Allen-Bradley 1756-A4 | 4-Slot ControlLogix Chassis

Product Overview

The Allen-Bradley 1756-A4 is a ControlLogix chassis that provides four slots for processors, I/O modules, and communication adapters. It integrates a high-speed backplane that distributes both power and data to every installed module, ensuring reliable performance in industrial automation systems.

Key Features

• Catalog Number: 1756-A4

• Series: ControlLogix

• Slot Capacity: Four (4)

• Power Dissipation: 4W maximum

• Mounting Orientation: Horizontal panel installation

• Enclosure Type: Open frame design

• Weight: 1.7 lbs (0.75 kg)

• Dimensions: 20 x 20 x 8 in (50.8 x 50.8 x 20.3 cm)

Technical Specifications

Performance Advantages

The 1756-A4 chassis provides a RIUP (Removal and Insertion Under Power) feature, allowing quick maintenance without system downtime. Its electronic keying system ensures module compatibility and prevents incorrect replacements. The durable open enclosure design makes it suitable for diverse industrial environments, while the high backplane current capacity supports multiple module types simultaneously.

Application Benefits

By supporting processors, I/O modules, specialty modules, and partner devices, the 1756-A4 acts as a central housing unit for scalable control solutions. It delivers long-term reliability with wide electrical ratings and efficient power distribution, making it ideal for industrial automation systems that demand stability and expandability.