Title:
CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2015/004697
Kind Code:
A1
Abstract:
In this invention, an electromagnetic tripping device that affects inverse-time characteristics is reduced in size, reducing the size of a circuit breaker. In this circuit breaker, which is provided with an opening/closing mechanism (30) that opens and closes contacts and an electromagnetic tripping device (40) that trips said opening/closing mechanism (30), said electromagnetic tripping device (40) is designed such that when an armature (49) is not being held in contact with an oil dashpot (43), a free end (50b) of an armature spring (50) is located at a first position on the yoke (42) side of a line (A) connecting the axis of rotation of the armature (49) to a fixed end (50a) of the armature spring (50), and when the armature (49) is being held in contact with the oil dashpot (43), the free end (50b) of the armature spring (50) is located at a second position on the opposite side of the aforementioned line (A) from the yoke (42).
Inventors:
MIYOSHI NOBUO (JP)
Application Number:
PCT/JP2013/004288
Publication Date:
January 15, 2015
Filing Date:
July 11, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01H73/36; H01H71/24
Foreign References:
| JPH04711U | 1992-01-07 | |||
| JP2002251949A | 2002-09-06 | |||
| JP2006302634A | 2006-11-02 |
Attorney, Agent or Firm:
TAKAHASHI, Shogo et al. (JP)
Shogo Takahashi (JP)
Shogo Takahashi (JP)
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