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Allen-Bradley 1771-A4B PLC-5 16-Slot I/O Chassis Backplane Rack

SKU: NO100853
Model: 1771-A4B
Product Condition: New - Open Box
$950.00

Allen-Bradley 1771-A4B PLC-5 16-slot I/O chassis provides a backplane for mounting 1771 I/O modules, distributing 5V DC power, and supporting industrial PLC-5 control system expansion.

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Estimated delivery: 3 days
One year warranty
Free return within 30 days of purchase.
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Allen Bradley Programmable Logic Controllers (PLCs) Automation
Product Description

Allen-Bradley 1771-A4B PLC-5 16-Slot I/O Chassis for Modular Control Systems

The Allen-Bradley 1771-A4B is a PLC-5 I/O chassis designed to house and interconnect 1771-series I/O modules. Featuring sixteen backplane slots, it distributes regulated 5V DC power and supports field wiring arms for modular industrial control architectures.

Integrated 16-Slot Backplane Architecture

  • Sixteen I/O module slots for 1771-series modules
  • 24 A maximum backplane current at 5 V DC
  • Back-panel mounting for industrial control enclosures
  • Open-style enclosure for system integration

Industrial Mechanical and Electrical Design

The 1771-A4B chassis is engineered to withstand industrial vibration and shock while maintaining reliable electrical distribution. Its backplane design supports consistent power delivery across all installed modules without additional internal wiring.

Supported Applications

  • PLC-5 based industrial automation systems
  • Discrete and analog I/O expansion assemblies
  • Centralized control cabinets using 1771 I/O modules
Specifications
Specifications
MPN 1771-A4B
Product Condition New - Open Box
Shipping Length (in.) 24
Shipping Width (In.) 8
Shipping Height (In.) 13
Item Returns This item can be returned
Brand Allen-Bradley
Manufacturer Rockwell Automation
Catalog Number 1771-A4B
Product Line PLC-5 / 1771 I/O
Product Type PLC I/O Chassis Backplane
Chassis Configuration Universal I/O Chassis
Number of I/O Slots 16 Slots
Supported Module Series Allen-Bradley 1771 I/O Modules
Backplane Voltage 5 V DC
Maximum Backplane Current 24 A
Power Supply Compatibility Processor-integrated power supplies, 1771 power supply modules, or external power supplies (single power source only)
Mounting Method Back Panel Mount
Enclosure Type Open Style
Installation Location Stand-Alone
Operating Temperature 32 to 140 °F (0 to 60 °C)
Storage Temperature -40 to 185 °F (-40 to 85 °C)
Relative Humidity 5–95% Non-Condensing
Operating Shock 15 g
Non-Operating Shock 30 g
Vibration Rating 2 g at 10–500 Hz
Dimensions (L × W × H) 24.0 × 7.6 × 12.4 in
Weight 14.8 lbs
What's in the box?
  • 1 x Allen-Bradley 1771-A4B PLC-5 16-Slot I/O Chassis Backplane
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