Allen-Bradley 1746-A13

That’s a classic! The Allen-Bradley 1746-A13 is the heavy hitter of the SLC 500 family. Since it’s a 13-slot chassis, it’s usually found in larger, more complex setups where they need a lot of I/O density.

Here is the quick breakdown of what you’re looking at:

🛠️ Technical Specifications

• Slots: 13 slots for I/O, Communication, or Specialty modules.

• Backplane Current: 10A at 5.1V DC and 2.88A at 24V DC (Max).

• Mounting: 8 mounting tabs for secure panel mounting.

• Dimensions: Approximately 50.2 x 17.1 x 14.5 cm (roughly 20 inches wide).

• Power Supply: Requires a dedicated SLC 500 power supply (like the 1746-P1, P2, P3, or P4) mounted on the leftmost side.

📈 Market & Availability Insight

• Status: This series is officially discontinued by Rockwell Automation, so the market is almost entirely surplus and refurbished.

• Local Edge: You’re in a great spot—suppliers right in Bhavnagar (like Aeliya Marine and IK Automation) often have these in stock because they are common in marine and older industrial systems.