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NI (National Instruments) · PXI

PXI-2520

The NI PXI-2520 is an 80-channel electromechanical PXI relay module with independent SPST (normally open) relays. It supports maximum switching voltages of 150 V AC or DC and a maximum DC switching current of 2 A.

ManufacturerNI (National Instruments)

ModelPXI-2520

Part Number778572-20

Product Type80-Channel, 2 A, SPST PXI Relay Module

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Scan Rate145 cycles/s

Bus ConnectionPXI Hybrid

Maximum Switching Current DC2 A

Maximum Switching Voltage DC150 V

Relay ConfigurationSPST (open)

Switch Bandwidth35 MHz

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Overview

Product overview

Key product information and technical features.

The PXI-2520 provides 80 independent single-pole single-throw (SPST) Form A armature relays in the PXI platform. Its electromechanical relays are normally open and nonlatching, and the module has a PXI Hybrid bus connection.

The module is fully software programmable and supports onboard relay count tracking. Its relay design provides low on-resistance and low thermal offsets; row access is also supported.

80 channels with 80 independent electromechanical relays.
Nonlatching SPST Form A relays with normally open contacts.
Maximum switching voltage of 150 V AC or 150 V DC.
Maximum DC switching current of 2 A and maximum AC carry current of 2 A.
35 MHz switch bandwidth and a scan rate of 145 cycles/s.
Software-programmable operation with onboard relay count tracking.

Verified specifications

Technical data

Verified product specifications.

Scan Rate	145 cycles/s
Bus Connection	PXI Hybrid
Maximum Switching Current DC	2 A
Maximum Switching Voltage DC	150 V
Relay Configuration	SPST (open)
Switch Bandwidth	35 MHz
Number of Relays	80
Supported Hardware Platform	PXI
Maximum Carry Current AC	2 A
Maximum Switching Voltage AC	150 V
Number of Channels	80
Relay Type	Electromechanical
Row Access	Yes
NI part numbers	778572-20

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NI

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PXI

Supported Hardware Platform

PXI-2520

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Letter Of Volatility (NI)Letter Of Volatility · ni.com

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Specifications (NI)Specifications · ni.com

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Getting Started (NI)Getting Started · ni.com

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Dimensional Drawings (NI)Dimensional Drawings · ni.com

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Product Page (NI)Product Page · ni.com

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FAQ

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Product-specific answers based on available technical information.

What relay configuration does the PXI-2520 use?

It uses 80 independent SPST Form A armature relays. The contacts are normally open, and the relays are nonlatching.

What are the voltage and current limits?

The recorded maximum switching voltages are 150 V AC and 150 V DC. Maximum DC switching current is 2 A, and maximum AC carry current is 2 A. These are separate ratings; consult the NI specifications for operating conditions before selecting a load.

Does the PXI-2520 support relay count tracking?

Yes. The module is fully software programmable and supports onboard relay count tracking.

What platform and interface does this module use?

The PXI-2520 is a PXI relay module with a PXI Hybrid bus connection. Confirm the specific chassis, controller, and software requirements before integration.