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Allen-Bradley 1771-A4B I/O chassis, 16-slot, for PLC-5 systems, panel mount, 1771 series modules

Allen-Bradley 1771-A4B

SKU: 1771-A4B
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$1,210.00
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Allen-Bradley 1771-A4B

Overview

The Allen-Bradley 1771-A4B is a 16-slot I/O chassis for use in PLC-5 systems. It provides a backplane for mounting up to 16 I/O, communication, or processor modules from the 1771 series. Designed for use with both AC and DC power supplies, this chassis is essential for flexible and scalable industrial control system configurations.

Key Features

  • 16-slot backplane for Allen-Bradley 1771 series modules

  • Supports PLC-5 processors and I/O modules

  • Compatible with 120/220V AC or DC power via external power supply (e.g., 1771-P7, P4S, etc.)

  • Horizontal or vertical mounting for flexible panel layouts

  • Robust design for industrial environments

  • Includes chassis grounding and backplane communication features

  • Can be used in local, remote, or distributed I/O systems

Technical Specifications

  • Catalog Number: 1771-A4B

  • Series: PLC-5 / 1771

  • Number of Slots: 16

  • Backplane Current: 8A maximum

  • Compatible Power Supplies: 1771-P4S, P5E, P6S, P7, etc.

  • Mounting: Panel mount (horizontal or vertical)

  • Dimensions (W x H x D): Approx. 20.5 x 5.4 x 7.6 in (521 x 137 x 193 mm)

  • Weight: Approx. 6.4 lbs (2.9 kg)

  • Operating Temperature: 0°C to 60°C (32°F to 140°F)

  • Certifications: UL, CE, CSA

Applications

  • Legacy Allen-Bradley PLC-5 control systems

  • Industrial automation panels

  • OEM machine control systems

  • Distributed or remote I/O networks

  • Replacement chassis in modernization projects

Why Choose the 1771-A4B

  • Provides high-density I/O support with 16 slots

  • Compatible with a broad range of 1771 modules

  • Flexible power and mounting options

  • Reliable operation in demanding industrial environments

Order Now

The Allen-Bradley 1771-A4B I/O chassis is in stock and available for global shipping. 

New & Genuine Products – Factory Sealed At PLCpartssolution, all our products are 100% new, genuine, and come in original factory-sealed packaging. We guarantee authentic components that meet the highest industry standards for performance and reliability.
1-Year Warranty Included All new products sold by PLCpartssolution come with a 1-year warranty. We stand behind the quality and reliability of our parts, ensuring coverage against manufacturing defects under normal operating conditions.
Disclaimer: PLCpartssolution is an independent supplier of surplus and refurbished industrial automation products. We are not an authorized distributor, reseller, or representative of the brands listed on this website. All trademarks, brand names, and logos are the property of their respective owners. PLCpartssolution is not affiliated with, endorsed by, or approved by ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other manufacturers mentioned.

Description

Allen-Bradley 1771-A4B

Overview

The Allen-Bradley 1771-A4B is a 16-slot I/O chassis for use in PLC-5 systems. It provides a backplane for mounting up to 16 I/O, communication, or processor modules from the 1771 series. Designed for use with both AC and DC power supplies, this chassis is essential for flexible and scalable industrial control system configurations.

Key Features

  • 16-slot backplane for Allen-Bradley 1771 series modules

  • Supports PLC-5 processors and I/O modules

  • Compatible with 120/220V AC or DC power via external power supply (e.g., 1771-P7, P4S, etc.)

  • Horizontal or vertical mounting for flexible panel layouts

  • Robust design for industrial environments

  • Includes chassis grounding and backplane communication features

  • Can be used in local, remote, or distributed I/O systems

Technical Specifications

  • Catalog Number: 1771-A4B

  • Series: PLC-5 / 1771

  • Number of Slots: 16

  • Backplane Current: 8A maximum

  • Compatible Power Supplies: 1771-P4S, P5E, P6S, P7, etc.

  • Mounting: Panel mount (horizontal or vertical)

  • Dimensions (W x H x D): Approx. 20.5 x 5.4 x 7.6 in (521 x 137 x 193 mm)

  • Weight: Approx. 6.4 lbs (2.9 kg)

  • Operating Temperature: 0°C to 60°C (32°F to 140°F)

  • Certifications: UL, CE, CSA

Applications

  • Legacy Allen-Bradley PLC-5 control systems

  • Industrial automation panels

  • OEM machine control systems

  • Distributed or remote I/O networks

  • Replacement chassis in modernization projects

Why Choose the 1771-A4B

  • Provides high-density I/O support with 16 slots

  • Compatible with a broad range of 1771 modules

  • Flexible power and mounting options

  • Reliable operation in demanding industrial environments

Order Now

The Allen-Bradley 1771-A4B I/O chassis is in stock and available for global shipping. 

Condition

New & Genuine Products – Factory Sealed At PLCpartssolution, all our products are 100% new, genuine, and come in original factory-sealed packaging. We guarantee authentic components that meet the highest industry standards for performance and reliability.

Warranty

1-Year Warranty Included All new products sold by PLCpartssolution come with a 1-year warranty. We stand behind the quality and reliability of our parts, ensuring coverage against manufacturing defects under normal operating conditions.

Disclaimer

Disclaimer: PLCpartssolution is an independent supplier of surplus and refurbished industrial automation products. We are not an authorized distributor, reseller, or representative of the brands listed on this website. All trademarks, brand names, and logos are the property of their respective owners. PLCpartssolution is not affiliated with, endorsed by, or approved by ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other manufacturers mentioned.
Allen-Bradley 1771-A4B

Allen-Bradley 1771-A4B

$1,210.00
Add to wishlist
Allen-Bradley 1771-A4B

Allen-Bradley 1771-A4B

Your Price:
$1,210.00
Item Added to Your Cart
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