Allen-Bradley 1756-TBSH Terminal Block, Spring, 20 Pin, Low Profile Housing, for use
$109.99
Out of stock
Request QuoteAllen-Bradley 1756-TBSH — The 1756-TBSH is an Allen-Bradley ControlLogix® 20-pin spring-clamp Removable Terminal Block (RTB) with standard housing. Plugs into the front of 1756 ControlLogix I/O modules to provide a flexible field-wiring interface; accepts 22…14 AWG single copper conductors (one per terminal). User-defined mechanical keying. Ordered separately from the I/O module.
| Description | 20-pin spring-clamp RTB, standard housing |
| Wire Size (Single Conductor) | 0.33…2.1 mm² (22…14 AWG) |
| Insulation Rating | 105 °C (221 °F) or greater |
| Max Insulation Diameter | 1.2 mm (3/64 in.) |
| Keying | User-defined mechanical |
| Use | Field wiring to 1756 ControlLogix I/O modules |
PLC Exchange is not an authorized distributor: Products ship in unopened, original manufacturer-marked packaging. See Original Packaging or Warranty for more information.
Description
Allen-Bradley 1756-TBSH
The 1756-TBSH is an Allen-Bradley ControlLogix® 20-pin spring-clamp Removable Terminal Block (RTB) with standard housing. Plugs into the front of 1756 ControlLogix I/O modules to provide a flexible field-wiring interface; accepts 22…14 AWG single copper conductors (one per terminal). User-defined mechanical keying. Ordered separately from the I/O module.
| Terminal Block Overview | |
|---|---|
| Catalog Number | 1756-TBSH |
| Product Family | ControlLogix I/O Removable Terminal Block (RTB) |
| Description | 20-pin spring-clamp RTB with standard housing |
| Housing Depth | Standard (for wiring ≤ 1.3 mm² / 16 AWG); use 1756-TBE for 2.5 mm² (14 AWG) wiring |
| Termination Type | Spring-clamp (screwdriver-actuated wire entry) |
| Keying Method | User-defined mechanical |
| Shipping | Not shipped with I/O modules — ordered separately |
| Safety Use | NOT compatible with safety I/O modules — use 1756-TBSHS for safety applications |
| Extended-Temp Variant | 1756-TBSHXT (extended-temperature operating range) |
| Wiring Specifications | |
|---|---|
| Wire Size (Single Wire per Terminal) | 0.33…2.1 mm² (22…14 AWG) |
| Conductor Type | Solid or stranded copper, rated 105 °C (221 °F) or greater |
| Max Insulation Thickness | 1.2 mm (3/64 in.) |
| Maximum Conductors per Terminal | 1 — do not wire more than one conductor on any single terminal |
| Wiring Tool | Bladed screwdriver (spring-clamp actuator); 3.2 mm (1/8 in.) reference from cage-clamp variants |
| Compatible Wiring Systems (alternatives) | |
|---|---|
| Interface Modules (IFMs) | Prewired cables + digital I/O terminal blocks; pair cables match the 1756 I/O module |
| Analog Interface Modules (AIFMs) | Prewired cables + analog output terminal blocks; pair cables match the analog I/O module |
| Ready Cables | One end RTB, other end color-coded conductors to standard terminal blocks |
| Important Application Notes | |
|---|---|
| Isolation Voltage (separate power sources) | Do not exceed the isolation voltage specified for each individual I/O module |
| Safety Module Restriction | Do not use standard 1756-TBSH with safety I/O modules — safety RTBs are marked TB_HS |
| Extended Depth Requirement | Use 1756-TBE extended-depth housing when field wiring reaches 2.5 mm² (14 AWG) |
| Certifications & Compliance | |
|---|---|
| Compatibility Document | Specified and qualified within ControlLogix I/O Modules Specifications (Pub 1756-TD002T-EN-E, Feb 2025) |
| Reference Publication | 1756-UM058 (Digital I/O) and 1756-UM009 (Analog I/O) cover module-level certifications (c-UL-us, CE, UKCA, KC, etc.) applicable to the installed module + RTB system |
| Wiring Guidelines | Follow Industrial Automation Wiring and Grounding Guidelines (1770-4.1) |
| ControlLogix 5580 / 5570 Platform Features | |
|---|---|
| Chassis Form Factor | Chassis-based modular architecture (4, 7, 10, 13, or 17 slots) |
| Controller Compatibility | ControlLogix 5580 (L8/L85E), 5570 (L7x), 5560 (L6x), 5550 (L55) |
| Network Interface | EtherNet/IP (1756-EN2TR, EN2TRK, EN3TR, EN4TR), ControlNet, DeviceNet, USB |
| Removal & Insertion Under Power (RIUP) | All 1756 modules support RIUP without removing chassis power |
| Redundancy Support | Controller / chassis redundancy via 1756-RM2/RMXT redundancy modules and dual-attached 1756-EN2TR/RXT adapters |
| Safety Support | GuardLogix 5580/5570 safety controllers; SIL 3 / PLe safety I/O via 1756-IB16S, -OB16S, -L8xS modules |
| Conformal Coating Option | "K" suffix — IPC-CC-830 Class 3 conformal coating for harsh environments |
| XT Extended Temperature | "XT" suffix — -25…+70 °C operating range for outdoor / unconditioned enclosures |
| Studio 5000 Integration | Native Add-On Profiles (AOPs) in Studio 5000 Logix Designer; Auto-discover on EtherNet/IP networks |
| Environmental Specifications | |
|---|---|
| Operating Temperature | 0…+60 °C (32…+140 °F) — standard industrial range per IEC 61131-2 |
| Storage Temperature | -40…+85 °C (-40…+185 °F) |
| Relative Humidity | 5…95% non-condensing per IEC 60068-2-30 |
| Vibration (Operating) | 2 g @ 10…500 Hz per IEC 60068-2-6 (Test Fc) |
| Shock (Operating) | 30 g per IEC 60068-2-27 (Test Ea) |
| Shock (Non-operating) | 50 g per IEC 60068-2-27 |
| ESD Immunity | 6 kV contact / 8 kV air discharge per IEC 61000-4-2 |
| Radiated RF Immunity | 10V/m, 80…6000 MHz per IEC 61000-4-3 |
| EFT / Burst Immunity | ±4 kV @ 5 kHz on power ports; ±2 kV @ 5 kHz on signal ports per IEC 61000-4-4 |
| Surge Transient Immunity | ±1 kV line-line, ±2 kV line-earth per IEC 61000-4-5 |
| Conducted RF Immunity | 10V rms, 150 kHz…80 MHz per IEC 61000-4-6 |
| Emissions | CISPR 11 Group 1 Class A; IEC 61000-6-4 (industrial environment) |
| Pollution Degree | 2 (standard industrial) |
| Enclosure Type Rating | None (open-style) — install in a suitable industrial enclosure (IP54/NEMA 12 or better) |
| Certifications & Standards | |
|---|---|
| c-UL-us (UL Listed) | UL Listed Industrial Control Equipment for US and Canada |
| c-UL-us (Hazardous Locations) | UL Listed for Class I Division 2, Group A/B/C/D (where module-certified) |
| CE Marked — EMC Directive | 2014/30/EU — EN 61326-1, EN 61000-6-2, EN 61000-6-4, EN 61131-2 |
| CE Marked — Low Voltage Directive | 2014/35/EU — EN 61131-2 (Programmable Controllers Clause 11) |
| CE Marked — RoHS Directive | 2011/65/EU — EN IEC 63000 |
| UKCA Conformity Assessment | UK Statutory Instrument 2016 No. 1091 (EMC), No. 1101 (LVD), 2012 No. 3032 (RoHS) |
| ATEX (Explosive Atmospheres) | 2014/34/EU — EN IEC 60079-0, EN IEC 60079-7 Protection "e" II 3G Ex ec IIC T4 Gc (where module-certified) |
| IECEx | IEC 60079-0, IEC 60079-7 Protection "e" II 3G Ex ec IIC T4 Gc (where module-certified) |
| RCM (Australia) | Australian Radiocommunications Act — AS/NZS CISPR 11, Industrial Emissions |
| KC (Korea) | Korean Registration of Broadcasting and Communications Equipment |
| Morocco | Arrêté ministériel n° 6404-15 |
| CCC (China) | CNCA-C23-01 Explosion-Proof Electrical Products (where applicable) |
Related Technical Topics
- Chassis Slot Population Rules — The 1756 chassis can populate all slots without reserving an empty slot adjacent to the power supply on modern (5580/5570) controllers. Legacy 5550 systems should respect the heat-dissipation spacing recommendation in 1756-IN101. Max module count = chassis size; do not span chassis with backplane-crossing modules without an 1756-EN2TR or equivalent.
- Power Supply Sizing — Total 5V DC backplane current drawn by all installed modules must not exceed the power supply rating (1756-PA72/PA75/PA75R/PB72/PB75/PB75R, etc.). Consult 1756-TD001 and each module’s datasheet for per-module current. Derate by 10% for redundant-supply applications.
- EtherNet/IP Ring (DLR) Configuration — Dual-port modules (EN2TR, EN2TRK, EN3TR, EN4TR) support Device Level Ring (DLR) topology. Configure one controller or switch as the Ring Supervisor; remaining nodes operate as participants. DLR provides single-fault tolerance with sub-3 ms recovery time.
- Firmware Revision Compatibility — When replacing a module, match the firmware revision of the replacement to the original controller’s expected FW. Studio 5000 AOPs surface firmware mismatch warnings; use ControlFLASH to upgrade a replacement module before commissioning.
Source: Module-specific specifications are compiled from Rockwell Automation Publication 1756-TD002Q-EN-P — ControlLogix 5580 / 5570 Technical Data (April 2025) together with the module’s individual product specification sheet. Platform features describe the ControlLogix 5580 / 5570 architecture; environmental specifications reflect the standard industrial operating envelope per IEC 61131-2; certifications listed are the standard Allen-Bradley marking stack — consult the module-specific datasheet for certification file numbers. All specifications verified against Rockwell Automation Publication 1756-TD002T-EN-E — ControlLogix I/O Modules Specifications Technical Data (February 2025), RTB Specifications section (page 270).
PLC Exchange products ship in their unopened, manufacturer-marked Original Packaging. Because we are not an authorized distributor, we are not legally allowed to claim these items as “New”, “Factory Sealed”, or any other term that may imply such. We have over 10 years of experience working with trusted suppliers to make sure you receive the top-quality hardware you need. Items ship in their original packaging, with the same function and contents as OEM-supplied materials. PLC Exchange is an independent supplier of industrial automation products and is not affiliated with the brand manufacturer or any of its authorized distributors. All warranties are provided directly by PLC Exchange. Trademarks, logos, and brand names referenced are property of their respective owners and are used for descriptive identification only.
Disclaimer: PLC Exchange is an independent reseller and is not an authorized distributor, affiliate, licensee, partner, or agent of Allen-Bradley / Rockwell Automation. All product information on this page is compiled from publicly-available manufacturer publications, technical data sheets, and catalog sources, each of which remains the copyright of its originating manufacturer. We make no representation or warranty, express or implied, regarding the accuracy, completeness, timeliness, or fitness for any particular purpose of the specifications or descriptions shown — content may contain errors, omissions, or out-of-date information. Product images are the property of their respective manufacturers, trademark owners, and source publications, and are displayed solely for identification purposes under the nominative fair use doctrine; images are representative and may depict a different configuration or catalog variant than the exact product listed. Purchasers should independently verify specifications against the current manufacturer publication before placing an order. All product names, trademarks, service marks, and registered trademarks are the property of their respective owners, and their use does not imply endorsement or affiliation.
Technical Notes for 1756-TBSH
- Refer to the manufacturer's installation instructions for proper mounting, wiring, and configuration.
- Ensure compatibility with your existing system architecture before ordering.
- All 1756-TBSH units sold by PLC Exchange are tested and ship in original factory packaging.
- For application-specific questions or system compatibility verification, contact PLC Exchange technical support at [email protected] or 980-202-0882.
Alternative Part Numbers & Names for 1756-TBSH
The 1756-TBSH by Allen-Bradley may also be found under the following alternative names, catalog numbers, or common search variations:
- 1756TBSH
- Allen Bradley 1756-TBSH
- Allen-Bradley 1756-TBSH
- 1756 TBSH
- 1756/TBSH
All variations refer to the same Allen-Bradley product. If you are unsure whether this is the correct part for your application, contact our team for assistance.
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 12 × 10 × 6 in |
| warranty | 2.5 Year PLC Exchange Warranty, 30 Days worry-free return from delivery |
| upc | 612598171866 |
| mpn | 1756-TBSH |
| manufacturer | Allen-Bradley |
| condition | Original Packaging |
Dimensions & Weight for 1756-TBSH
| Shipping Dimensions | |
|---|---|
| Weight | 0.5 lbs |
| Length | 12 in |
| Width | 10 in |
| Height | 6 in |
| Box Dimensions (L×W×H) | 12 × 10 × 6 in |
Dimensions shown are for the shipping package. For module-level mechanical dimensions, refer to the manufacturer datasheet.
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Frequently Asked Questions
Where can I find the technical datasheet for the 1756-TBSH?
The official manufacturer datasheet is available for download on the 1756-TBSH product page at PLC Exchange. Look for the Tech Data PDF link in the product description.
Does the 1756-TBSH include a warranty?
Yes. Every 1756-TBSH sold by PLC Exchange includes a 2.5-year warranty (30 months, full replacement). Details: https://plcexchange.net/warranty-information/
What is the return policy for the 1756-TBSH?
PLC Exchange offers a 30-day worry-free return policy. Eligibility and details: https://plcexchange.net/return-policy/
When will my 1756-TBSH ship?
In-stock orders placed before 4 PM ET ship the same business day via free UPS Ground. Expedited options (Next Day Air, 2nd Day Air) are available at checkout.
Who manufactures the 1756-TBSH?
The 1756-TBSH is manufactured by Allen-Bradley. PLC Exchange is an independent reseller specializing in Allen-Bradley industrial automation products.
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