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Allen-Bradley 1771-A3B I/O Chassis

Allen-Bradley 1771-A3B I/O Chassis

  • Manufacturer: Allen-Bradley

  • Product No.: 1771-A3B

  • Condition:1000 in stock

  • Product Type: I/O Chassis

  • Product Origin: USA

  • Payment: T/T, Western Union

  • Weight: 8700g

  • Shipping port: Xiamen

  • Warranty: 12 months

  • 24/7 Support
  • 30-Day Returns
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Allen-Bradley 1771-A3B I/O Chassis

The Allen-Bradley 1771-A3B is a 12-slot I/O chassis designed to house 1771 series I/O modules for PLC-5 systems. It provides reliable communication and power distribution for connected modules.


Technical Specifications

Chassis & Module Compatibility

Attribute Specification
Module Compatibility 1771 I/O Modules
Number of Slots 12
Mounting Options 19-inch rack mount or back-panel mount
Dimensions (H x W x D) 339 x 484 x 217 mm (13.53 x 19.0 x 8.5 in)
Weight 8.7 kg (19.1 lb)

Communication & Power

Attribute Specification
Module Location 1771 I/O chassis, leftmost slot
Chassis Distance 2500 ft @ 230.4K Baud
5000 ft @ 115.2K Baud
10,000 ft @ 57.6K Baud
Interconnect Cable 1770-CD
Power Dissipation 5 Watts
Thermal Dissipation 17.06 BTU/hr
Backplane Current 1.0A @ 5V
Keying Upper Connector: Between 54 and 56
Lower Connector: Between 16 and 18

Environmental Conditions

Attribute Specification
Operating Temperature 0 to 60°C (32 to 140°F)
Storage Temperature -40 to 85°C (-40 to 185°F)
Relative Humidity 5% to 95% (non-condensing)

Field Wiring & Certification

Attribute Specification
Field Wiring Arm Cat. No. 1771-WB
Field Wiring Arm Screw Torque 7-9 pound-inches
Conductor Size 20 AWG (0.5mm²) stranded copper, 1 wire per terminal
Remote I/O Cable Blue cable (user-supplied)
Rack Restart Switch 8252-A-B Part No. 740018-2315052-A-B Cat. No. 1770-XT
Termination Resistor 20 AWG (0.5mm²) with 3/64" (1.2mm) insulation max
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Product Description

Allen-Bradley 1771-A3B I/O Chassis

The Allen-Bradley 1771-A3B is a 12-slot I/O chassis designed to house 1771 series I/O modules for PLC-5 systems. It provides reliable communication and power distribution for connected modules.


Technical Specifications

Chassis & Module Compatibility

Attribute Specification
Module Compatibility 1771 I/O Modules
Number of Slots 12
Mounting Options 19-inch rack mount or back-panel mount
Dimensions (H x W x D) 339 x 484 x 217 mm (13.53 x 19.0 x 8.5 in)
Weight 8.7 kg (19.1 lb)

Communication & Power

Attribute Specification
Module Location 1771 I/O chassis, leftmost slot
Chassis Distance 2500 ft @ 230.4K Baud
5000 ft @ 115.2K Baud
10,000 ft @ 57.6K Baud
Interconnect Cable 1770-CD
Power Dissipation 5 Watts
Thermal Dissipation 17.06 BTU/hr
Backplane Current 1.0A @ 5V
Keying Upper Connector: Between 54 and 56
Lower Connector: Between 16 and 18

Environmental Conditions

Attribute Specification
Operating Temperature 0 to 60°C (32 to 140°F)
Storage Temperature -40 to 85°C (-40 to 185°F)
Relative Humidity 5% to 95% (non-condensing)

Field Wiring & Certification

Attribute Specification
Field Wiring Arm Cat. No. 1771-WB
Field Wiring Arm Screw Torque 7-9 pound-inches
Conductor Size 20 AWG (0.5mm²) stranded copper, 1 wire per terminal
Remote I/O Cable Blue cable (user-supplied)
Rack Restart Switch 8252-A-B Part No. 740018-2315052-A-B Cat. No. 1770-XT
Termination Resistor 20 AWG (0.5mm²) with 3/64" (1.2mm) insulation max

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