AB 1756-TBNH
AB 1756-TBNH
AB 1756-TBNH
AB 1756-TBNH
AB 1756-TBNH
AB 1756-TBNH
Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail sales1@apterpower.com
  • Lifecycle status

    Active

1756-TBNH

/ 4.9
1001 reviews | Need a Specific Revision?
Allen-Bradley 1756-TBNH is a low-profile 20-position screw-clamp removable terminal block for field wiring compatible ControlLogix I/O modules.
In Stock
Ships by Wednesday, October 28
Fast Shipping Available
Get a quick price for 1756-TBNH
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for 1756-TBNH

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-TBNH
  • Product Family:
    ControlLogix
  • Product Type:
    20-Position NEMA Screw-Clamp Removable Terminal Block
  • Stock:
    1
  • Terminal Block Type:
    Removable terminal block
  • Terminal Style:
    NEMA screw clamp
  • Terminal Positions:
    20
  • Housing Profile:
    Low profile
  • Single-Wire Capacity:
    0.33–2.1 mm² / 22–14 AWG
  • Two-Wire Capacity:
    0.33–1.3 mm² / 22–16 AWG
  • Terminal Screw Torque:
    1.36 N·m
  • Conductor Requirement:
    Copper, rated 105 °C or higher
  • Maximum Insulation Diameter:
    1.2 mm
  • Recommended Screwdriver Width:
    3.2 mm
  • Operating Temperature:
    0–60 °C
  • Dimensions:
    11.7 × 3.453 × 4.179 cm
  • Weight:
    0.1 kg
  • Tariff Code:
    8536909000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Termination Module matching Installation Application
  • Low-profile 20-position removable terminal block for compatible ControlLogix I/O modules
  • NEMA screw-clamp terminals for one or two qualified copper conductors
  • Agency-certified ControlLogix field-wiring option when used as documented

1756-TBNH is an Allen-Bradley low-profile removable terminal block that provides 20 screw-clamp field connections for compatible ControlLogix I/O modules.

The RTB is mechanically keyed to the installed module and supports the documented single- or double-conductor arrangements without changing the module-side electronics.

Before installation, match the I/O module and RTB option, reproduce the keying, prepare each copper conductor correctly, and verify torque, wiring, seating, and enclosure clearance.

Availability, condition, price, and shipping time for 1756-TBNH are confirmed during quotation.

Allen-Bradley 1756-TBNH Removable Terminal Block Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Single-conductor terminals accept the documented 22–14 AWG range
  • Two-conductor terminals use the documented 22–16 AWG range
  • Copper conductors must be rated 105 °C or higher
  • The RTB must be listed for the exact ControlLogix I/O module
  • Mechanical keying prevents an incorrectly wired block from being moved to another module
  • Low-profile housing clearance must be checked against the installed enclosure and wire duct
  • Tighten 1756-TBNH terminal screws to 1.36 N·m (12 lb·in)
  • Use copper conductors rated 105 °C or higher and keep insulation within the published 1.2 mm maximum
  • Confirm RTB seating, latch engagement, mechanical keying and wiring against the matched ControlLogix I/O module diagram
  • Field wiring termination for compatible ControlLogix digital input modules
  • Field wiring termination for compatible ControlLogix digital output modules
  • Field wiring termination for compatible ControlLogix analog and specialty I/O modules
Description
1756-TBNH is an Allen-Bradley 20-position NEMA screw-clamp removable terminal block for compatible ControlLogix I/O modules.

Its low-profile housing provides field-wire termination at the front of the module and accepts one or two qualified copper conductors per terminal within the documented wire-size limits.

Before installation or replacement, confirm the I/O module catalog number, terminal-block keying, conductor count and size, strip length, screw torque, wiring diagram, and enclosure clearance.
Revisions

Revision Part #

Also known as

1756-TBNH Ser A
1756-TBNH/A, Series A, Rev A
1756-TBNH Ser B
1756-TBNH/B, Series B, Rev B
Alternative Names
1756-TBNH 1756 TBNH 1756TBNH Allen-Bradley 1756-TBNH Allen Bradley 1756-TBNH ControlLogix 1756-TBNH 1756-TBNH Series A 1756-TBNH Series B
Technical notes
Allen-Bradley 1756-TBNH uses 1.36 N·m screw torque with 105 °C copper conductors; confirm the compatible 20-position ControlLogix I/O module, RTB keying, seating and enclosure clearance.
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How can a buyer distinguish Allen-Bradley 1756-TBNH from the taller 1756-TBCH terminal block?
Confirm that the required part is the low-profile, 20-position NEMA screw-clamp RTB. Compare the installed module, enclosure clearance, terminal-block keying, and wiring layout before ordering because the two housings are not interchangeable solely on terminal count.
Is Allen-Bradley 1756-TBNH normally supplied with a ControlLogix I/O module?
Rockwell documents removable terminal blocks as separately ordered wiring components. Verify that the quotation explicitly includes 1756-TBNH; do not assume the RTB, prewired cable, or interface module is included with the I/O module.
What conductor arrangement should be confirmed before wiring Allen-Bradley 1756-TBNH?
Confirm whether each terminal will carry one conductor or two, then apply the corresponding documented wire-size range. Use copper conductors rated at least 105 °C, keep insulation within the stated diameter limit, and tighten every screw to the specified torque.
Can Allen-Bradley 1756-TBNH be replaced by a third-party field-wiring interface without affecting approvals?
Rockwell states that the ControlLogix system agency certification covers the listed ControlLogix RTBs, including 1756-TBNH. A different termination method can require application-specific approval, so certification requirements must be reviewed before changing the wiring system.
What must be checked before mating Allen-Bradley 1756-TBNH to a replacement I/O module?
Match the replacement module catalog number and its published RTB option, reproduce the original mechanical keying, check that the terminal block seats and latches fully, and verify every field conductor against the module wiring diagram before applying power.
When should Allen-Bradley 1756-TBNH be selected instead of the spring-clamp 1756-TBSH?
Select 1756-TBNH when the installed standard is a low-profile NEMA screw-clamp connection. If the cabinet uses spring-clamp maintenance practices or another housing profile, confirm the approved RTB and wire-preparation method rather than substituting by position count alone.
What should be inspected when a field channel becomes intermittent after installing Allen-Bradley 1756-TBNH?
Check that the RTB is fully seated, terminal screws are torqued correctly, stripped conductors are undamaged and inside the approved size range, no insulation is clamped under a screw, and shields or commons follow the I/O module diagram.