Product Overview
National Instruments SCXI-1326 Shielded 300 Vrms Terminal Block for SCXI-1162 and SCXI-1163 Modules
Condition
Used, sourced from a government research facility. Condition is consistent with normal service life: light scuffing on housing edges, minor paint chip on upper edge, no missing hardware observed. Serial number 1150994, revision 2.1, part number 185700B-01, Made in Hungary. Rear connector pins intact. Evaluation: Visual inspection only. Function testing not performed.
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Product Overview
National Instruments SCXI-1326 is a shielded, diecast metal high-voltage terminal block designed to interface field wiring directly to the front connector of compatible SCXI signal conditioning modules. It houses 48 internal screw terminals inside a fully enclosed metal shell, rated for up to 300 Vrms (Category II) channel-to-channel and channel-to-earth isolation. Wire entry is through a front strain-relief slot. Compatible modules include the SCXI-1162, SCXI-1162HV, SCXI-1163, and SCXI-1163R. This unit carries internal part number 185700B-01 and is also cataloged as 777687-26.
Key Features
- Maximum isolation voltage: 300 Vrms, Category II, channel-to-channel and channel-to-earth
- 48 internal screw terminals for field wiring connections
- Shielded diecast metal enclosure with captive thumbscrew grounding
- Front strain-relief slot for wire entry and routing
- Rear proprietary connector mates directly to SCXI-1162, SCXI-1162HV, SCXI-1163, SCXI-1163R
- No cold-junction compensation sensor - not intended for direct thermocouple measurement
- Operating temperature: 0 to 50 °C
- Internal part number 185700B-01, revision 2.1, Made in Hungary
Applications
- Replacing a damaged or failing terminal block on an active SCXI chassis mid-campaign to avoid test downtime in an industrial or aerospace lab
- Connecting high-voltage AC or DC signal lines to an SCXI-1162HV digital input module with the safety isolation required for mains-referenced signals
- Maintaining legacy SCXI data acquisition systems in automotive test cells, government research facilities, or university laboratories where the platform remains in service
- Re-terminating field wiring on an SCXI-1163 relay output module during a system refurbishment or channel reassignment
Frequently Asked Questions
Which SCXI modules is the SCXI-1326 compatible with?
The SCXI-1326 mates directly to the SCXI-1162, SCXI-1162HV, SCXI-1163, and SCXI-1163R. It is not compatible with other SCXI modules - the SCXI-1124, for example, requires the SCXI-1325, and thermocouple modules require terminal blocks with cold-junction compensation, which the SCXI-1326 does not have.
Can this terminal block be used for thermocouple measurements?
No. The SCXI-1326 does not include a cold-junction compensation sensor. It is designed for high-voltage digital or relay wiring, not thermocouple signal acquisition.
What is the 185700B-01 number on the label?
185700B-01 is the National Instruments internal part number printed on the housing label. The catalog ordering number for this terminal block is 777687-26. Both identify the same SCXI-1326 terminal block.
Are all screws and hardware present on this unit?
The captive thumbscrew is visible and present. No missing hardware was observed during visual inspection. Function testing was not performed.
Is this compatible with NI DAQmx or newer NI hardware?
No. The SCXI-1326 is specific to the NI SCXI platform and requires an SCXI chassis and one of the four compatible SCXI modules listed above. It is not compatible with NI DAQmx-only hardware, cDAQ, or PXI signal conditioning without an SCXI chassis in the signal path.
The SCXI platform may be legacy, but the test systems built on it are still running shifts somewhere right now - and when a terminal block fails, the whole channel goes dark. This one is ready to go back to work.
