Moving seal with arc creepage surface for an air circuit breaker

摘要

A moving seal (150) for an air circuit breaker provides an arc creepage surface (152) that is positioned between a pair of separable contact assemblies when the moving seal is fit into an inlet of the arc chamber. The arc creepage surface has a surface contour that increases a length (D') of an arc travel path between the separable contact assemblies, relative to a straight line distance (D) between of separable contact assemblies.