Hi David.
I understand that you are trying to introduce a delay of 120 degrees to the current through the load. However, the constant current load block cannot be connected to PS blocks, as it can only be used with electrical circuits, for use with DC or AC sources, as provided in the documentation:
Introducing a delay directly in the Simscape Electrical based circuit is not possible. The PS-Variable delay block can, however, introduce a delay to physical signals or sources, passed as input to the controlled voltage or current source blocks, available in Simscape Electrical. These sources can then be used with the constant current load block in the electrical circuit.
I hope this solves your issue.
