3F3Y045K13D16 SER J, SIEMENS LOW VOLTAGE DISTRIBUTION TRANSFORMER DRY TYPE VENTILATED, 3 PHASE, 45kVA, 480V PRIMARY VOLTAGE, 208Y/120V Secondary Voltage, Six Taps 2.5% (2 FCAN, 4 FCBN), K13 K-Factor, 150C TEMP RISE, Electrostatic Shield installed, ALUMINUM WINDINGS, meets DOE 2016 energy efficiency standards, NEMA 3R,SERIES J.