CIRCUIT BREAKER - FUJI ELEC FA COMPONENTS & SYS

Title:

CIRCUIT BREAKER

Document Type and Number:

WIPO Patent Application WO/2011/024529

Kind Code:

A1

Abstract:

A circuit breaker is provided wherein even if a material property (thermal conductivity) of the stud varies, the number of structural changes of a case and the like can be minimized. A stud (20) comprises a base (21), which is housed in a case (2), and a protrusion (22), which protrudes from the case (2), and the cross-sectional area of the protrusion (22) is greater than that of the base (21). Setting the cross-sectional area of the protrusion (22) of the stud (20) to be greater than that of the base (21) thereof can increase the thermal conductivity of the protrusion (22), thereby increasing the thermal conductivity from the protrusion (22) to an external conductor connected thereto. Additionally, since the surface area of the protrusion (22) is increased, the amount of thermal radiation from the protrusion (22) is also increased. In this case, the dimensions of the base (21) inserted into a stud insertion hole (2b) of the case (2) do not vary, and hence the dimensions of the insertion hole (2b) of the case (2) need not be changed. Therefore, the structural changes of the components due to the variation in the material property of the stud can be minimized.

More Like This:

JP3540636	CIRCUIT BREAKER
JP5038472	Sliding Movable Contact Assembly for Circuit Breakers

Inventors:

NAKANO MASAAKI (JP)
TOYAMA KENTARO (JP)
OOSAWA MAKOTO (JP)

Application Number:

PCT/JP2010/059256

Publication Date:

March 03, 2011

Filing Date:

June 01, 2010

Export Citation:

Click for automatic bibliography generation Help

Assignee:

FUJI ELEC FA COMPONENTS & SYS (JP)
NAKANO MASAAKI (JP)
TOYAMA KENTARO (JP)
OOSAWA MAKOTO (JP)

International Classes:

H01H73/02; H01H71/08; H01H73/20

Foreign References:

JP2004127707A	2004-04-22
JPS3820348Y1	1963-10-02
JPS52142661U	1977-10-28
JPH0567424A	1993-03-19

Other References: