摘要 |
<p>A magnetic switch having a main motor switch for supplying power from a battery (30) to a starter motor (5) and an auxiliary relay (2) for operating the motor switch is mounted on the starter motor. The main motor switch includes copper contacts (3, 400b, 14b) switching a large amount of starter current, and the auxiliary relay (2) includes contacts (21A, 21B, 22) switching only a small amount of current sufficient to operate the main motor switch. The auxiliary relay (2) is separated from the main motor switch by a wall (270) to protect the auxiliary relay, especially its contacts from copper dusts generated in switching operation of main motor switch. Since the auxiliary relay (2) is kept free from the copper dusts, the magnetic switch properly functions for a long time. <IMAGE></p> |