This is a great board to post your question. Unfortunately, you cannot use the SCXI-1141 with the TBX-1303. The TBX-1303 is designed for thermocouple measurements and can be used with the SCXI-1102B/C, SCXI-1100, or SCXI-1181. You can use the SCXI-1141 with the SCXI-1304 or SCXI-1305. Here is a great document about terminal blocks to help you with your future decisions.