1771-A3B
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Shipping & Delivery
Shipping & Delivery
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Product Conditions
Product Conditions
Surplus: Surplus units show no signs of installation or having been used previously. These units are in the original packaging, which may have been opened.
Used: Used units have been previously used and are inspected, cleaned and tested.
All units come with a 1 Year Replace Industrial Warranty.
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Tax & Exemptions
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Product Conditions
Replace Industrial, LLC is not affiliated with any of the manufacturers listed on this website. All products are sourced & verified through the industrial surplus market and through other independent supply chains. We do not convey any manufacturer warranty with the product. Each product sold comes with a 2 Year Replace Industrial Warranty, unless specified otherwise. This warranty conveys solely through Replace Industrial, LLC. and is completely unaffiliated with any manufacturer warranty. The terms of our warranty can be found here.
Surplus: This unit is sourced through the industrial market outside of the manufacturer and has been independently verified to not have been used operationally previously. These units are in the original packaging, but the packaging & unit may show signs of shelf wear.
Used: This unit may have been previously used and show signs of wear. The unit has been independently verified and is guaranteed with a 1 Year Replace Automation Warranty. The unit has been sourced through independent supply chains in the industrial markets.
Firmware: Replace Industrial, LLC sells hardware only and does not sell firmware and makes no representation as to what firmware may or may not be present on the hardware. We do not obtain or provide software for customers.
Allen-Bradley 1771-A3B
The Allen-Bradley 1771-A3B is a 12-slot I/O chassis assembly engineered for PLC-5 systems and 1771 series I/O modules. Designed with flexibility in mind, it supports both 19-inch rack mount and back-panel mount installations, making it suitable for a wide range of industrial control environments. This chassis enables seamless backplane communication between I/O modules and the PLC-5 processor, ensuring reliable system integration. With durable construction and modular expansion capabilities, the 1771-A3B provides a stable foundation for medium-sized automation systems using Allen-Bradley's proven 1771 I/O architecture.
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Part Number | 1771-A3B |
| Product Type | I/O Chassis Assembly |
| Series | PLC-5 / 1771 |
| Number of Slots | 12 |
| Mounting Options | 19-inch Rack Mount or Back-Panel Mount |
| Compatible Modules | 1771 I/O Modules, PLC‑5 Processors |
| Backplane Communication | 1771 Series |
| Status | Discontinued by Manufacturer |
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