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
Choosing the Right Controller: PLC vs. Motion Controller in Industrial Automation
Selecting the optimal control architecture is a foundational decision in industrial automation. Engineers must frequently choose between a Programmable Logic Controller (PLC) and a dedicated Motion Controller. While both systems manage machinery, their underlying design philosophies differ significantly, impacting performance, scalability, and system integration.
Mastering PLC Power Supply Architectures and Operating Voltages
Selecting the correct operating voltage is a critical step in designing reliable industrial automation systems. Whether you are working with a compact PLC or a large-scale DCS, your power architecture dictates the system's longevity. In this guide, we explore the standard voltage ranges and power distribution strategies required to maintain stable factory automation operations.
Optimizing Power Supply Sizing for Industrial Automation Systems
The power supply is the silent heartbeat of any industrial automation system. While engineers often prioritize processors and communication protocols, a stable power architecture remains the most critical factor for long-term reliability. In my 15 years of experience, I have found that neglecting power supply sizing often leads to ghost errors, intermittent field device failures, and costly production downtime.