SWITCH CONSTRUCTION WITH LOAD BREAK DEVICE HAVING A MOVABLE SLAT, A GAS EXPANSION CHAMBER AND GAS MUFFLER

摘要

Switch construction for power distribution alternating current circuits having a switch blade for pivotal movement into and out of contacts enclosed by an insulating housing having a slot through which the switch blade is movable. A slat is biased transversely of the slot to close off the space between the switch blade and the contacts on opening of the circuit. A gas expansion chamber at the entrance to the slat is closed off by a pair of flexible insulating strips. A gas muffler is located at one end of the expansion chamber. The switch blade, in closed position, is spaced from the housing, the slat and the sealing strips by heat resisting spacers.