| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit breaker which ensures safety of an operator with a simple structure and configuration, and can select either turning on of current to a circuit or interruption of current of the circuit, in a situation when a body inside is in an inaccessible state. SOLUTION: A power supply device includes a removable case holding parts of the power supply device, and the circuit breaker having an operation switch protruded from an aperture formed on the case and switching between either the conductive state where current flows or the current shutoff state where current is shut off, by movement of the operation switch. The operation switch does not permit removal of the case in the conductive state, and permits removal of the case only in the current shutoff state. COPYRIGHT: (C)2011,JPO&INPIT
|
