Air circuit breaker
AssigneeLs Electric Co., Ltd.
InventorKyu Ho LEE
Life of this patent
Estimating the term…
Abstract
An air circuit breaker is disclosed. The air circuit breaker according to an embodiment of the present disclosure includes a cover magnet unit. The cover magnet unit is directly coupled to an upper cover which forms the outer appearance of the air circuit breaker. The cover magnet unit is positioned adjacent to a fixed contact and forms a magnetic field. Due to the formed magnetic field, an electromagnetic force in a direction toward an arc extinguishing unit is applied to a generated arc. Accordingly, the generated arc may be rapidly moved and extinguished. The cover magnet unit is inserted into a surface of the upper cover and is not exposed to the outside. Therefore, the generated arc is not in contact with the cover magnet unit. As a result, the cover magnet unit is not damaged by the generated arc.
Claims15
An air circuit breaker comprising:
- an upper cover that includes a space therein;
- a fixed contact that is accommodated in the space of the upper cover;
- a movable contact that is accommodated in the space of the upper cover, is positioned adjacent to the fixed contact, and is moved in a direction toward or in a direction away from the fixed contact;
- an arc extinguishing unit that is accommodated in the space of the upper cover and is positioned adjacent to the fixed contact to extinguish an arc extending from the fixed contact toward the movable contact;
- and
- a cover magnet unit that is coupled to the upper cover and is positioned adjacent to the fixed contact to form a magnetic field for applying an electromagnetic force to the arc.
An air circuit breaker comprising:
- an upper cover that includes a space therein;
- a fixed contact that is accommodated in the space of the upper cover;
- a movable contact that is rotatably accommodated in the space of the upper cover and is positioned on a rear side of the fixed contact to be in contact with or spaced apart from the fixed contact;
- an arc extinguishing unit that is accommodated in the space of the upper cover and is positioned above the fixed contact to extinguish an arc provided between the fixed contact and the movable contact;
- and
- a cover magnet unit that is coupled to the upper cover and is positioned on a left or right side of the fixed contact to form a magnetic field for applying an electromagnetic force to the arc.
Dependencies are inferred from the claim text.