Patent ID: 8487204

Claim:
Single-pole or multi-pole double break switching device for low voltage systems, said device comprising, for each pole, at least a first pair of contacts and at least a second pair of contacts, each pair comprising a stationary contact and a movable contact reciprocally couplable/decouplable at the level of a first breaking cavity and a second breaking cavity respectively; said device comprises at least a first casing inside which said breaking cavities are configured, wherein said first casing comprises a first surface with respect to which an internally hollow portion protrudes, said internally hollow portion comprising, for each pole, one or more exhaust channels each provided with a first section directly communicating with said first breaking cavity, each of said channels comprising a second section, opposite to said first section, communicating directly with the environment outside said first casing to permit the discharge of gas from the inside of said first breaking cavity; said internally hollow portion being integrally made with at least one portion of said first casing, said first breaking cavity being positioned between said second breaking cavity and said first surface; wherein the one or more exhaust channels extends integrally and continuously from the first section to the second section; wherein the device comprises a gas pathway from the origin of a gas within the device to the final exit of the device, the gas pathway being is an integral and continuously pathway; wherein said first casing comprises a rear part and front part connected in a removable manner to each other, said rear part being integrally made with said internally hollow portion.