Allen-Bradley 1756-TBE Deep Terminal Block Housing | ControlLogix 1756 Platform
Engineering Background
The Allen-Bradley 1756-TBE is a deep terminal block housing designed specifically for the ControlLogix 1756 I/O module platform. It provides a robust, field-wiring interface that accommodates higher conductor counts and larger wire gauges, addressing the demanding wiring density requirements of industrial control panels in process, discrete, and hybrid automation environments.
Product Positioning
Targeted at procurement engineers and system integrators who require genuine Rockwell Automation accessories for ControlLogix 1756 I/O modules, the 1756-TBE ensures compatibility, UL/CE compliance, and long-term spare-parts availability. It is the preferred choice for facilities standardized on the ControlLogix platform where wiring depth and conductor clearance are critical design constraints.
Complete Technical Specifications
| Catalog Number | 1756-TBE |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Series / Platform | ControlLogix 1756 |
| Type | Deep Terminal Block Housing |
| Compatible Modules | ControlLogix 1756 series I/O modules with removable terminal block |
| Housing Depth | Deep profile — accommodates larger wire bundles and higher conductor counts |
| Wire Gauge Range | Per Rockwell Automation specifications for 1756 RTB accessories |
| Mounting | Direct plug-in to compatible 1756 I/O module face |
| Material | UL-rated thermoplastic housing |
| Approvals | UL Listed, CE Marked (verify current certifications with Rockwell Automation) |
| Operating Temperature | 0 °C to 60 °C (32 °F to 140 °F) |
| Storage Temperature | −40 °C to 85 °C (−40 °F to 185 °F) |
| Weight | Approx. 100 g |
| Country of Origin | USA / Global Rockwell Automation supply chain |
Proven Application Environments
- Process Industries: Oil & gas, chemical, water/wastewater — where high wire counts per module are standard
- Discrete Manufacturing: Automotive assembly, packaging lines, and material handling systems using ControlLogix I/O racks
- Hybrid Automation: Food & beverage and pharmaceutical plants requiring hygienic panel layouts with organized field wiring
- Power & Utilities: Substation control and energy management systems with dense I/O wiring requirements
- OEM Machine Builders: Panel builders standardizing on 1756 platform accessories for consistent BOM management
Engineering Advantages
- Deep Housing Profile: Provides additional clearance for larger wire gauges and multi-conductor cables, reducing panel rework
- Removable Terminal Block Design: Enables module replacement without disturbing field wiring — critical for minimizing downtime in live production environments
- Platform Compatibility: Engineered to Rockwell Automation dimensional and electrical tolerances for the 1756 I/O family
- Genuine OEM Part: Ensures full warranty coverage and compatibility with Rockwell TechConnect support contracts
- Reduced Installation Time: Pre-labeled, keyed housing simplifies field wiring and commissioning
System Architecture & Signal Flow
In a ControlLogix 1756 rack, I/O modules communicate over the ControlLogix backplane to the controller (e.g., 1756-L8x series). Field devices connect to the I/O module via the removable terminal block (RTB). The 1756-TBE serves as the field-wiring interface housing — it physically houses the terminal block and provides the mechanical structure for conductor termination. Signal flow: Field Device → Field Wire → 1756-TBE Terminal Block → I/O Module → Backplane → ControlLogix Controller → EtherNet/IP Network.
The deep housing variant is selected when standard-depth RTBs cannot accommodate the wire bundle diameter, ensuring proper strain relief and conductor separation per IEC 60204-1 panel wiring standards.
Sourcing & Quality Verification
- All 1756-TBE units sourced by Konmask are procured through verified industrial distribution channels
- Each unit undergoes visual inspection and catalog number verification prior to dispatch
- Original manufacturer packaging and labeling preserved where available
- Traceability documentation available upon request for regulated industries (pharma, nuclear, defense)
- Konmask does not supply counterfeit, refurbished-as-new, or grey-market components — all stock is declared accurately
Procurement Process
- Confirm Compatibility: Verify your 1756 I/O module catalog number requires the TBE (deep) housing vs. standard TBS/TBNH variants
- Request Quote: Contact Konmask via support@konmask.com or +0086 19859288691 for volume pricing and lead time
- Place Order: Purchase directly via this listing or submit a PO for B2B accounts
- Shipping: Standard and expedited shipping available; export documentation provided for international orders
- After-Sales: Technical support available post-delivery for installation queries
Technical FAQ
Q: What is the difference between 1756-TBE and 1756-TBS?
A: The 1756-TBE is the deep housing variant, accommodating larger wire gauges and higher conductor counts. The 1756-TBS is the standard-depth housing. Selection depends on your wire gauge and bundle diameter.
Q: Is the 1756-TBE compatible with all ControlLogix 1756 I/O modules?
A: No — compatibility depends on the specific I/O module. Refer to the Rockwell Automation publication 1756-IN009 or the module’s installation instructions to confirm RTB type. Always cross-reference the module catalog number before ordering.
Q: Can the terminal block be wired before the module is installed?
A: Yes. The removable terminal block design allows pre-wiring of the 1756-TBE housing before the I/O module is inserted into the rack, enabling parallel commissioning workflows.
Q: Does Konmask provide a certificate of conformance?
A: Yes, upon request. Contact support@konmask.com with your order number and compliance requirements.
Q: What is the lead time for the 1756-TBE?
A: Lead time varies by stock availability. Contact Konmask for real-time inventory status and expedite options.
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Contact: support@konmask.com | +0086 19859288691
