| 摘要 |
<p>The circuit breaker (1) has a cylindrical cam (40) for performing opening/closing sequence of a gas type switch (10), a sulfur hexafluoride type interruption switch (20) and a disconnecting switch (30). The cam has a wall in which recesses (42-1-42-3) are defined. The drive element controls one of contacts of the switches. The switches (10, 20, 30) have fixed contacts (12, 22, 32) and mobile contacts (14, 24, 34) respectively, manipulated by a single command connected to poles of the circuit breaker. Each mobile contact is actuated by using a synchronization and actuation device using the cam.</p> |
