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Entry type: FAQ Entry ID: 21383168, Entry date: 02/08/2017

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.


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




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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