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National Instruments · SCXI

SCXI-1331

The National Instruments SCXI-1331 is a screw-terminal block for SCXI-1127 and SCXI-1128 switch modules. It provides front-mounted signal connections and external trigger terminals.

ManufacturerNational Instruments
ModelSCXI-1331
Part Number777687-31
Product TypeSwitch module terminal block
● Available to Order
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Free Shippingfull policy linked
30-Day Warrantystandard coverage
30-Day Returnspolicy applies
Technical Supportmodel & compatibility help
Compatible switch modulesSCXI-1127 and SCXI-1128
Signal termination64 generic screw terminals
Temperature sensingCold-junction compensation sensor
Part number777687-31
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Overview

Product overview

Key product information and technical features.

The SCXI-1331 connects field wiring directly to the switch module's front connector and is secured with thumbscrews. Its channel markings support 1-wire, 2-wire, and 4-wire configurations.

NI identifies this general-purpose terminal block for SCXI-1127 multiplexer applications and customized matrix configurations. Sockets are provided for matrix expansion cables.

  • Screw-terminal access to switch signals.
  • Terminals for external trigger signals.
  • Integrated cable strain-relief bar and safety ground lug.
  • Onboard thermistor for cold-junction temperature sensing.
Verified specifications

Technical data

Verified product specifications.

Generic screw terminals64 terminals
Supported switching configurations64 × 1, 1-wire; 32 × 1, 2-wire; 16 × 1, 4-wire
Field wire gauge26–14 AWG
Maximum wire insulation stripping length7 mm
Condition & included items

What the actual unit includes

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Condition

Confirmed per unit.

Included

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Revision

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Compatibility

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National Instruments

Manufacturer

SCXI-1127 / SCXI-1128

Host switch module in an SCXI chassis

SCXI-1331

Front-mounted signal termination

Compatibility

Designed for the SCXI-1127 and SCXI-1128 switch modules.

Check the host switch module's ratings and configuration before wiring.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI SCXI-1331 Installation InstructionsInstallation Guide · docs-be.ni.com
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SCXI Terminal Blocks Selection GuideManufacturer Catalog And Specifications · search.ni.com
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Shipping, warranty & returns

Commercial terms

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Shipping
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Warranty
30-Day Warranty. Standard coverage applies.
Returns
30-Day Returns. Return policy applies.
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Which modules accept the SCXI-1331?

NI documents front-connector installation on the SCXI-1127 and SCXI-1128.

Does it include cold-junction sensing?

Yes. The terminal block includes a thermistor temperature sensor for cold-junction compensation.

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