THIS IS A HAMMOND POWER SOLUTION 45 KVA, 3-PHASE TRANSFORMER, MODEL NMK045KB, WITH A GE HEAVY DUTY SAFETY SWITCH. IT FEATURES A PRIMARY VOLTAGE RATING OF 480V AND A SECONDARY VOLTAGE RATING OF 208Y/120V, OPERATING AT A 60HZ FREQUENCY. THE UNIT UTILIZES ALUMINUM WINDING AND IS DESIGNED FOR A 150 DEGREE C TEMPERATURE RISE. CONSTRUCTION IS VENTILATED WITH A NEMA 3R ENCLOSURE RATING. THE ENCLOSURE DIMENSIONS ARE 29.00 X 21.50 X 19.50" (H X W X D), AND THE TOTAL WEIGHT IS 370 LB. (168KG).