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        1756-TBCH

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        Allen-Bradley 1756-TBCH is a 36-pin screw-clamp removable terminal block with standard housing for compatible ControlLogix I/O modules.
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        Ships by Thursday, October 29
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 1756-TBCH

        • Manufacturer:
          Allen-Bradley
        • Part Number:
          1756-TBCH
        • Product Family:
          ControlLogix
        • Product Type:
          36-Pin Screw-Clamp Removable Terminal Block
        • Stock:
          1
        • Number of Positions:
          36
        • Terminal Style:
          Cage-clamp screw terminals
        • Housing:
          Standard-depth housing included
        • System Interface:
          Front-plug removable terminal block for compatible 1756 ControlLogix I/O modules
        • Single-Conductor Wire Size:
          0.33…2.1 mm² (22…14 AWG)
        • Screwdriver Width:
          3.2 mm (1/8 in.)
        • Double-Conductor Wire Size:
          0.33…1.3 mm² (22…16 AWG)
        • Double-Conductor Wire:
          Solid or stranded copper, rated 105 °C or greater; 1.2 mm insulation maximum
        • Screw Torque:
          0.5 N·m (4.4 lb·in)
        • Extended Housing Option:
          1756-TBE, ordered separately for maximum-gauge wiring or additional routing space
        • Spring-Clamp Alternative:
          1756-TBS6H, only when listed for the target I/O module
        • Dimensions:
          3.45 × 11.70 × 4.15 cm
        • Tariff Code:
          8517795000
        • 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 Compatibility Wiring Installation Application
        • 36-pin cage-clamp screw-terminal interface for compatible ControlLogix I/O modules.
        • Standard-depth housing is supplied with the removable terminal block.
        • Supports documented single- and double-conductor arrangements when permitted by the selected I/O module.

        1756-TBCH is an Allen-Bradley screw-clamp removable terminal block designed for 36-pin ControlLogix I/O module interfaces.

        It keeps plant wiring on a detachable RTB that plugs into the front of the supported module. The screw-operated cage closes around the conductor, while the housing covers and supports the completed wiring assembly.

        Before installation or replacement, verify the target module's RTB catalog-number requirement, terminal assignment, conductor arrangement, mechanical keying, housing depth, and field-power isolation.

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

        Allen-Bradley 1756-TBCH 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.

        • The target I/O module must explicitly list the 36-pin 1756-TBCH removable terminal block.
        • 1756-TBS6H is the spring-clamp alternative only for modules whose manuals list both 36-pin RTB types.
        • Safety RTBs and safety extended housings must not be used on non-safety I/O modules.
        • Insert the prepared conductor into the terminal and turn the screw clockwise to close the cage.
        • Begin wiring at the lower terminals and continue upward to keep the numbered positions accessible.
        • Secure the completed wire bundle in the housing's strain-relief area before seating the RTB.
        • Remove field-side power before connecting or disconnecting the RTB, especially in hazardous locations.
        • Set and verify the user-defined mechanical keys so the wired RTB cannot be installed on the wrong module.
        • Use the supplied standard housing unless the documented conductor size or routing space requires 1756-TBE.
        • Field wiring for compatible high-density ControlLogix digital input and output modules that specify a 36-pin RTB.
        • Voltage, current, and HART field wiring for compatible ControlLogix analog I/O modules that list 1756-TBCH.
        • Encoder, counter, and event-signal termination on supported ControlLogix specialty modules whose manuals specify 1756-TBCH.
        Description
        1756-TBCH is an Allen-Bradley 36-pin screw-clamp removable terminal block with standard housing for compatible ControlLogix I/O modules.

        The RTB plugs into the front of a supported 1756 I/O module and provides a detachable connection between plant wiring and the module. Its cage-clamp screw terminals support the conductor arrangements stated for the selected I/O module while allowing the wired RTB and housing to be removed as an assembly.

        Before installation or replacement, confirm that the target I/O module specifies a 36-pin 1756-TBCH, then verify its terminal diagram, mechanical keying, conductor count, wire preparation, tightening torque, and housing clearance. Order the 1756-TBE extended-depth housing separately when the documented conductor size or routing space requires it.
        Revisions

        Revision Part #

        Also known as

        1756-TBCH Ser A
        1756-TBCH/A, Series A, Rev A
        Get Parts Quote
        1756-TBCH Ser B
        1756-TBCH/B, Series B, Rev B
        Get Parts Quote
        Alternative Names
        1756-TBCH 1756 TBCH 1756TBCH Allen-Bradley 1756-TBCH Allen Bradley 1756-TBCH Rockwell Automation 1756-TBCH ControlLogix 1756-TBCH Allen-Bradley ControlLogix 1756-TBCH
        Technical notes
        Allen-Bradley 1756-TBCH is a 36-pin cage-clamp RTB; verify the target module's RTB requirement, terminal assignment, mechanical keying, and required housing depth before installation.
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        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.
        VIEW ALL FAQS
        How do I confirm whether 1756-TBCH fits my ControlLogix I/O module?
        Check the module's official removable-terminal-block table and wiring diagram. Use 1756-TBCH only when the module specifies the 36-pin screw/cage-clamp RTB; a 20-position module requires a different RTB family.
        Does 1756-TBCH include the ControlLogix I/O module or the 1756-TBE housing?
        No. 1756-TBCH is the removable terminal block with its standard housing. The I/O module is ordered separately, and 1756-TBE is a separate extended-depth housing option.
        Can 1756-TBCH replace 1756-TBS6H without changing the field wiring?
        Both are 36-pin RTBs used by some of the same modules, but 1756-TBCH uses screw-operated cage clamps and 1756-TBS6H uses spring clamps. Transfer and reterminate each conductor according to the target module diagram rather than treating them as a wired plug-in swap.
        When should I order 1756-TBE with 1756-TBCH?
        Order 1756-TBE when the documented maximum conductor size or the installed bend radius needs more routing depth. It replaces the standard housing; it does not replace the 1756-TBCH terminal block itself.
        May two conductors be landed on one 1756-TBCH terminal?
        The current generic RTB table permits two 0.33…1.3 mm² (22…16 AWG) copper conductors, but some I/O module instructions specify a single conductor only. The selected module's manual controls the final wiring method.
        What must be preserved when moving a wired 1756-TBCH to a replacement I/O module?
        Remove field power, confirm that the replacement module calls for 1756-TBCH, and preserve the original terminal assignments and user-defined mechanical keying. Recheck clamp tightness and seating before power is restored.
        Why can a channel remain inactive after 1756-TBCH is reseated?
        With power removed, verify that the RTB is fully seated, its locking tab is engaged, the mechanical keys align, the conductor is clamped rather than resting beside the cage, and the wire is on the correct numbered terminal. Then verify field-side power using the module manual.

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