The shunt trips work upon applied voltage.
You will need to wire two breakers in parallel.
One side of the shunt coils will wire to a neutral or neutral bar, (this is assuming 120 v shunt trip units) the other sides get the voltage through the Ansul switch. You will feed the Ansul common with 120 v and wire your switch leg to the open switch conductor when the Ansul system is cocked.
Roger
[This message has been edited by Roger (edited 08-17-2006).]