The SSA-2-500A from Bourns is a Current Transducer with AC Input Current 500 A, DC Input Current 500 A, Supply Voltage 3.0 to 5.5 V, Power Consumption 17 W, Accuracy -0.2 to 0.2 %. Tags: Screw Mount, AC Current Transducer, DC Current Transducer. More details for SSA-2-500A can be seen below.