ELECTRIC SWITCH PROVIDED WITH AN ARC-BLASTING UNIT

This electric switch comprises an arc-blasting unit with a compression cylinder (25) enclosing a compression chamber (27) mobile together with the mobile contacts (2), and a stationary piston (13) atan end of the compression chamber, provided with a support rod made up as a blowpipe (9) which channels the gas compressed in the chamber when the contacts separate to a nozzle (10) that directs the flow to a separation place (12) of the contacts so as to efficiently blast electric arcs. The arrangement is lightweight and occupies little space. 本电气开关包括吹弧单元，该吹弧单元具有：包围压缩腔室(27)的压缩气缸(25)，该压缩腔室(27)与移动触头(2)一起移动；和在压缩腔室的端部处的固定活塞(13)，该固定活塞设置有制成为吹管(9)的支撑杆，当触头分离到喷嘴(10)时，吹管导引腔室中压缩的气体，喷嘴将气流引导到触头的分离的地方(12)，从而有效地吹灭电弧。该布置重量轻，并且占用较小空间。