Abstract: A transformer includes a core assembly having a coil, a core with at least a portion extending through the coil, and terminals for providing electrical connection with the transformer. The core assembly is impregnated with a thermally conductive material to form a unitary core mass. An outer coating which is also highly thermally conductive encapsulates the core mass. The outer coating includes a plurality of finned or ribbed surfaces that provide an increased heat transfer area to a surrounding cooling medium such as air.

Abstract: Adapter for securing a terminal block, such as the standard terminal block on a transformer, to one or more standard fuse blocks, requiring a minimum of parts and mounting space. An adapter plate is interposed between the terminal block and the bottom of the fuse block and secured to each. In one embodiment, the conventional terminal screws of the terminal block are used to secure the adapter to the terminal block. In the illustrated embodiments, the adapter plate does not provide any electrical connection between the fuse block and terminal block, this being provided by jumper wires having their respective wire terminals secured to terminals of a joined terminal block and fuse block.