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Allen-Bradley 1756-TBNH ControlLogix I/O Terminal Base for industrial automation

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Allen-Bradley 1756-TBNH

by Allen-Bradley

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OverviewThe Allen-Bradley 1756-TBNH ControlLogix I/O Terminal Base is a vital component for advanced industrial automation setups. This terminal base functions as a central hub, efficiently distributing power and enabling reliable communication when integrated with ControlLogix I/O modules. Its compact design and ability to mount on a DIN rail help to maximize space and simplify installation, making it perfect for a wide range of industrial uses. Engineered for the demands of modern industrial environments, the 1756-TBNH ensures continuous connectivity between your ControlLogix controller and various I/O modules. With support for up to 8 I/O modules, it provides the flexibility needed to incorporate diverse input and output types, boosting the overall functionality and responsiveness of your automation processes.Key Features Eight-Slot Capacity: Accommodates up to 8 ControlLogix I/O modules, allowing for adaptable system expansion and configuration. Efficient Power Distribution: Reliably supplies 24V DC power to connected I/O modules, simplifying wiring and ensuring consistent functionality. DIN Rail Mounting: Facilitates rapid and straightforward installation, offering versatility in cabinet arrangement and reducing setup duration. Seamless ControlLogix Integration: Ensures robust communication with the ControlLogix backplane, guaranteeing dependable data exchange between the controller and I/O modules. Secure Spring Clamp Connectors: Provides quick, secure, and tool-free wiring connections, minimizing installation effort and improving system reliability. Compact and Space-Saving Design: Optimizes control cabinet space, essential for efficient panel layout and a reduced footprint. Industrial Certifications: UL, CE, and cUL certified, ensuring adherence to global safety and quality standards for industrial applications. Technical Specifications Model: 1756-TBNH Series: ControlLogix Type: I/O Terminal Base Compatible With: ControlLogix I/O modules Number of Slots: Supports up to 8 I/O modules Communication: Compatible with ControlLogix backplane Power Distribution: 24V DC to connected I/O modules Dimensions: 4.52 x 8.39 x 5.28 inches (114.7 x 213.8 x 134.6 mm) Weight: 1.12 kg (2.47 lbs) Mounting: DIN rail mounting Operating Temperature: 0°C to 60°C (32°F to 140°F) Certifications: UL, CE, and cUL certified Voltage Range: 24V DC input Connector Type: Spring Clamp Connectors Environmental Rating: Designed for industrial environments (dust and moisture protection) ApplicationsThis terminal base is suitable for a variety of industrial uses, including: Industrial Automation Systems: Essential for intricate automation deployments requiring multiple I/O modules, such as automated assembly lines and material handling. Machine Control: Perfect for integrating various sensors, actuators, and control devices in advanced machine control scenarios. Process Control: Ideal for process control systems, facilitating the management and communication of multiple I/O signals. Discrete Manufacturing: Boosts efficiency and dependability in discrete manufacturing processes by providing robust I/O expansion. Building Management Systems: Can be utilized in integrated building management systems for industrial facilities, managing diverse inputs and outputs. Why Choose?Selecting this model offers several distinct advantages: Unmatched Reliability: Manufactured by Allen-Bradley, a leader in industrial automation, ensuring sturdy and long-lasting performance. Ease of Integration: Specifically engineered for ControlLogix systems, ensuring effortless compatibility and simplified setup. Optimized Performance: Efficient power distribution and secure connections contribute to system stability and uptime. Space and Cost Efficiency: Its compact design and ability to support multiple modules reduce the need for additional hardware and cabinet space. Global Compliance: With UL, CE, and cUL certifications, this terminal base adheres to rigorous international safety and quality standards. Order NowUpgrade your industrial control system with the Allen-Bradley 1756-TBNH ControlLogix I/O Terminal Base.FAQWhat is the primary function of the 1756-TBNH?The 1756-TBNH serves as a central hub for power distribution and reliable communication for ControlLogix I/O modules within an industrial automation system.How many I/O modules can the 1756-TBNH support?This terminal base can accommodate up to 8 ControlLogix I/O modules.Does this terminal base simplify wiring?Yes, its efficient 24V DC power distribution to connected I/O modules streamlines wiring and ensures consistent operation, and the secure spring clamp connectors provide tool-free wiring.What are the dimensions and weight of the 1756-TBNH?The dimensions are 4.52 x 8.39 x 5.28 inches (114.7 x 213.8 x 134.6 mm) and it weighs 1.12 kg (2.47 lbs).What certifications does this product hold?It is UL, CE, and cUL certified, ensuring compliance with global safety and quality standards.

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PRODUCT DETAILS

Allen-Bradley 1756-TBNH

Overview

This is a genuine Allen-Bradley component from the ControlLogix family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem
  • Engineered to integrate inside ControlLogix installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the ControlLogix family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 1756-TBNH
  • Series: ControlLogix
  • Type: I/O Terminal Base
  • Compatible With: ControlLogix I/O modules
  • Number of Slots: Supports up to 8 I/O modules
  • Communication: Compatible with ControlLogix backplane
  • Power Distribution: 24V DC to connected I/O modules
  • Dimensions: 4.52 x 8.39 x 5.28 inches (114.7 x 213.8 x 134.6 mm)
  • Weight: 1.12 kg (2.47 lbs)
  • Mounting: DIN rail mounting
  • Operating Temperature: 0°C to 60°C (32°F to 140°F)
  • Certifications: UL, CE, and cUL certified
  • Voltage Range: 24V DC input
  • Connector Type: Spring Clamp Connectors
  • Environmental Rating: Designed for industrial environments (dust and moisture protection)

Applications

This terminal base is suitable for a variety of industrial uses, including:

  • Industrial Automation Systems: Essential for intricate automation deployments requiring multiple I/O modules, such as automated assembly lines and material handling.
  • Machine Control: Perfect for integrating various sensors, actuators, and control devices in advanced machine control scenarios.
  • Process Control: Ideal for process control systems, facilitating the management and communication of multiple I/O signals.
  • Discrete Manufacturing: Boosts efficiency and dependability in discrete manufacturing processes by providing robust I/O expansion.
  • Building Management Systems: Can be utilized in integrated building management systems for industrial facilities, managing diverse inputs and outputs.

Why Choose the 1756-TBNH?

Selecting this model offers several distinct advantages:

  • Unmatched Reliability: Manufactured by Allen-Bradley, a leader in industrial automation, ensuring sturdy and long-lasting performance.
  • Ease of Integration: Specifically engineered for ControlLogix systems, ensuring effortless compatibility and simplified setup.
  • Optimized Performance: Efficient power distribution and secure connections contribute to system stability and uptime.
  • Space and Cost Efficiency: Its compact design and ability to support multiple modules reduce the need for additional hardware and cabinet space.
  • Global Compliance: With UL, CE, and cUL certifications, this terminal base adheres to rigorous international safety and quality standards.

Availability & Shipping

  • In stock: 1756-TBNH ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 1756-TBNH ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1756-TBNH serves as a central hub for power distribution and reliable communication for ControlLogix I/O modules within an industrial automation system.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

CUSTOMER REVIEWS

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Independent Supplier Notice

PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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