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National Instruments CB-37FH Horizontal DIN-rail terminal block
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National Instruments · NI DAQ connectivity

NI CB-37FH

The NI CB-37FH is an unshielded 37-pin terminal block for NI DAQ connections, mounted horizontally along a DIN rail. Screw-terminal and spring-terminal versions have distinct part numbers.

ManufacturerNational Instruments
ModelCB-37FH
Part Number778673-01 · 778676-01
Product TypeHorizontal DIN-rail terminal block
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Connector37-pin female D-SUB
MountingHorizontal DIN rail
Terminal optionsScrew or spring, depending on part number
Wire range12–30 AWG
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Overview

Product overview

Key product information and technical features.

The CB-37FH provides accessible field-wiring terminations for supported NI DAQ devices. NI identifies the FH mounting arrangement as in line with the DIN rail, unlike the perpendicular arrangement of the CB-37FV.

NI lists the CB-37FH among the 37-pin connector-block options for the PCI-6221 (37-pin), connected through an appropriate 37-pin cable. Select the cable and terminal variant against the exact DAQ device configuration.

  • DIN-rail installation with an in-line horizontal mounting arrangement.
  • 37 screw terminals on part number 778673-01.
  • Spring-terminal alternative under part number 778676-01.
Verified specifications

Technical data

Verified product specifications.

Back-end connection37-pin female D-SUB
MountingHorizontal DIN rail
ShieldingUnshielded
Wire size range12–30 AWG
Screw-terminal variant778673-01
Spring-terminal variant778676-01
Condition & included items

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Condition

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Included

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Compatibility

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National Instruments

Manufacturer

NI DAQ 37-pin connectivity

Device-to-terminal-block connection

CB-37FH

Horizontal DIN-rail wiring termination

Compatibility

NI lists the CB-37FH for the PCI-6221 (37-pin), with SH37F-37M and R37F-37M among the documented 37-pin cable options.

Confirm the terminal variant and device-specific cable selection before installation; connector pin count alone does not establish compatibility.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI CB-37FH Product PageProduct Page · ni.com
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CB-37FH Dimensional DrawingsDimensional Drawings And CAD Models · ni.com
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NI M Series User ManualUser Manual · docs-be.ni.com
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NI DAQ Multifunction I/O Cable and Accessory GuideTechnical resource
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Shipping, warranty & returns

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Warranty
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Returns
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Related products

Alternatives & system components

Related model
CB-37FVView product →
Related model
CB-37F-LPView product →

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Which CB-37FH part number uses screw terminals?

778673-01 is the screw-terminal version; 778676-01 is the spring-terminal version. The catalog model name alone does not identify the terminal variant.

How does the CB-37FH differ from the CB-37FV?

The CB-37FH mounts in line with the DIN rail. The CB-37FV mounts perpendicular to it.

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