T-45 power armor is a power armor set in Fallout 4. It was originally developed and manufactured for the United States Army by American defense contractor West Tek. The T-45 power armor was the first version of power armor to be successfully deployed in battle.
Developed in early 2077 after the Anchorage Reclamation , the T-60 series of power armor was designed to eventually replace the T-51 power armor as the pinnacle of powered armor technology in the U.S. military arsenal. Incorporating design elements from the earlier T-45, the T-60 was deployed domestically among U.S. Army units just prior to the dropping of the bombs.