Universal Dynamics Una-Dyn Gas Pack Plastics Air Dryer: Model No. 2000 CFM, S/N: 30215GD02, 460V, 3PH, 6A, 4.80 KVA, Gas Pack Control: Model No. 2000 CFM, S/N: 30215DP06, 460V, 3PH, 6A; Heavy Duty Safety Switch: 480V