SELF-EXTINGUISHING EXPANSION SWITCH OR CIRCUIT BREAKER

摘要

14 SELF-EXTINGUISHING EXPANSION SWITCH OR CIRCUIT BREAKER A self-extinguishing expansion switch or circuit breaker, comprising an extinguishing chamber (5) and an expansion chamber (3) connected by a duct (29, 28). The extinguishing chamber (5) is positioned above the expansion chamber (3). The axially movable tube (9) which supports the movable arcing contact (13) separates axially from the conducting tube (20) supported by the operating rod (21) after a sufficient withdrawal (d) for the arc to have been able to be extinguished. Figure 1.