The Tektronix CT-5 High Current Transformer is designed to extend the range of an A6302 probe (with AM503 amplifier) or P6021 probe by a factor of 1000 (up to 5000 A/Div).
Key Specifications
Bandwidth
0.5 Hz to 20 MHz with A6302; 12 Hz to 20 MHz with P6021; 1 Hz to 1 MHz with A6302/DC Bucking Coil