Is it possible to use the 4 pole vigi module with the 3 pole Compact NSX MCCB.

Yes, it is possible to connect the 4 pole Vigi module with the 3 Pole Compact NSX MCCB.

For fixing the 4 pole Vigi with 3 Pole Compact NSX100 to Compact NSX250, you have to also order the LV429214
and with 3 Pole Compact NSX400 to Compact NSX650, you have to order the LV432457.

Refer the attached Installation Manual for 4 Pole Vigi module with compact NSX MCCB showing the mounting
arrangement of 4 pole Vigi module with 3 pole Compact NSX MCCBs.