Brand: BLOCK Item: Transformer Connection: Screw terminals Includes: Primary voltage selection jumpers Series: CT Mounting: Panel Power Rating: 500 VA Number of Phases: 1 Fused: No Frequency: 50/60 Hz Transformer Type: Control Core Type: Open Primary Voltage: 240/480 VAC Secondary Voltage: 120 VAC Electrostatic Shield: No BLOCK control transformer, open core, 500 VA, 1-phase, 240/480 VAC, 120 VAC secondary, 50/60 Hz, panel mount.