| 摘要 |
A loadbreak switch which can repeatedly open and close a circuit to a load for 200 operations or more at a current of 300 amperes or more and at a voltage of 13,000 volts or more. The switch includes two conductors connected from two fixed terminals. An arm is pivoted from one terminal and has a contact at its free end to engage the other terminal. The contact is mounted on the end of a shaft slidable in the arm. A vacuum interrupter is mounted in the arm in a position to be actuated and deactuated by axial movement of the shaft relative to the arm. The interrupter breaks before the contact breaks and makes after the contact makes. Since the interrupter is normally actuated and deactuated axially, the switch is uncomplicated, inexpensive, requires few parts and is compact.
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