Allen-Bradley 1756-A4 ControlLogix 4-Slot Backplane Chassis
Manufacturer: Allen Bradley
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Part Number: 1756-A4
Condition：New with Original Package
Product Type: 4-Slot Backplane Chassis
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1756-A4 ControlLogix 4-Slot Backplane Chassis
Product Overview
The Allen-Bradley 1756-A4 is a high-performance ControlLogix® chassis designed to provide the physical and electrical framework for modular industrial control systems. This 4-slot backplane is specifically engineered for compact automation applications where space-saving is a priority without compromising communication speed or system reliability.
Acting as the central communication bus, the 1756-A4 enables high-speed data exchange between ControlLogix processors, I/O modules, and network bridges. Its rugged, open-style design supports Removal and Insertion Under Power (RIUP), allowing for modular maintenance while the system remains operational. Whether used for a small standalone machine or as a remote I/O node in a distributed architecture, the 1756-A4 provides the deterministic performance required for modern industrial environments.
Technical Specifications
Detailed hardware parameters and backplane electrical ratings for the 1756-A4:
| Parameter | Specification Details |
| Model Number | 1756-A4 |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Type | ControlLogix Chassis (Standard) |
| Number of Slots | 4 Slots |
| Mounting Orientation | Horizontal Only (Panel Mount) |
| Backplane Current (1.2V DC) | 1.5 A |
| Backplane Current (3.3V DC) | 4.0 A Total / 4.0 A per Slot |
| Backplane Current (5.1V DC) | 15 A Total / 6 A per Slot |
| Backplane Current (24V DC) | 2.8 A Total / 2.8 A per Slot |
| Power Dissipation (Max) | 4 Watts |
| Dimensions (WxHxD) | 262 x 169 x 145 mm (10.32 x 6.65 x 5.71 in) |
| Operating Temperature | 0 °C to +60 °C (32 °F to 140 °F) |
| Cabinet Size (Min) | 508 x 508 x 203 mm (20 x 20 x 8 in) |
| Weight | 0.75 kg (1.7 lbs) |
| Series Available | Series A, B, and C |