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Allen-Bradley 1771-A1B I/O Chassis

Allen-Bradley 1771-A1B I/O Chassis

  • Manufacturer: Allen-Bradley

  • Product No.: 1770-A1B

  • Condition:1000 in stock

  • Product Type: I/O Chassis

  • Product Origin: USA

  • Payment: T/T, Western Union

  • Weight: 3600g

  • Shipping port: Xiamen

  • Warranty: 12 months

  • 24/7 Support
  • 30-Day Returns
  • Fast Shipping

Allen-Bradley 1771-A1B I/O Chassis

The Allen-Bradley 1771-A1B is a panel-mounted I/O chassis designed to house PLC-5 I/O modules. It provides a reliable backplane for communication and power distribution between modules in Allen-Bradley 1771 series control systems.


Technical Specifications

Mechanical & Electrical Characteristics

Attribute Specification
Mounting Type Panel
Dimensions (W x H x D) 229 x 315 x 193 mm (9.0 x 12.4 x 7.6 inches)
Weight (without modules) 3.6 kg (8 lbs)
I/O Module Slots 4
Maximum Backplane Current @ 5V DC 16A
Compatible Replacement for Chassis Series A (1771-A1B)
Supersedes 1771-A1

Environmental Specifications

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)
Shock (Operating/Non-operating) IEC 60068-2-27 (15930g)
Vibration IEC 60068-2-6 (2g @ 10-500Hz)
Enclosure Type Open-style

Electromagnetic Compatibility (EMC) & Immunity

Standard Specification
Emissions CISPR 11 Group 1, Class A
ESD Immunity IEC 61000-4-2 (4 kV Indirect Discharges)
Radiated RF Immunity IEC 61000-4-3 (10 V/m with 1 kHz sine-wave 80% AM from 30 MHz to 1000 MHz)

Certifications & Compliance

  • UL Listed (Industrial Control Equipment)
  • CSA Certified (Process Control Equipment for Class I, Division 2, Groups A, B, C, D Hazardous Locations)
  • European Union Compliance:
    • EMC Directive 89/336/EEC (EN 50081-2 Industrial Emissions, EN 50082-2 Industrial Immunity)
    • LVD Directive 73/23/EEC (EN 61131-2 Programmable Controllers)
  • C-Tick (Australia/NZ Compliance) – AS/NZS 2064 (Industrial Emissions)
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Product Description

Allen-Bradley 1771-A1B I/O Chassis

The Allen-Bradley 1771-A1B is a panel-mounted I/O chassis designed to house PLC-5 I/O modules. It provides a reliable backplane for communication and power distribution between modules in Allen-Bradley 1771 series control systems.


Technical Specifications

Mechanical & Electrical Characteristics

Attribute Specification
Mounting Type Panel
Dimensions (W x H x D) 229 x 315 x 193 mm (9.0 x 12.4 x 7.6 inches)
Weight (without modules) 3.6 kg (8 lbs)
I/O Module Slots 4
Maximum Backplane Current @ 5V DC 16A
Compatible Replacement for Chassis Series A (1771-A1B)
Supersedes 1771-A1

Environmental Specifications

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)
Shock (Operating/Non-operating) IEC 60068-2-27 (15930g)
Vibration IEC 60068-2-6 (2g @ 10-500Hz)
Enclosure Type Open-style

Electromagnetic Compatibility (EMC) & Immunity

Standard Specification
Emissions CISPR 11 Group 1, Class A
ESD Immunity IEC 61000-4-2 (4 kV Indirect Discharges)
Radiated RF Immunity IEC 61000-4-3 (10 V/m with 1 kHz sine-wave 80% AM from 30 MHz to 1000 MHz)

Certifications & Compliance

  • UL Listed (Industrial Control Equipment)
  • CSA Certified (Process Control Equipment for Class I, Division 2, Groups A, B, C, D Hazardous Locations)
  • European Union Compliance:
    • EMC Directive 89/336/EEC (EN 50081-2 Industrial Emissions, EN 50082-2 Industrial Immunity)
    • LVD Directive 73/23/EEC (EN 61131-2 Programmable Controllers)
  • C-Tick (Australia/NZ Compliance) – AS/NZS 2064 (Industrial Emissions)

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