Abstract: A molded case circuit breaker has paddles on the trip bar to utilize the arc gases generated during interruption to speed operation of the latchable operating mechanism and to protect the trip mechanism from debris in the arc gases. Alternatively, or in addition, lateral projections can be provided on the crossbar for similar purposes.

Abstract: A filter element for separating fine dirty particles from a hot gas. The filter element comprises a first porous wall and a second porous wall. Each porous wall has an outer surface and an inner surface. The first and second porous walls being coupled together thereby forming a substantially closed figure and open at one end. The open end is formed to be coupled to a hot gas clean up system support structure. The first and second porous walls define a channel beginning at the open end and terminate at the closed end through which a filtered clean gas can flow through and out into the clean gas side of a hot gas clean up system.