| 摘要 |
PROBLEM TO BE SOLVED: To suppress the deterioration of insulation performance at an electric cut part after operation in a circuit switching unit.SOLUTION: A circuit switching unit (10) comprises: a harness (12) connected to an electric circuit; and a gas generator (35) having a housing part (37) for housing a gas generating agent (41) formed by mixing fuel and main oxidizer, and for jetting a burning gas by burning the gas generating agent (41) so as to switch a connection state of the electric circuit due to the harness (12) by a pressure of the burning gass of the gas generating agent (41). When the fuel of the gas generating agent (41) burns, an auxiliary oxidant (40) is provided on the circuit switching unit (10) so that the oxygen supplying quantity supplied to the fuel becomes greater than the oxygen quantity required for complete combustion of the fuel. |
