The Hammond 166N12 is an economical single primary filament transformer designed for a variety of applications. It features an open-style, channel bracket, and two-hole chassis mount, along with minimum 6" long leads for easy integration. The transformer utilizes a dual bobbin design, eliminating the need for electrostatic shielding. Constructed with Class B insulation (130 degrees C) and UL listed as a Class A (105 degree C) design, it provides reliable performance and safety. It undergoes a Hi-Pot test of 2,000V RMS and is CSA certified, ensuring high quality and adherence to industry standards.