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
Preventing Emergency Stop Spurious Trips in Industrial Control Systems
Emergency Stop pushbuttons use Normally Closed contacts for fail-safe safety, but mechanical wear can cause costly spurious trips. This technical guide examines E-Stop contact failure root causes, redundant hardware setups, PLC logic monitoring, and maintenance strategies to maximize plant availability.
Why 24V DC Is the Universal Standard for Industrial Automation Power Supplies
Industrial manufacturing requires continuous uptime to prevent equipment damage. Unlike AC power, 24V DC circuits seamlessly integrate with UPS units and battery banks. During main grid failures, a 24V DC backup system instantly maintains PLC memory, instrument loops, and critical safety valves without interruption.
Site Acceptance Testing (SAT) for PLC Control Systems: An Engineering Execution Guide
The Site Acceptance Test (SAT) represents the definitive handover stage in industrial automation projects. While the Factory Acceptance Test confirms cabinet hardware assembly off-site, the SAT validates real-world performance under live site conditions. Consequently, a structured execution strategy prevents equipment damage and guarantees seamless integration into plant operations.