The RT61 Ratio Transformer is a low cost precision inductive voltage divider. It provides five decades of transformer switching while covering the 30Hz to 400Hz frequency range and offers resolution of 0.001% steps. The maximum ratio is 1.1111. Maximum input voltage of 350 VAC. The RT61 can be cascaded for additional resolution, and features a rotary switch/normal duty. This ratio transformer weighs approximately 8 lbs., and is half-rack size.