Title:
CIRCUIT BREAKER
Document Type and Number:
Japanese Patent JP3721266
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a circuit breaker having a stable cut-off performance, excellent workability during assembling, and high safety.
SOLUTION: A plural-electrode circuit breaker is constituted by forming units 90 at each electrode by integrating a main circuit 100 extending from a power supply side terminal 1a to a load side terminal 7c with a portion including a trip mechanism 50, and combining unit 90 s of a required numbers of electrodes. A portion for generating a mechanical output for tripping the trip mechanism 50 is installed with a installing portion of a storing means in a condition that it is electrically insulated from both a coil 52 and the main circuit 100. An angle between a load side fixing contact 6 and a load side movable contact 5 and an angle between a power supply side fixing contact 2 and a power supply side movable contact 3 are set so that one of them is larger than the other, and the main circuit 100 is constituted so that during its closing a wipe amount between the power supply side fixing contact 2 and the power supply side movable contact 3 is different from a wipe amount between the load side movable contact 5 and the load side fixing contact 6.
Inventors:
Yukihide Yamada
Toshihiro Sekiguchi
Kazuya Aihara
Eetsu Sato
Toshihiro Sekiguchi
Kazuya Aihara
Eetsu Sato
Application Number:
JP22009498A
Publication Date:
November 30, 2005
Filing Date:
August 04, 1998
Export Citation:
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd.
International Classes:
H01H73/38; H01H1/18; H01H73/04; H01H83/02; H01H9/02; H01H9/34; H01H71/02; H01H71/24; H01H77/10; (IPC1-7): H01H73/38
Domestic Patent References:
| JP6028964A |
Attorney, Agent or Firm:
Yasuo Sakuta