The Hammond 166L5 is an economical single primary filament transformer designed for a wide range of applications. It features a 115V 60Hz primary and a 5 C.T. secondary, providing a reliable power source for lighting and other low-voltage devices. The open-style chassis mount design with channel bracket and two-hole mounting ensures easy installation, while the dual bobbin design eliminates the need for electrostatic shielding. With Class B insulation and UL/CSA certifications, the 166L5 offers enhanced safety and performance.