| http://www.w3.org/ns/prov#value | - bus bar so that terminal contacts of a circuit interrupter may be inserted into the openings when a circuit interrupter is placed in the cabinet, shutter means for closing the openings when the circuit interrupter is withdrawn from the bus bars, said means including a planar shutter extending across the spaced openings and having spaced apertures; the planar shutter being slidable between aligned
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