Product Details
Overview
The Allen-Bradley 1771-A3B1 is a universal I/O chassis engineered for industrial automation and control systems. With support for up to 12 I/O modules, this chassis offers a scalable and reliable foundation for PLC-5 and distributed control networks. Its open-style, panel-mounted design simplifies wiring access and integration in control panels.
Key Features
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Module Capacity: Accommodates 12 I/O modules for flexible configuration
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Mounting Type: Designed for panel-mount installations
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Electrical Rating: Maximum backplane current of 24 A at 5 V DC
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Durability: Withstands operating shock of 15 g and non-operating shock of 30 g
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Vibration Resistance: Rated at 2 g for frequencies between 10–500 Hz
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Open Chassis Design: Facilitates easy module installation and maintenance
Technical Specifications
Manufacturer: Rockwell Automation
Brand: Allen-Bradley
Part Number: 1771-A3B1
Module Type: Universal I/O Chassis
Number of I/O Slots: 12
Mount Type: Panel Mount
Enclosure Type: Open Style
Electrical & Environmental
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Maximum Backplane Current: 24 A @ 5 V DC
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Operating Temperature: 0–60°C (32–140°F)
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Relative Humidity: 5–95%, non-condensing
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Vibration: 2 g (10–500 Hz)
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Operating Shock: 15 g
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Non-Operating Shock: 30 g
Physical Dimensions & Weight
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Dimensions: 483 × 339 × 221 mm (19 × 12.4 × 7.6 in)
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Weight: 5.9 kg (13 lbs)
Applications
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PLC-5 series and distributed control systems
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Large-scale industrial automation requiring multiple I/O modules
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Manufacturing process control
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
Understanding Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.