National Instruments FP-RLY-420 Relay Module

National Instruments FP-RLY-420 Relay Module

Part Number: 185151A-01, 185151B-01, 185151C-01, 185151D-01, 777518-420

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Stock # 56669-2
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National Instruments FP-RLY-420 / FP-RLY-422 Relay Module

  • -40 to 70°C Operating Range
  • 4 Electromechanical Relays
  • Isolated Input-Output (2,500 Vrms Breakdown Isolation)
  • Non-Latching, SPDT Relays
  • Switch Up to 3 A at 35 VDC or 250 VAC


The National Instruments FP-RLY-420 / FP-RLY-422 devices are versatile relay modules used to control digital signals ranging from low voltages to 125 VDC and to 250 VAC. They include onboard diagnostics to ensure trouble-free maintenance. These modules are used to control motors, indicator lights, and power circuits.

The FP-RLY-422 module has the following features:
- 4 Single-Pole Double-Throw (SPDT) relay channels
- Hot plug and play operation
- On/Off LED indicators
- Switching capacity 3 A at 35 VDC or 250 VAC
- 3,000 V input to output isolation
- Double insulated for 250 V safe working voltage
- –40 to +70 °C operation

Product Family: FPRLY422, fp-rly-422, fprly-422, fp-rly422, 777518-422

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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National Instruments FP-RLY-420 / FP-RLY-422 Relay Module
National Instruments FP-RLY-420 / FP-RLY-422 Relay Module

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