| 摘要 |
PROBLEM TO BE SOLVED: To provide a small switch for DC current cut-off capable of extinguishing an arc by stable ventilation.SOLUTION: A ventilation groove 1f is formed on the bottom of a case 1; a notch 1g is formed on a wall standing from the bottom. A space part 1h is formed between the case 1 and a housing 11. The ventilation groove 1f and the notch 1g are consecutively connected; the notch 1g and the space part 1h are consecutively connected. A first converter 4 and a second converter 5 are disposed through an elastic member 9. Energizing the elastic member 9 makes the second converter 5 act reversely to an act of the first converter 4 to send wind generated accompanying the act of the second converter 5 to the space part 1h through the ventilation groove 1f and the notch 1g. |
