Title:
CIRCUIT BREAKER
Document Type and Number:
Japanese Patent JPS6226735
Kind Code:
A
Abstract:
A molded case circuit breaker includes a movable contact having a base portion with an arcuate cam surface for engaging an outwardly projecting cam surface of a leaf spring, disposed around an enlarged portion of a rotatable cross-bar of an operating mechanism. The leaf spring is adapted to bias the base portion to enable the upper electrical contact to move with the cross-bar. Upon a high level short circuit the upper contact rotates and the arcuate cam surface is moved against the stationary cam surface of the leaf spring. The arcuate cam surface of the leaf spring and the arcuate cam surface of the base portion are adapted to decrease bias as the upper contact rotates to its BLOWN-OPEN position. A detent is on the arcuate cam surface.
Inventors:
CHIYAARUZU RICHIYAADO PATON
CHIYAARUZU ERUSUWAASU HOOGU
CHIYAARUZU ERUSUWAASU HOOGU
Application Number:
JP17073586A
Publication Date:
February 04, 1987
Filing Date:
July 17, 1986
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORP
International Classes:
H01H73/38; H01H73/02; H01H73/36; H01H77/10; (IPC1-7): H01H73/36
Domestic Patent References:
| JPS594535U | 1984-01-12 | |||
| JPS58120547U | 1983-08-17 |
Attorney, Agent or Firm:
Koichiro Kato