Siemens 61-300-052-518 current transformer is used to convert higher AC currents to a lower, measurable secondary current for instrumentation and protection in electrical systems. The part number is 61-300-052-518. The specification listings show two ratio configurations: 4000:1 and 2000:0.5 A, corresponding to a primary-to-secondary relationship of 4000 A to 1 A or 2000 A to 0.5 A. This device is designed to integrate with Siemens equipment and other current-measurement setups requiring a proportional secondary current for monitoring and protection circuits.
