Breaker secondary terminal block isolation chamber

摘要

The disclosed concept pertains generally to secondary terminal blocks and, more particularly, to apparatus and methods for isolating the secondary terminal blocks and associated wiring in electrical switching assembly enclosures. The apparatus includes a housing having an outer surface structured to form a cavity therein. The apparatus is positioned in an enclosure which includes an electrical switching apparatus and one or more secondary terminal blocks. The one or more secondary terminal blocks are positioned in the cavity such that the apparatus at least substantially isolates the one or more secondary terminal blocks from the electrical switching apparatus. Further, the apparatus is effective to substantially isolate the secondary terminal blocks from temperature and pressure effects resulting from an arcing fault occurring in the enclosure.

主权项

1. An apparatus, comprising:
a housing which comprises an outer surface structured to form a cavity therein; at least one adjustable slot formed through the outer surface in the housing, the at least one adjustable slot structured to receive one or more connecting wires; and one or more secondary terminal blocks having one or more connection apertures formed therein and structured to receive an end of the one or more connecting wires, the one or more secondary terminal blocks positioned within the cavity, wherein said apparatus is positioned in an enclosure which comprises an electrical switching apparatus, and wherein the apparatus at least substantially isolates the one or more secondary terminal blocks and the one or more connecting wires from the electrical switching apparatus.