Bushing.

Eaton has a full line of one-piece bushings, bushing wells, bushing well inserts, and feed-thru inserts in its Cooper Power series products for installation on transformers and/or sectionalizing cabinets. The 15 kV and 25 kV class bushing inserts use a knurled piston providing maximum copperto-copper current transfer and maximum thermal stability. After fault close operation, it locks the piston in the outward position, providing a visible indication against dangerous repetitive fault closure.