The Series 6000 split core CTs (CTSxx part#) do use a 333mV output, but they are not interchangeable with our other 333mV CTs. The S6000 meters are designed for use with these custom, auto-ranging CTs and they require an RJ12 connection.
The Rogowski CTs are not 333mV. Most Rogowski CTs, including these are tailored for the meter inputs. Only the CRS4K or CRS6K Rogo CTs are compatible with Series 6000 meters.