Multipolar circuit breaker

A multipolar circuit breaker of great breaking capacity prevents arc gas from blowing out from the side at the time of cutting off a short-circuit current. A stationary contact (3) and a movable contact (6) generating arcs when a short-circuit current is cut off, and an arc extinguisher (9) extingui...

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Bibliographic Details
Main Authors KANEKO, SHOZO, ASAO, YUKIHIKO, KAGARI, YOSHIAKI
Format Patent
LanguageEnglish
French
German
Published 10.07.2002
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:A multipolar circuit breaker of great breaking capacity prevents arc gas from blowing out from the side at the time of cutting off a short-circuit current. A stationary contact (3) and a movable contact (6) generating arcs when a short-circuit current is cut off, and an arc extinguisher (9) extinguishing the arc are stored in an arc extinguisher casing (1). By forming the ceiling (1b), the bottom (1a) and the sidewalls (1c) connecting the ceiling and the bottom of the arc extinguisher casing (1) in continuity so that no gap is formed by an outward internal pressure, blow out of arc gas from the sidewall portion is suppressed.
Bibliography:Application Number: EP20010125862