The Nordyne 1039295 Circuit Adapter (also sold as Nordyne 1039295 Jumper Bar and equivalent variants) is a 4-pole, 100 amp jumper bar with accessories designed to facilitate safe, high-current electrical connections in HVAC systems. It bridges multiple circuits or components such as sequencers, contactors, or terminal blocks within packaged units, furnaces, and commercial rooftop HVAC equipment by providing a stable conductive path rated for heavy load distribution.