The NI TB-4357 is a front-mount terminal block that serves as the field-wiring interface for the NI PXIe-4357 temperature input module. It connects 2-, 3-, and 4-wire RTDs directly to PXI chassis hardware via 80-pin screw terminals rated for up to 14 AWG wire. The spring-loaded latching mechanism enables quick connection and disconnection, while the integrated strain-relief bar organizes cable routing and protects against mechanical stress.
Technical Specifications
Electrical Performance
• Maximum voltage measurement: 60 V
• Channel-to-earth isolation: Up to 60 VDC
• Trace resistance: <70 mΩ
• Resistance measurement range (with PXIe-4357): Up to 400 Ω
• Excitation current (with PXIe-4357): 0.9 mA per channel
• Measurement Category I (non-distribution circuits only)
Connector & Interface
• Input: 96-pin female DIN connector
• Output: 80-pin female screw terminal
• Maximum wire gauge: 14 AWG
• Integrated ground lugs for shield termination
Environmental & Physical
• Operating temperature: ≤55 °C ambient
• Weight: ~2 lbs
• Mounting: Front-mount PXI module mechanism
• Indoor use only
– Key Features
• Spring-loaded latching mechanism for fast field connections
• Integrated strain-relief bar prevents cable damage and improves organization
• Front-mounting design simplifies installation and module replacement
• Supports 2-, 3-, and 4-wire RTD sensor configurations
• Low trace resistance (<70 mΩ) minimizes measurement error
• Ground lugs enable proper EMI shielding and cable management
– Typical Applications
• Distributed temperature acquisition in industrial control systems
• Multi-channel RTD measurement in data centers and HVAC facilities
• Laboratory test benches requiring modular temperature sensing
• Environmental monitoring networks with field-mounted sensors
– Compatibility & Integration
The TB-4357 pairs exclusively with the NI PXIe-4357 20-channel RTD module. It connects via NI-DAQmx driver on Windows platforms, enabling programmatic control and data logging. Safety low-voltage (30 Vrms). The terminal block cannot be supplied with hazardous voltages unless connected to the PXIe-4357 module.
