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Entry type: FAQ Entry ID: 21383168, Entry date: 02/08/2017
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Permissibility of objects in the arc quenching spaces of 3RV circuit breakers

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This article contains information on the permissibility of objects in the arc quenching spaces of circuit breakers.

QUESTION:

Are only live parts, if any, allowed in the quenching spaces of 3RV circuit breakers?

 

 

ANSWER:

No objects are permitted in the specified arc quenching spaces as this could cause any gas pressure that builds up as a result of short-circuit tripping to back up. This excludes non-conductive objects with a small face surface and low volume such as vertical phase barriers for components on the top.
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