USI is proud to have represented The Durham Company for nearly half a century!  During those years Durham has become the primary domestic supplier of high-quality cabinets used by electric power companies.  We also offer Test Switches, Instrument Transformers, and Electrical Connectors. The Carr family has owned Durham since 1960 and continues to be actively involved with daily operations.  Innovative products below include both a primary metering cabinet and sectionalizing pedestal, trans sockets, CT’s and PT’s, mechanical transformer connectors and an extender bar.  Contact us for more information. 800-733-4837 – Joe Thornton