NI SCXI-1325 High-Voltage Isolated Screw Terminal Block

The NI SCXI-1325 is a dedicated high-voltage isolated terminal block exclusively matched with the SCXI-1124 isolated analog output module. It is equipped with 26 screw terminals and supports independent wiring configuration for each channel in voltage or current output mode, featuring 250 Vrms isolation between channels and to chassis ground.

This legacy SCXI accessory adopts isothermal construction to guarantee analog output precision. It is widely used as spare replacement for industrial control systems, component test benches and old NI measurement platform renovation projects with high common-mode voltage interference.

Main Specifications

Brand: NI (National Instruments); Model: SCXI-1325; Type: High-Voltage Isolated Terminal Block
Matching Module: SCXI-1124 6-channel isolated analog output module
Terminal Configuration: 26 screw terminals, compatible with 26–14 AWG field wire
Isolation Rating: 250 Vrms channel-to-channel and channel-to-ground, CAT II rated
DC Rejection: ±50 VDC under 1 MΩ common mode condition
Operating Environment: 0℃ ~ +50℃, 5%‑95% RH non‑condensing
Certifications: CE, UL, CSA, compliant with IEC 61010-1 safety standards

Core Functions

Provide reliable field wiring interface for SCXI-1124 analog voltage and current output channels.
High isolation design eliminates ground loop interference under high common-mode industrial environments.
Isothermal structure reduces temperature drift and maintains long-term analog output accuracy.
Support independent channel configuration to adapt different actuator control signal requirements.
Screw terminal design allows repeated wiring, on-site debugging and rapid maintenance replacement.
Direct front mounting structure fits standard SCXI chassis for convenient assembly and disassembly.

Application Scenarios

Industrial process control systems for regulating valves, actuators and analog drive equipment.
Aerospace and automotive component test benches requiring isolated analog control signals.
Retrofit and spare replacement of legacy NI SCXI distributed measurement and control platforms.
Laboratory automated calibration equipment and precision material performance testing systems.
Maintenance spare inventory for test system integrators and engineering contractors.
Global aftermarket spare supply for teams maintaining discontinued NI DAQ measurement hardware.