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US 10,141,140 B2Granted
Air circuit breaker
AssigneeLsis Co., Ltd.
InventorWoojin Park
Life of this patent
Estimating the term…
Abstract
The present invention relates to an air circuit breaker, in which a recess is formed on one side or each of both sides of each contact plate provided in an insulating cage so as to reduce a contact area between a movable contactor and the contact plate when the movable contactor and the contact plate are brought into contact with each other, thereby preventing a contact portion between the movable contactor and the contact plate from being melted due to heat generation.
Claims9
An air circuit breaker comprising:
- an insulating cage provided with a plurality of contact plates;
- movable contactors each inserted between the contact plates;
- and
- fixed contactors brought into contact with or separated from the movable contactors in response to a movement of the movable contactors,
- wherein each of the contact plates is provided with a recess,
- wherein the recess is inclined toward an inside of the contact plates from rear sides of the contact plates to front sides of the contact plates,
- wherein in a connected state, the movable contactors are pushed toward the insulating cage to be inserted between the contact plates and thus brought into contact with the contact plates, and
- wherein a middle part of the movable contactors does not contact the contact plates by the recess.
5 more elements
An air circuit breaker comprising:
- an insulating cage provided with a plurality of contact plates;
- movable contactors each inserted between the contact plates;
- and
- fixed contactors brought into contact with or separated from the movable contactors in response to a movement of the movable contactors,
- wherein each of both side surfaces of the contact plates is provided with a recess,
- wherein the recess has a rectangular or circular section, and
- wherein the recess is provided in plurality, and a depth of each of the recesses changes as the recess extends from a rear to front sides of the contact plate.
4 more elements
An air circuit breaker comprising:
- an insulating cage provided with a plurality of contact plates;
- movable contactors each inserted between the adjacent contact plates;
- and
- fixed contactors brought into contact with or separated from the movable contactors in response to a movement of the movable contactors,
- wherein each of the contact plates is provided with a recess,
- wherein the contact plate and the insulating cage are made of different materials from each other, and
- wherein the contact plate is made of a material having relatively higher thermal resistance than that of the insulating cage.
4 more elements
Dependencies are inferred from the claim text.