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Title:
CIRCUIT BREAKER AND SAFETY DEVICE UNIT FOR CIRCUIT BREAKER
Document Type and Number:
Japanese Patent JP2018206497
Kind Code:
A
Abstract:
To solve such problems that, while, in some circuit breakers, as trip means, an opening is provided to a bottom surface of a housing and a safety device including an actuator for actuating an opening/closing mechanism when a circuit breaker is removed from an attaching/fixing part is mounted to the opening, it was necessary to provide an opening to a bottom surface of a circuit breaker and to secure an arrangement space at the inside thereof, and it was also difficult to ensure insulation around the opening of the bottom surface and to take measures for airtightness in circuit breaking.SOLUTION: In a safety device, a safety device unit is configured to be detachable freely, the safety device unit including: an actuator urged by an elastic member in a direction to actuate a trip unit of a circuit breaker; and a rod which is formed to protrude from a base bottom surface by an urging force from the actuator and which locks, in a state where protrusion is pushed back, the actuator in a position where the trip unit is not actuated.SELECTED DRAWING: Figure 4

Inventors:
渡辺 和昌
Application Number:
JP2017107349A
Publication Date:
December 27, 2018
Filing Date:
May 31, 2017
Export Citation:
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Assignee:
三菱電機株式会社
International Classes:
H01H73/02; H01H9/20
Attorney, Agent or Firm:
大岩 増雄
竹中 岑生
村上 啓吾
吉澤 憲治