| 摘要 |
PROBLEM TO BE SOLVED: To provide a breaker that can prevent erroneous connection of a circuit breaker unit which dissatisfies the rating current of a power supply wire while suppressing increase of the manufacturing cost.SOLUTION: A breaker having circuit breaker units 2a to 2d for detecting overcurrent and breaking power supply to a power supply wire, and an electrical leakage detection unit 1 to which the circuit breaker units can be secured, and which drives the circuit breaker units when leak current is detected, thereby breaking power supply to the power supply wire further has a rating setting member 8 for disabling a circuit breaker dissatisfying the rating current of the power supply wire to be mounted to the electrical leakage detection unit by reversing and mounting the circuit breaker to the electrical leakage detection unit.SELECTED DRAWING: Figure 3 |
