain the arc extinguishing fluid whose pressure is raised in the arc space; and a fluid passage which is closed until one contact has been moved a specific distance and is opened to discharge the fluid in the pressure chamber through the arc space out of the pressure chamber after separating the contacts by the specific distance whereby arc extinction is performed by the puffing of the fluid.