Original Industrial Spare Part

Allen-Bradley 1771-A1B I/O Chassis 4-Slot PLC-5 Rack

Name: Allen-Bradley 1771-A1B 4-Slot I/O Chassis | PLC-5 Rack System
Brand: Allen-Bradley (Rockwell)
SKU: 1770-A1B
Price: 357.00 CNY
Availability: InStock

Verify the part, confirm the platform family, and move straight into quotation with the right commercial details.

SKU: 1770-A1B PLC & Industrial Automation Modules Allen-Bradley (Rockwell)

Add to Quote Email This Part Call Sales

Allen-Bradley 1771-A1B I/O Chassis 4-Slot PLC-5 Rack

RFQ Ready

Request pricing & availability

SKU1770-A1B
CategoryPLC & Industrial Automation Modules
BrandAllen-Bradley (Rockwell)
SupportAvailability, lead time, condition, and shipping coordination

How Buyers Usually Use This Page

Confirm the exact part number and platform family before sending the quote request.
Use direct email when quantity, condition, and destination are already defined internally.
Switch to the broader brand or category archive when you need alternates nearby.

Series Navigation

Move through the most common platform families behind this part.

ControlLogix 1756 PLC-5 SLC 500

Allen-Bradley 1771-A1B I/O Chassis Overview

The Allen-Bradley 1771-A1B is a compact 4-slot I/O chassis engineered for PLC-5 control systems, delivering reliable backplane communication and modular expansion capabilities. This panel-mounted chassis provides a robust foundation for integrating 1771 series I/O modules in industrial automation environments.

Technical Specifications

Model: 1771-A1B
Slot Configuration: 4 slots for 1771 series modules
Mounting Type: Panel-mounted design
Backplane: Integrated communication bus
Compatibility: PLC-5 processors and 1771 I/O modules
Weight: 3.6 kg
Origin: Made in USA

Application Scenarios

The 1771-A1B chassis excels in space-constrained installations requiring compact PLC-5 I/O expansion. Ideal applications include:

Small-scale manufacturing control panels
Remote I/O stations in distributed control systems
Retrofit projects upgrading legacy PLC-5 installations
Machine control cabinets with limited mounting space
Process monitoring systems requiring modular I/O flexibility

Solutions & Benefits

Modular Flexibility: Accommodates up to 4 I/O modules, allowing customized configurations for digital inputs, outputs, analog signals, and specialty modules.

Proven Reliability: Built to Allen-Bradley’s industrial standards, ensuring long-term operation in harsh manufacturing environments with temperature fluctuations and electrical noise.

Easy Integration: Direct compatibility with existing PLC-5 systems eliminates complex programming or adapter requirements, reducing installation time and costs.

Common Questions

Q: Is this chassis compatible with newer ControlLogix modules?
A: No, the 1771-A1B is designed exclusively for 1771 series I/O modules used with PLC-5 systems. For ControlLogix applications, consider 1756 chassis alternatives.

Q: What power supply modules work with this chassis?
A: Compatible power supplies include the 1771-P5E (24V DC) and 1771-P7 (120/220V AC). Power supply selection depends on your I/O module requirements and available facility power.

Q: Can I mix different I/O module types in the same chassis?
A: Yes, the chassis supports any combination of compatible 1771 modules, including digital, analog, and specialty modules, as long as total power consumption stays within supply limits.

Related Products

Product	Description	Link
1771-A3B	12-Slot I/O Chassis for larger PLC-5 systems	View Product
1771-P5E	24V DC Power Supply Module for PLC-5 chassis	View Product
1771-IAN	AC Input Module for 1771 chassis systems	View Product

Warranty & Support

All products from Industrial Control Hub include a comprehensive 12-month warranty covering manufacturing defects and functional failures. Our technical support team provides expert assistance for installation, configuration, and troubleshooting.