| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit breaker unit which can suppress temperature rise in the unit and can obtain excellent circuit breaking characteristics. SOLUTION: The circuit breaker unit 1 includes level difference portions 4, 4 respectively at both end parts of the unit 3, and a plurality of power supply side terminal parts 5a, 5a, 5a are installed on the front side of a first terminal board part 31a between one end of the unit 3 and one of the level difference portion 4, and a plurality of load side terminal parts 5b, 5b, 5b are installed on the front side of a second terminal board part 31b between the other end of the unit 3 and the other level difference part 4, and a plurality of insulating walls (partition walls 6a, 6b, side walls 6c, 6d) are installed protruded toward the front from the terminal board parts 31a, 31b. Then, each of the power supply side terminal parts 5a and the load side terminal parts 5b has respectively a connector 7, and the extended parts 71a, 71b of each connectors 7 are installed in a space surrounded by the level difference parts 4, 4 and the two insulating walls. COPYRIGHT: (C)2009,JPO&INPIT
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