Title:
回路遮断器
Document Type and Number:
Japanese Patent JP5747806
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a circuit breaker of high breaking capacity, which is suitable for automatic assembling, while being a thermal electromagnetic overcurrent tripping device.SOLUTION: A circuit breaker is equipped with an opening/closing mechanism portion 51; an overcurrent tripping device 52; a movable contact 13 provided on a cross bar 12 rotating with the opening/closing mechanism portion 51; and a breaking portion stored in a base 3 and including an arc-extinguishing device 53 for cutting an arc; a middle base 2; the base 3; and a cover 1 for covering each component stored in the middle base 2. On the middle base 2, a first hole 2d is provided so as to oppose to the breaking portion on a surface orthogonal to an insertion direction of the middle base 2 into the base 1. The first hole 2d is pasted by a yoke 7 of the overcurrent tripping device 52. In the circuit breaker, the cover 1 has a projecting portion for locking the overcurrent tripping device of a pole on which the opening/closing mechanism portion 51 is not placed, and an insulation member 54 is arranged between the opening/closing mechanism portion 51 and the overcurrent tripping device 52.
Inventors:
Akira Ishikawa
Masahiro Fushimi
Miyoshi Shinro
Yuta Kohi
Masahiro Fushimi
Miyoshi Shinro
Yuta Kohi
Application Number:
JP2011273534A
Publication Date:
July 15, 2015
Filing Date:
December 14, 2011
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H01H73/06
Domestic Patent References:
| JP2011134570A | ||||
| JP5054783A |
Attorney, Agent or Firm:
Tadahiko Inaba
Kanako Murakami
Shigeaki Matsui
Kuratani Yasutaka
Kanako Murakami
Shigeaki Matsui
Kuratani Yasutaka
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