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40-166-201 PXI 20A SP4T Power Relay Module
40-166-201 PXI 20A SP4T Power Relay Module


The 40/42-166-203 is a PXI/PXIe high density power relay module with 1xSP4T switches rated at 20A. The 40/42-166 range is available with SPST,  SPDT or SP4T switching configurations. It uses power relays which are suitable for switching loads up to 20A at 240VAC (SPDT & SP4T versions) or 30A at 277VAC (SPST versions).

Power Relay Modules are intended for switching heavy AC or DC loads or for controlling large external relays, contactors and solenoids. The 40/42-166 is suitable for applications requiring switching of either mains voltage or DC current.

Key Features

  • Available as a PXI or PXIe Module
  • High Density, High Current Switching 
  • SPST, SPDT or SP4T Configurations
  • 20A (SPDT & SP4T) & 30A (SPST) Maximum Switch Current
  • Switch up to 480VAC or 300VDC
  • 5500VA/600W Maximum Power (SPST)
  • Connector Keying for 20A & 30A Versions
  • Drivers supplied for Windows and Linux, plus support for Real-time systems
  • Supported by PXI or LXI Chassis
  • 3-Year Warranty
* Note: Product image above may be a different model in this range and is for illustrative purposes only

Product specifications

If no specifications are present, please see the product datasheet in this section. 

Please note: In some cases, for products like our Scalable LXI Chassis, the specifications can be found on the datasheets for the associated plugin modules that are inserted into these chassis. To find these modules, go to the "Also in the Range" link above.

Need to narrow down your search by specifications, try our Product Selector

Product Type: General Purpose Relays
Platform: PXI, PXIe
Switch Type: EMR
Relay Contacts: SP4T
Max I (A): 20
Max V DC: 300
Relays: 10
Poles: 1


PDF Datasheet
Includes full information and specifications
PDF, 819.38 KB
PDF Manual
Includes manual, extended specifications, installation instructions and data
PDF, 3.09 MB
Related 20 Pin Scorpion Connector Accessories Datasheet
A complete list and documentation for mating connection accessories
PDF, 1.58 MB
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