Acme Electric T-1-11685 Transformer, Encapsulated Core And Coil Buck-Boost, 120/240 V, 12/24 V, 40.8 KVA/175 AMP: 252 V Line And 240 V Load Buck Voltage, 20.1 KVA/83.3 AMP: 220 V Line And 242 V Load Boost Voltage, 60 HZ, 1 PH, 166 AMP At 12 V, 83.2 AMP At 24 V, 115 DEG C Rise, Wire Lead Screw Terminal Connection, 180 DEG C Class H Insulation, Wall Mounting, NEMA 3R, 5-1/2 IN Length, 5.13 IN Width, 13 IN Height, 2 KVA, Steel, Configuration: Primary: Two Winding, Secondary: Two Winding, UL 506, UL File Number E79947V1, UL Control Number 50B8, UL Insulation Number X3221, CSA Certified, OSHA Compliant, ANSI, IEEE, For Low Voltage Lighting Or Control Circuitry