MULTIPOLAR CIRCUIT BREAKER
PROBLEM TO BE SOLVED: To provide a multipolar circuit breaker having a large breaking capacity by preventing arc gas from blowing from the side surface in breaking short circuit current. SOLUTION: A ceiling 1a and a bottom surface 1b of an extinguishing case 1 for storing a fixing contact 3 and a mo...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a multipolar circuit breaker having a large breaking capacity by preventing arc gas from blowing from the side surface in breaking short circuit current. SOLUTION: A ceiling 1a and a bottom surface 1b of an extinguishing case 1 for storing a fixing contact 3 and a movable contact 6 for generating arc and an extinguishing device 9 for extinguishing arc in breaking short circuit current, and a sidewall connecting the ceiling to the bottom surface are continuously structured not to produce a clearance by outward inner pressure, thereby preventing arc gas or the like from blowing from the side surface part. |
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