AC contactor arc control device

The invention discloses an arc extinguishing device of an alternating current contactor, including a movable contact, two U-shaped static contacts and arc extinguishing mechanisms which are positioned at the both sides of the movable contact, and the invention is characterized in that: a first arc s...

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Bibliographic Details
Main Authors HUANG ZHANGWU, DONG RENYONG, CHEN YANMING, GAO WENLE
Format Patent
LanguageChinese
English
Published 09.07.2008
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:The invention discloses an arc extinguishing device of an alternating current contactor, including a movable contact, two U-shaped static contacts and arc extinguishing mechanisms which are positioned at the both sides of the movable contact, and the invention is characterized in that: a first arc starting part which is used for increasing the magnetic field strength is arranged on the movable contact. The invention can effectively increase the magnetic field strength, thereby increasing the velocity of arc and improving the arc extinguishing effect.
Bibliography:Application Number: CN20071305298