1771-A3B1

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Overview of Allen-Bradley 1771-A3B1 Universal I/O Chassis

The Allen-Bradley 1771-A3B1 is a 12-slot universal I/O chassis designed for use with 1771 I/O modules within the PLC-5 family. This chassis provides module connectivity via a backplane that supports communication between the I/O modules and the processor or I/O adapter. It is intended for panel mounting only and has a maximum backplane current capacity of 24 Amperes.

Key Features of 1771-A3B1

  • 12 available I/O slots for universal modules.
  • Backplane supplies a maximum current of 24 Amperes at 5 V DC.
  • Panel mount type with mounting tabs designed for installation on back panels.
  • Compatible with a wide range of 1771 I/O modules and specialty modules.
  • Open style enclosure, suitable for industrial environments.
  • Operating temperature range: 0 to 60 °C (32 to 140 °F).
  • Weight approximately 5.9 kg (13 lbs).
  • Designed for harsh industrial environments with shock resistance of 15 g and vibration resistance of 2 g (10-500 Hz).
  • Relative humidity tolerance: 5-95% non-condensing.

Technical Specifications

Specification Details
Number of Slots 12 (universal I/O modules)
Backplane Current Capacity 24 A at 5 V DC
Mounting Type Panel mount only
Physical Dimensions 483 x 339 x 221 mm (19.0 x 12.4 x 7.6 in)
Weight 5.9 kg (13 lbs)
Operating Temperature 0 to 60 °C (32 to 140 °F)
Operating Shock 15 g
Vibration 2 g at 10-500 Hz
Humidity 5-95% non-condensing
Enclosure Style Open style

Applications / Use Cases

The 1771-A3B1 universal chassis is an essential infrastructure component in the Allen-Bradley PLC-5 systems. It is used in industrial automation applications for housing I/O modules to handle analog, digital, and specialty signals, supporting process control, factory automation, and other control system environments requiring modular I/O expansion.

1771-A3B1

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Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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