This autotransformer from Standard Electric, model number 100BU, has a power rating of 165 VA and operates at a primary voltage of 120V AC with a frequency of up to 60 Hz. The mounting style is panel mount and it has solder terminal plugs and termination. It is a 1-phase transformer with a secondary voltage rating of 0-132V AC and a secondary current rating of 1.25 Amp.