Schneider Electric 15T3HIS Three Phase Insulated Transformer

Schneider Electric's Square D Sorgel 15T3HIS is a 15 kVA three-phase insulated transformer that accepts a 480 V input and provides a 208Y/120 V output, enabling reliable step-down distribution from a 480 V three-phase supply to standard 120/208 V service for controls, lighting, and equipment in commercial and light-industrial settings. Identified by catalog number 15T3HIS, this general-purpose Sorgel transformer delivers isolation between windings while supplying balanced three-phase power. The 480 V delta primary and 208Y/120 V secondary configuration is a common solution for feeding panelboards, motor-control centers, and control circuits from a higher-voltage distribution, reducing the need for multiple single-phase transformers. Built for Schneider Electric’s Square D line, it is designed to integrate with standard Square D panels and accessories, offering a compact, robust platform for mid-range power distribution and control applications.