| 摘要 |
<p>PURPOSE:To improve contact consumption, lessen contact contacting force and satisfy a switching service life by making one side a PdRu contact and the other side a AgSnInxO2 contact so as to be opposed. CONSTITUTION:A PdRu contact 1 having 9 to 14% of Ru is firmly fixed to a movable spring 2 and a AgSnIn contact 3 is firmly fixed to a fixed spring so as to be opposed while having a contact interval of 0.25 to 0.55mm and contact contacting force not less than 50gr when the contact are closed. The AgSnIn contact 3 is mainly composed of SnO2 and InO2 while having an oxide 9 to 14%. Thereby, contact consumption can be improved and contact contacting force generating fusion to a rush current at the lamp-on time can be lessened while satisfying a required service life.</p> |
