The TCT40-01E07K is a UL-listed Class 2 control transformer designed to supply 40VA of power. It accepts a 120V, 50/60 Hz input and provides a 24V output at 1.67A. Key features include a typical voltage regulation of 15%, a temperature rise of less than 40°C, and a high-potential test rating of 1500VAC. The transformer is inherently limited, requiring no external fusing, and features a three-flange bobbin construction for low capacitive coupling. Common applications include HVAC systems, control boards, and lighting where a Class 2 transformer is required.