The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2006
Filed:
Dec. 22, 2005
Koji Asakawa, Saitama-ken, JP;
Mitsuhiro Mitsushige, Saitama-ken, JP;
Yasuhiro Takahashi, Ohtawara, JP;
Akifumi Sato, Saitama, JP;
Hisanobu Asano, Saitama-ken, JP;
Koji Asakawa, Saitama-ken, JP;
Mitsuhiro Mitsushige, Saitama-ken, JP;
Yasuhiro Takahashi, Ohtawara, JP;
Akifumi Sato, Saitama, JP;
Hisanobu Asano, Saitama-ken, JP;
Fuji Electric FA Components & Systems Co., Ltd., Tokyo, JP;
Abstract
A circuit breaker has a molded case with a main case, a middle cover and a top cover being dividable from one another. The main case contains contactor sections, each including a stationary contactor and a movable contactor for a pole corresponding to each phase in a polyphase circuit, an arc-extinguishing device, an overcurrent tripping device actuating a tripping mechanism by detecting an overcurrent, and a zero-phase current transformer detecting a leak current. The middle cover has a partitioned recess for containing a switching mechanism and the tripping mechanism. Interpole partitions, surrounding the contactor section and the arc-extinguishing device, and a screen-like intermediate partition, isolating the contactor sections from the overcurrent tripping device, are formed with the middle cover laid on the main case. A wall with gas outlets for an arc gas is provided on the back of the arc-extinguishing devices.