CONTACT DEVICE FOR CIRCUIT BREAKER

Japanese Patent JP3442304

B2

PROBLEM TO BE SOLVED: To allow a fixed side contact to be dismounted and mounted only by shifting it so as to relatively move a contact shaft in the direction of its opening part along a U-shaped cut-out slot and thereby to simply replace a damaged contact of a circuit breaker by providing the fixed side contact with the U-shaped cut-out slot, and by mounting it by fitting the U-shaped cut-out slot to the contact shaft.
SOLUTION: A U-shaped cut-out slot 21a is formed in a fixed side contact 21 of a fixed side contact unit 20 of a contact device, and the fixed side contact 21 is mounted by fitting the U-shaped cut-out slot 21a to a contact shaft 9. When the fixed side contact 21 is replaced, all of the fixed side contact unit 20 is extracted, an arc runner 23 is dismounted by removing two mounting screws 22, and the fixed side contact 21 can simply be dismounted by catching a tool on a projection 21b of the fixed side contact 21 and drawing it out. Its mounting can simply be implemented by pressing a new fixed side contact 21 so as to fit its U-shaped cut-out slot 21a to the contact shaft 9.

JPS6463240	CIRCUIT BREAKER
JPS52132378	ELECTRODE FOR ATMOSPHERIC BREAKER
JPH06310017	CONTACT POINT SWITCH DEVICE

Masao Horikawa
Yoshihiro Umemoto

JP6035499A

September 02, 2003

March 08, 1999

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Terasaki Electric Industry Co., Ltd.

H01H9/38; H01H1/20; H01H31/02; (IPC1-7): H01H31/02; H01H1/20

JP9198974A
JP62163221A
JP4267020A
JP5671231A
JP1069846A
JP817322A
JP686415A
JP617076U
JP668275U

Soga Doteru (6 people outside)

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