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Allen-Bradley 1771-A3B 12-Slot I/O Chassis for PLC-5 Systems

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Allen-Bradley 1771-A3B

by Allen-Bradley

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OverviewUpgrade your industrial control setup with the Allen-Bradley 1771-A3B, a meticulously crafted 12-slot I/O module chassis. This vital component is engineered for flawless integration into your PLC-5 control systems, establishing a robust and dependable base for your 1771-series I/O modules. The 1771-A3B is key to centralizing power delivery and ensuring superb connectivity, thereby enabling consistent and effective communication between your PLC-5 processors and crucial input/output modules. Designed for flexibility, the 1771-A3B offers both standard 19-inch rack mounting and convenient back-panel mounting choices. This adaptability guarantees the chassis can be effortlessly incorporated into a wide array of industrial settings and uses, optimizing both space and accessibility. As a Series B chassis, this unit represents an improved version, providing enhanced performance, greater longevity, and unparalleled integration within current Rockwell Automation environments. It's the perfect selection for demanding industrial applications where dependability and efficiency are paramount.Key Features 12-Slot I/O Capacity: Provides substantial room for incorporating multiple Allen-Bradley 1771 I/O modules, allowing for extensive system expansion and personalization. Optimized for PLC-5 Systems: Specifically designed to ensure peak compatibility and smooth operational synergy with your existing PLC-5 control systems. Flexible Mounting Options: Offers both 19-inch rack mount and back-panel mount capabilities, providing installation versatility to suit diverse industrial configurations and spatial needs. Enhanced Series B Reliability: Incorporates Series B improvements for superior performance, increased operational stability, and an extended service life in challenging industrial automation settings. Centralized Power Distribution: Efficiently supplies power to all installed I/O modules, ensuring consistent operation and simplifying wiring intricacies within your control panel. Durable Industrial Construction: Manufactured with robust materials and design principles to endure harsh industrial conditions, guaranteeing long-term operational integrity and reliability. Technical Specifications Model: 1771-A3B Series: B Number of Slots: 12 Mounting Options: 19-inch rack mount or back-panel mount Compatibility: Allen-Bradley 1771 I/O modules and PLC-5 systems Power Distribution: Centralized within the chassis Certifications: UL, CE, RoHS compliant for global industrial standards Applications Industrial Automation & Process Control: Provides stable and secure housing for essential I/O modules, ensuring precise control and monitoring in complex industrial processes. Factory Equipment & Manufacturing: Supports a broad range of automation components, boosting the efficiency and reliability of production lines and factory machinery. SCADA & Distributed Control Systems (DCS): Facilitates smooth data processing and communication within large-scale supervisory control and data acquisition environments. Energy & Power Management: Crucial for efficient module integration in systems designed for energy oversight, distribution, and overall power regulation. Water and Wastewater Treatment: Offers dependable infrastructure for supervising and monitoring various processes in municipal and industrial treatment facilities. Material Handling Systems: Provides the necessary support for I/O modules in automated conveyor systems, robotics, and other material movement applications. Why ChooseUnmatched Reliability: The Series B advancements, coupled with Allen-Bradley's reputation, ensure a chassis that consistently performs under rigorous industrial demands, minimizing downtime and maximizing output.Seamless Integration: Specifically engineered for PLC-5 systems, the 1771-A3B guarantees effortless compatibility and smooth integration with your current Rockwell Automation infrastructure.Order NowReady to enhance your industrial control system? Purchase the Allen-Bradley 1771-A3B today and experience superior performance and reliability.FAQWhat is the primary function of the Allen-Bradley 1771-A3B?The 1771-A3B serves as a 12-slot I/O chassis assembly designed to seamlessly integrate 1771-series I/O modules with your PLC-5 control system, facilitating centralized power distribution and robust communication.What are the mounting options available for this chassis?This chassis offers flexible installation with options for both 19-inch rack mounting and convenient back-panel mounting to suit various industrial environments.Is the 1771-A3B compatible with existing PLC-5 systems?Yes, the 1771-A3B is specifically engineered for maximum compatibility and operational synergy with existing Allen-Bradley PLC-5 control systems.What does "Series B" signify for this product?The "Series B" designation indicates an enhanced iteration of the chassis, offering superior performance, increased durability, and improved integration capabilities within Rockwell Automation ecosystems.What types of applications benefit from using the 1771-A3B?The 1771-A3B is suitable for a wide range of applications including industrial automation, process control, factory equipment, manufacturing, SCADA, DCS, energy management, water treatment, and material handling systems.

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PRODUCT DETAILS

Allen-Bradley 1771-A3B

Overview

This is a genuine Allen-Bradley component from the PLC-5 Platform (Legacy) 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 PLC-5 Platform (Legacy) 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 PLC-5 Platform (Legacy) family

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

Technical Specifications

  • Model: 1771-A3B
  • Series: B
  • Number of Slots: 12
  • Mounting Options: 19-inch rack mount or back-panel mount
  • Compatibility: Allen-Bradley 1771 I/O modules and PLC-5 systems
  • Power Distribution: Centralized within the chassis
  • Certifications: UL, CE, RoHS compliant for global industrial standards

Applications

  • Industrial Automation & Process Control: Provides stable and secure housing for essential I/O modules, ensuring precise control and monitoring in complex industrial processes.
  • Factory Equipment & Manufacturing: Supports a broad range of automation components, boosting the efficiency and reliability of production lines and factory machinery.
  • SCADA & Distributed Control Systems (DCS): Facilitates smooth data processing and communication within large-scale supervisory control and data acquisition environments.
  • Energy & Power Management: Crucial for efficient module integration in systems designed for energy oversight, distribution, and overall power regulation.
  • Water and Wastewater Treatment: Offers dependable infrastructure for supervising and monitoring various processes in municipal and industrial treatment facilities.
  • Material Handling Systems: Provides the necessary support for I/O modules in automated conveyor systems, robotics, and other material movement applications.

Why Choose the 1771-A3B?

Unmatched Reliability: The Series B advancements, coupled with Allen-Bradley's reputation, ensure a chassis that consistently performs under rigorous industrial demands, minimizing downtime and maximizing output.

Seamless Integration: Specifically engineered for PLC-5 systems, the 1771-A3B guarantees effortless compatibility and smooth integration with your current Rockwell Automation infrastructure.

Availability & Shipping

  • In stock: 1771-A3B 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 1771-A3B ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1771-A3B serves as a 12-slot I/O chassis assembly designed to seamlessly integrate 1771-series I/O modules with your PLC-5 control system, facilitating centralized power distribution and robust communication.

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.

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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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