| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit breaker capable of easily confirming the changing- over between a 100-V connection and 200-V connection of a branching breaker in a distribution board. SOLUTION: Two changeover knobs 66 fitted with terminal bodies 74 of selective type are installed in a power supply connection part 21 of this circuit breaker 11. When the upper knob 66 is turned upward and the terminal bodies 74 are connected with a conductive bar N as a neutral electrode, the 100-V condition is generated and a display window 65 appears white. When the upper knob 66 is turned downward and the terminal bodies 74 are connected with a conductive bar L1 at one of the voltage electrodes, the 200-V condition is generated and the display window 65 appears red. COPYRIGHT: (C)2003,JPO
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