| 摘要 |
PROBLEM TO BE SOLVED: To make it easy and sure to change between a 100 V connection and 200 V connection of a circuit breaker equipped in a distribution board. SOLUTION: A power source connection housing part 64 of the circuit breaker 11 houses a power source connection part 21 rotatably. The power source connection part 21 is provided with two switch knobs 66 each having a connection terminal 77. In a state of a terminal door being open, each switch knob 66 is rotated and connected with an available conductive bar N, L1, so that a changing between a 100 V connection and 200 V connection is made possible. In a state of the terminal door being closed, each switch knob 66 does not rotate and the connection terminal 77 can be fixed firm. On a top face 33 of a box 12, a display window 65 is provided. In accordance with a movement of the connection terminal 77, a display means 81 is rotated and the display means 81 shows a 200 V connection through the display window 65. COPYRIGHT: (C)2007,JPO&INPIT
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