Title:
断路器
Document Type and Number:
Japanese Patent JP5114305
Kind Code:
B2
Abstract:
The present invention relates to a blade-shaped circuit breaker, for moderating an electric field between a fixed side electrode and an electrode of a movable blade, capable of improving electroinsulating property and implementing miniaturization. The blade-shaped circuit breaker is provided with a pair of power transmission conductors (10, 10A) opposite with each other in a metal container (1). One power transmission conductor (10) is provided with a fixed side electrode (11) for fastening a contact piece (12) having an electrolinking surface (13), the other power transmission conductor (10A) is provided with a movable blade (15) rotatably. A grounding side electrode (16) connected and separated with the movable blade (15) is arranged around the fixed side electrode (11) in the metal container (1). The electrolinking surface (13) of the fixed side electrode (11) is formed asymmetrically, such that a curvature radius R1 of electrodes-between side of the electrolinking surface connected and separated with the movable blade (15) is larger than a curvature radius R2 of grounding side of the electrolinking surface opposite to the inner of the metal container (1). The problem is solved.
Inventors:
Yoshiaki Seya
Fujisawa Riki
Yoshiaki Inami
Fujisawa Riki
Yoshiaki Inami
Application Number:
JP2008156292A
Publication Date:
January 09, 2013
Filing Date:
June 16, 2008
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01H31/02; H01H1/06; H01H31/28; H02B13/02; H02B13/075
Domestic Patent References:
| JP2003189427A | ||||
| JP3133018A | ||||
| JP200463110A |
Attorney, Agent or Firm:
Yukihiko Takada
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