Current is the second window onto a motor, and a current transformer is how you open it without breaking the circuit. These clamp around a conductor and report what is flowing through it.
Four are covered. Three are split-core, rated 30 A, 100 A and 200 A, each giving 5 V at full scale. The fourth is a Rogowski coil rated to 10000 A, which is the one for a main feeder or a large drive where a solid core would be impractical.
The datasheet explains how they work, how to fit them, what they feed on the platform side, and gives the full electrical detail for each of the four.