ABB SS-5 Gray Case Trip Unit Question

[wbd]

I have searched the online info, including manuals but have not found a definitive answer for this question so hoping someone (Zog?) may be able to answer this. The above trip unit is on a ITE K-600 breaker and the unit Ampere Tap is set to 400A. My question is are the CT's tapped to match the SS-5 trip unit tap setting? Or can the tap be lowered to 250A by just moving the tap plug and there is no associated tap of the CT?

 

[JG2828]

I'm pretty sure the current sensors do not have any sort of taps. All pickup settings are changed by moving the pins on the Trip Unit.