The Hammond 166G9 is an economical single primary filament transformer suitable for a variety of applications requiring 115V 60Hz operation. It features an open style, channel bracket, and two-hole chassis mount, along with minimum 6" long leads for easy integration. The dual bobbin design eliminates the need for electrostatic shielding, and the Class B insulation (130 degrees C) provides enhanced protection. It is UL listed and CSA certified, ensuring reliable performance and safety.