Air circuit breaker
AssigneeLs Electric Co., Ltd.
InventorHan Baek Chung
Life of this patent
Estimating the term…
Abstract
Disclosed is an air circuit breaker. The air circuit breaker according to an embodiment of the present disclosure includes a CT magnet unit. The CT magnet unit is provided in the air circuit breaker to cover a movable contact point exposed to the outside. A CT magnet is provided inside a case that forms the outer shape of the CT magnet unit. The CT magnet independently forms a sub magnetic field or forms a main magnetic field together with an extinguishing magnet provided in an arc extinguishing unit. Due to the magnetic field formed by the CT magnet, an arc that is generated receives the application of an electromagnetic force directed toward the arc extinguishing unit. Accordingly, the generated arc can be quickly moved and extinguished.
Claims9
An air circuit breaker comprising:
- a fixed contact;
- a movable contact that moves in a direction toward the fixed contact or in a direction away from the fixed contact;
- and
- an arc extinguishing unit that is positioned adjacent to the fixed contact and the movable contact to extinguish arc generated by the fixed contact and the movable contact being spaced apart;
- and
- a magnet unit that is disposed on an opposite side of the arc extinguishing unit with respect to the fixed contact and the movable contact and partially covers a movable contact stand to which the movable contact is coupled to be energized,
- wherein the magnet unit includes a path-forming magnet that forms a magnetic field in a direction from the magnet unit toward the arc extinguishing unit or from the arc extinguishing unit toward the magnet unit, and
- wherein direct current (DC) is energized through the air circuit breaker.
Dependencies are inferred from the claim text.