The Z-DSU1-102 is part of Eaton’s line of transformer control and protection systems. It is a double-side universal transformer control device used to manage and protect two-phase transformers with up to two windings on the HV side and three windings on the LV side. The product includes three general protective functions: overload protection, grounded winding protection, and differential/residual protection. It's programmable scheduler can be used to control various functions, including voltage regulation, transformer switching, and protection functions. The Z-DSU1-102 is a compact, modular device for easy installation and comes in a durable, compact housing to protect the internal circuit and components from chemicals, dirt, moisture, and vibration.